[Swift] Fix verifier accepting truncated scalar vectors (OOB read/write, RCE) (#9081)

* Migrating from Xctests to swift testing

This migrates to the new Swift testing framework,
which would allow us to always use the latest tech
from swift moving forward.

* Updates flag to make sure that Wasm testing works

.github/workflows/build.yml

@@ -319,7 +319,7 @@ jobs:
        distribution: temurin
        java-version: 17
    - name: set up Gradle
-     uses: gradle/actions/setup-gradle@v6
+     uses: gradle/actions/setup-gradle@v5
    - name: set up flatc
      run: |
        cmake -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF -DFLATBUFFERS_STRICT_MODE=ON .
@@ -399,7 +399,7 @@ jobs:
         distribution: temurin
         java-version: 17
     - name: set up Gradle
-      uses: gradle/actions/setup-gradle@v6
+      uses: gradle/actions/setup-gradle@v5
     - name: Build flatc
       run: |
        cmake -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF .
@@ -422,7 +422,7 @@ jobs:
         distribution: temurin
         java-version: 17
     - name: set up Gradle
-      uses: gradle/actions/setup-gradle@v6
+      uses: gradle/actions/setup-gradle@v5
     - name: Build flatc
       run: |
        cmake -DFLATBUFFERS_BUILD_TESTS=OFF -DFLATBUFFERS_BUILD_FLATLIB=OFF -DFLATBUFFERS_BUILD_FLATHASH=OFF .
@@ -495,7 +495,7 @@ jobs:
     name: Test Swift Linux
     strategy:
       matrix:
-        swift: ["5.10", "6.1", "6.2"]
+        swift: ["6.0", "6.1", "6.2"]
     runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v6
@@ -534,7 +534,7 @@ jobs:
          run: |
            swift sdk list
            swift build --build-tests --swift-sdk swift-6.2.1-RELEASE_wasm
-           wasmtime --dir . .build/wasm32-unknown-wasip1/debug/FlatBuffers.Test.Swift.WasmPackageTests.xctest
+           wasmtime --dir . .build/wasm32-unknown-wasip1/debug/FlatBuffers.Test.Swift.WasmPackageTests.xctest --testing-library swift-testing
 
   build-ts:
     name: Build TS

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.10
+// swift-tools-version:6.0
 /*
  * Copyright 2020 Google Inc. All rights reserved.
  *
@@ -36,14 +36,17 @@ let package = Package(
     .target(
       name: "FlatBuffers",
       dependencies: ["Common"],
-      path: "swift/Sources/FlatBuffers"),
+      path: "swift/Sources/FlatBuffers",
+      swiftSettings: .settings),
     .target(
       name: "FlexBuffers",
       dependencies: ["Common"],
-      path: "swift/Sources/FlexBuffers"),
+      path: "swift/Sources/FlexBuffers",
+      swiftSettings: .settings),
     .target(
       name: "Common",
-      path: "swift/Sources/Common"),
+      path: "swift/Sources/Common",
+      swiftSettings: .settings),
     .testTarget(
       name: "FlatbuffersTests",
       dependencies: .dependencies,
@@ -52,7 +55,14 @@ let package = Package(
       name: "FlexbuffersTests",
       dependencies: ["FlexBuffers"],
       path: "tests/swift/Tests/Flexbuffers"),
-  ])
+  ],
+  swiftLanguageModes: [.v6])
+
+extension Array where Element == SwiftSetting {
+  static var settings: [SwiftSetting] {
+    [.enableUpcomingFeature("ExistentialAny")]
+  }
+}
 
 extension Array where Element == Package.Dependency {
   static var dependencies: [Package.Dependency] {
@@ -60,7 +70,12 @@ extension Array where Element == Package.Dependency {
     []
     #else
     // Test only Dependency
-    [.package(url: "https://github.com/grpc/grpc-swift.git", from: "1.4.1")]
+    [
+      .package(url: "https://github.com/grpc/grpc-swift-2.git", from: "2.0.0"),
+      .package(
+        url: "https://github.com/grpc/grpc-swift-nio-transport.git",
+        from: "2.0.0"),
+    ]
     #endif
   }
 }
@@ -72,7 +87,10 @@ extension Array where Element == PackageDescription.Target.Dependency {
     #else
     // Test only Dependency
     [
-      .product(name: "GRPC", package: "grpc-swift"),
+      .product(name: "GRPCCore", package: "grpc-swift-2"),
+      .product(
+        name: "GRPCNIOTransportHTTP2",
+        package: "grpc-swift-nio-transport"),
       "FlatBuffers",
     ]
     #endif

docs/source/languages/cpp.md

@@ -57,7 +57,7 @@ a `char *` array, which you pass to `GetMonster()`.
 
 ```cpp
     #include "flatbuffers/flatbuffers.h"
-    #include "monster_test_generate.h"
+    #include "monster_test_generated.h"
     #include <iostream> // C++ header file for printing
     #include <fstream> // C++ header file for file access
 

docs/source/languages/rust.md

@@ -97,6 +97,61 @@ convenient accessors for all fields, e.g. `hp()`, `mana()`, etc:
 
 *Note: That we never stored a `mana` value, so it will return the default.*
 
+## Fallible API and Custom Allocators
+
+Every `FlatBufferBuilder` method that may allocate has a `try_*` counterpart
+(e.g. `try_create_string`, `try_push`, `try_finish`) that returns
+`Result<T, A::Error>` instead of panicking. This is useful when allocation
+failures must be handled gracefully: for example in `no_std` environments or
+with fixed-capacity buffers.
+
+The existing panicking methods are unchanged and remain the simplest option
+when using the default allocator.
+
+#### Custom allocators
+
+Implement the `Allocator` trait and pass it to `FlatBufferBuilder::new_in()`:
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.rs}
+    use flatbuffers::{Allocator, FlatBufferBuilder};
+
+    struct MyAllocator { /* ... */ }
+
+    unsafe impl Allocator for MyAllocator {
+        type Error = MyError;
+        fn grow_downwards(&mut self) -> Result<(), Self::Error> { /* ... */ }
+        fn len(&self) -> usize { /* ... */ }
+    }
+
+    let alloc = MyAllocator::new(/* ... */);
+    let mut builder = FlatBufferBuilder::new_in(alloc);
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The built-in `DefaultAllocator` uses `Vec<u8>` and sets `Error = Infallible`,
+so the `try_*` methods on a default builder can never fail.
+
+#### Example: building a buffer with error propagation
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.rs}
+    fn build<A: flatbuffers::Allocator>(
+        builder: &mut FlatBufferBuilder<A>,
+    ) -> Result<(), A::Error> {
+        let name = builder.try_create_string("Orc")?;
+        let inventory = builder.try_create_vector(&[0u8, 1, 2, 3, 4])?;
+
+        let table_start = builder.start_table();
+        builder.try_push_slot_always(Monster::VT_NAME, name)?;
+        builder.try_push_slot_always(Monster::VT_INVENTORY, inventory)?;
+        builder.try_push_slot(Monster::VT_HP, 80i16, 100)?;
+        let root = builder.try_end_table(table_start)?;
+
+        builder.try_finish(root, None)?;
+        Ok(())
+    }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+See the `FlatBufferBuilder` rustdoc for the full list of `try_*` methods.
+
 ## Direct memory access
 
 As you can see from the above examples, all elements in a buffer are

grpc/examples/greeter_v2.fbs

@@ -0,0 +1,16 @@
+namespace models;
+
+table HelloResponse {
+  message:string;
+}
+
+table HelloRequest {
+  name:string;
+}
+
+rpc_service Greeter {
+  Get(HelloRequest):HelloResponse;
+  Collect(HelloRequest):HelloResponse (streaming: "client");
+  Expand(HelloRequest):HelloResponse (streaming: "server");
+  Update(HelloRequest):HelloResponse (streaming: "bidi");
+}

grpc/examples/swift/Greeter/Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.10
+// swift-tools-version:6.2
 /*
  * Copyright 2020 Google Inc. All rights reserved.
  *
@@ -20,39 +20,43 @@ import PackageDescription
 let package = Package(
   name: "Greeter",
   platforms: [
-    .iOS(.v12),
+    .iOS(.v18),
-    .macOS(.v10_14),
+    .macOS(.v15),
   ],
   dependencies: [
-    .package(path: "../../../../swift"),
+    .package(path: "../../../.."),
-    .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.0.0"),
+    .package(url: "https://github.com/grpc/grpc-swift-2.git", from: "2.0.0"),
+    .package(
+      url: "https://github.com/grpc/grpc-swift-nio-transport.git",
+      from: "2.0.0"),
+    .package(
+      url: "https://github.com/apple/swift-argument-parser.git",
+      from: "1.5.0"),
   ],
   targets: [
     // Targets are the basic building blocks of a package. A target can define a module or a test suite.
     // Targets can depend on other targets in this package, and on products in packages which this package depends on.
     .target(
-      name: "Model",
+      name: "Models",
       dependencies: [
-        "GRPC",
+        .product(name: "FlatBuffers", package: "flatbuffers"),
-        "FlatBuffers",
+        .product(name: "GRPCCore", package: "grpc-swift-2"),
-      ],
+        .product(
-      path: "Sources/Model"),
+          name: "GRPCNIOTransportHTTP2",
+          package: "grpc-swift-nio-transport"),
+      ]),
 
     // Client for the Greeter example
-    .target(
+    .executableTarget(
-      name: "Client",
+      name: "Commands",
       dependencies: [
-        "GRPC",
+        .product(name: "GRPCCore", package: "grpc-swift-2"),
-        "Model",
+        .product(
-      ],
+          name: "GRPCNIOTransportHTTP2",
-      path: "Sources/client"),
+          package: "grpc-swift-nio-transport"),
-
+        .product(
-    // Server for the Greeter example
+          name: "ArgumentParser",
-    .target(
+          package: "swift-argument-parser"),
-      name: "Server",
+        "Models",
-      dependencies: [
+      ]),
-        "GRPC",
-        "Model",
-      ],
-      path: "Sources/server"),
   ])

grpc/examples/swift/Greeter/Sources/Commands/Commands.swift

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import ArgumentParser
+
+let port = 3000
+
+@main
+struct GreeterCommand: AsyncParsableCommand {
+  static let configuration = CommandConfiguration(
+    commandName: "greeter",
+    abstract: "A multi-tool to run an echo server and execute RPCs against it.",
+    subcommands: [ServerCommand.self, ClientCommand.self])
+}
+

grpc/examples/swift/Greeter/Sources/Commands/Services/GreeterService.swift

@@ -0,0 +1,121 @@
+/*
+ * Copyright 2024 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import FlatBuffers
+import GRPCCore
+import Models
+
+struct GreeterService: models_Greeter.SimpleServiceProtocol {
+  func Get(
+    request: GRPCMessage<models_HelloResponse>,
+    context: GRPCCore
+      .ServerContext) async throws -> GRPCMessage<models_HelloResponse>
+  {
+    let model = try request.decode()
+    print("## GreeterService.Get: \(model.message)")
+
+    var builder = FlatBufferBuilder(initialSize: 128)
+    let off = builder.create(string: "Hello \(model.message ?? "Unknown")")
+    let root = models_HelloResponse.createHelloResponse(
+      &builder,
+      messageOffset: off)
+    builder.finish(offset: root)
+    return try GRPCMessage<models_HelloResponse>(builder: &builder)
+  }
+
+  func Collect(
+    request: GRPCCore.RPCAsyncSequence<
+      GRPCMessage<models_HelloResponse>,
+      any Swift.Error
+    >,
+    context: GRPCCore
+      .ServerContext) async throws -> GRPCMessage<models_HelloResponse>
+  {
+    let messages: [String] = try await request
+      .reduce(into: []) { array, message in
+        let model = try message.decode()
+        return array.append(model.message ?? "Unknown")
+      }
+
+    let joined = messages.joined(separator: ", ")
+    print("## GreeterService.Collect: \(joined)")
+
+    var builder = FlatBufferBuilder(initialSize: 128)
+    let off = builder.create(string: "Hello \(joined)")
+    let root = models_HelloResponse.createHelloResponse(
+      &builder,
+      messageOffset: off)
+    builder.finish(offset: root)
+    return try GRPCMessage<models_HelloResponse>(builder: &builder)
+  }
+
+  func Expand(
+    request: GRPCMessage<models_HelloResponse>,
+    response: GRPCCore.RPCWriter<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext) async throws
+  {
+
+    let model = try request.decode()
+    print("## GreeterService.Expand: \(model.message)")
+
+    let message = model.message ?? "Unknown"
+    let stream = AsyncThrowingStream<
+      GRPCMessage<models_HelloResponse>,
+      Error
+    > { continuation in
+      var builder = FlatBufferBuilder(initialSize: 128)
+      for char in message {
+        let off = builder.create(string: "\(char)")
+        let root = models_HelloResponse.createHelloResponse(
+          &builder,
+          messageOffset: off)
+        builder.finish(offset: root)
+
+        do {
+          continuation
+            .yield(try GRPCMessage<models_HelloResponse>(builder: &builder))
+        } catch {
+          continuation.finish(throwing: error)
+        }
+      }
+
+      continuation.finish()
+    }
+    try await response.write(contentsOf: stream)
+  }
+
+  func Update(
+    request: GRPCCore.RPCAsyncSequence<
+      GRPCMessage<models_HelloResponse>,
+      any Swift.Error
+    >,
+    response: GRPCCore.RPCWriter<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext) async throws
+  {
+    for try await message in request {
+      let model = try message.decode()
+      print("## GreeterService.Update: \(model.message)")
+      var builder = FlatBufferBuilder(initialSize: 128)
+      let off = builder.create(string: "Hello \(model.message ?? "Unknown")")
+      let root = models_HelloResponse.createHelloResponse(
+        &builder,
+        messageOffset: off)
+      builder.finish(offset: root)
+      try await response
+        .write(try GRPCMessage<models_HelloResponse>(builder: &builder))
+    }
+  }
+}

grpc/examples/swift/Greeter/Sources/Commands/Subcommands/ClientCommand.swift

@@ -0,0 +1,140 @@
+/*
+ * Copyright 2024 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import ArgumentParser
+import FlatBuffers
+import GRPCCore
+import GRPCNIOTransportHTTP2
+import Models
+
+enum ClientRequest: String, ExpressibleByArgument {
+  case get, expand, collect, update
+}
+
+struct ClientCommand: AsyncParsableCommand {
+  static let configuration = CommandConfiguration(
+    commandName: "client")
+
+  @Option(help: "Name to send to the server")
+  var name: String
+
+  @Option(help: "request type")
+  var request: ClientRequest
+
+  func run() async throws {
+    try await withGRPCClient(
+      transport: .http2NIOPosix(
+        target: .dns(host: "localhost", port: port),
+        transportSecurity: .plaintext))
+    {
+      let client = models_Greeter.Client(wrapping: $0)
+
+      switch request {
+      case .get: try await get(client: client)
+      case .expand: try await expand(client: client)
+      case .collect: try await collect(client: client)
+      case .update: try await update(client: client)
+      }
+    }
+  }
+
+  func get(
+    client: models_Greeter
+      .Client<HTTP2ClientTransport.Posix>) async throws
+  {
+    for _ in 0..<3 {
+      var builder = FlatBufferBuilder(initialSize: 64)
+      let off = builder.create(string: name)
+      let root = models_HelloRequest.createHelloRequest(
+        &builder,
+        nameOffset: off)
+      builder.finish(offset: root)
+
+      let response = try await client
+        .Get(GRPCMessage(builder: &builder))
+      let message = try? response.decode().message
+      print("get message: \(message ?? "nil")")
+    }
+  }
+
+  func expand(
+    client: models_Greeter
+      .Client<HTTP2ClientTransport.Posix>) async throws
+  {
+    for _ in 0..<3 {
+      var builder = FlatBufferBuilder(initialSize: 64)
+      let off = builder.create(string: name)
+      let root = models_HelloRequest.createHelloRequest(
+        &builder,
+        nameOffset: off)
+      builder.finish(offset: root)
+      try await client.Expand(GRPCMessage(builder: &builder)) { response in
+        for try await message in response.messages {
+          let message = try? message.decode().message
+          print("expand message: \(message ?? "nil")")
+        }
+      }
+    }
+  }
+
+  func collect(
+    client: models_Greeter
+      .Client<HTTP2ClientTransport.Posix>) async throws
+  {
+    for _ in 0..<3 {
+      let response = try await client.Collect { writer in
+        for part in name {
+          print("collect sending: \(part)")
+          var builder = FlatBufferBuilder(initialSize: 64)
+          let off = builder.create(string: String(part))
+          let root = models_HelloRequest.createHelloRequest(
+            &builder,
+            nameOffset: off)
+          builder.finish(offset: root)
+          try await writer.write(GRPCMessage(builder: &builder))
+        }
+      }
+
+      let message = try response.decode().message
+      print("collect message: \(message ?? "nil")")
+    }
+  }
+
+  func update(
+    client: models_Greeter
+      .Client<HTTP2ClientTransport.Posix>) async throws
+  {
+    for _ in 0..<3 {
+      try await client.Update { writer in
+        for part in name {
+          print("update sending: \(part)")
+          var builder = FlatBufferBuilder(initialSize: 64)
+          let off = builder.create(string: String(part))
+          let root = models_HelloRequest.createHelloRequest(
+            &builder,
+            nameOffset: off)
+          builder.finish(offset: root)
+          try await writer.write(GRPCMessage(builder: &builder))
+        }
+      } onResponse: { response in
+        for try await message in response.messages {
+          let message = try message.decode().message
+          print("collect message: \(message ?? "nil")")
+        }
+      }
+    }
+  }
+}

grpc/examples/swift/Greeter/Sources/Commands/Subcommands/ServerCommand.swift

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2024 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import ArgumentParser
+import GRPCCore
+import GRPCNIOTransportHTTP2
+
+struct ServerCommand: AsyncParsableCommand {
+  static let configuration = CommandConfiguration(
+    commandName: "serve")
+
+  func run() async throws {
+    let server = GRPCServer(
+      transport: .http2NIOPosix(
+        address: .ipv4(host: "127.0.0.1", port: port),
+        transportSecurity: .plaintext),
+      services: [GreeterService()])
+
+    try await withThrowingDiscardingTaskGroup { group in
+      group.addTask { try await server.serve() }
+      if let address = try await server.listeningAddress {
+        print("Echo listening on \(address)")
+      }
+    }
+  }
+}

grpc/examples/swift/Greeter/Sources/Model/greeter.grpc.swift

@@ -1,147 +0,0 @@
-// Generated GRPC code for FlatBuffers swift!
-/// The following code is generated by the Flatbuffers library which might not be in sync with grpc-swift
-/// in case of an issue please open github issue, though it would be maintained
-
-// swiftlint:disable all
-// swiftformat:disable all
-
-#if !os(Windows)
-import Foundation
-import GRPC
-import NIO
-import NIOHTTP1
-import FlatBuffers
-
-public protocol GRPCFlatBufPayload: GRPCPayload, FlatBufferGRPCMessage {}
-public extension GRPCFlatBufPayload {
-  init(serializedByteBuffer: inout NIO.ByteBuffer) throws {
-    self.init(byteBuffer: FlatBuffers.ByteBuffer(contiguousBytes: serializedByteBuffer.readableBytesView, count: serializedByteBuffer.readableBytes))
-  }
-  func serialize(into buffer: inout NIO.ByteBuffer) throws {
-    withUnsafeReadableBytes { buffer.writeBytes($0) }
-  }
-}
-extension Message: GRPCFlatBufPayload {}
-
-/// Usage: instantiate models_GreeterServiceClient, then call methods of this protocol to make API calls.
-public protocol models_GreeterClientProtocol: GRPCClient {
-
-  var serviceName: String { get }
-
-  var interceptors: models_GreeterClientInterceptorFactoryProtocol? { get }
-
-  func SayHello(
-    _ request: Message<models_HelloRequest>
-    , callOptions: CallOptions?
-  ) -> UnaryCall<Message<models_HelloRequest>, Message<models_HelloReply>>
-
-  func SayManyHellos(
-    _ request: Message<models_HelloRequest>
-    , callOptions: CallOptions?,
-    handler: @escaping (Message<models_HelloReply>) -> Void
-  ) -> ServerStreamingCall<Message<models_HelloRequest>, Message<models_HelloReply>>
-
-}
-
-extension models_GreeterClientProtocol {
-
-  public var serviceName: String { "models.Greeter" }
-
-  public func SayHello(
-    _ request: Message<models_HelloRequest>
-    , callOptions: CallOptions? = nil
-  ) -> UnaryCall<Message<models_HelloRequest>, Message<models_HelloReply>> {
-    return self.makeUnaryCall(
-      path: "/models.Greeter/SayHello",
-      request: request,
-      callOptions: callOptions ?? self.defaultCallOptions,
-      interceptors: self.interceptors?.makeSayHelloInterceptors() ?? []
-    )
-  }
-
-  public func SayManyHellos(
-    _ request: Message<models_HelloRequest>
-    , callOptions: CallOptions? = nil,
-    handler: @escaping (Message<models_HelloReply>) -> Void
-  ) -> ServerStreamingCall<Message<models_HelloRequest>, Message<models_HelloReply>> {
-    return self.makeServerStreamingCall(
-      path: "/models.Greeter/SayManyHellos",
-      request: request,
-      callOptions: callOptions ?? self.defaultCallOptions,
-      interceptors: self.interceptors?.makeSayManyHellosInterceptors() ?? [],
-      handler: handler
-    )
-  }
-}
-
-public protocol models_GreeterClientInterceptorFactoryProtocol {
-  /// - Returns: Interceptors to use when invoking 'SayHello'.
-  func makeSayHelloInterceptors() -> [ClientInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
-
-  /// - Returns: Interceptors to use when invoking 'SayManyHellos'.
-  func makeSayManyHellosInterceptors() -> [ClientInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
-
-}
-
-public final class models_GreeterServiceClient: models_GreeterClientProtocol {
-  public let channel: GRPCChannel
-  public var defaultCallOptions: CallOptions
-  public var interceptors: models_GreeterClientInterceptorFactoryProtocol?
-
-  public init(
-    channel: GRPCChannel,
-    defaultCallOptions: CallOptions = CallOptions(),
-    interceptors: models_GreeterClientInterceptorFactoryProtocol? = nil
-  ) {
-    self.channel = channel
-    self.defaultCallOptions = defaultCallOptions
-    self.interceptors = interceptors
-  }
-}
-
-public protocol models_GreeterProvider: CallHandlerProvider {
-  var interceptors: models_GreeterServerInterceptorFactoryProtocol? { get }
-  func SayHello(request: Message<models_HelloRequest>, context: StatusOnlyCallContext) -> EventLoopFuture<Message<models_HelloReply>>
-  func SayManyHellos(request: Message<models_HelloRequest>, context: StreamingResponseCallContext<Message<models_HelloReply>>) -> EventLoopFuture<GRPCStatus>
-}
-
-public extension models_GreeterProvider {
-
-  var serviceName: Substring { return "models.Greeter" }
-
-  func handle(method name: Substring, context: CallHandlerContext) -> GRPCServerHandlerProtocol? {
-    switch name {
-    case "SayHello":
-    return UnaryServerHandler(
-      context: context,
-      requestDeserializer: GRPCPayloadDeserializer<Message<models_HelloRequest>>(),
-      responseSerializer: GRPCPayloadSerializer<Message<models_HelloReply>>(),
-      interceptors: self.interceptors?.makeSayHelloInterceptors() ?? [],
-      userFunction: self.SayHello(request:context:))
-
-    case "SayManyHellos":
-    return ServerStreamingServerHandler(
-      context: context,
-      requestDeserializer: GRPCPayloadDeserializer<Message<models_HelloRequest>>(),
-      responseSerializer: GRPCPayloadSerializer<Message<models_HelloReply>>(),
-      interceptors: self.interceptors?.makeSayManyHellosInterceptors() ?? [],
-      userFunction: self.SayManyHellos(request:context:))
-
-    default: return nil;
-    }
-  }
-
-}
-
-public protocol models_GreeterServerInterceptorFactoryProtocol {
-  /// - Returns: Interceptors to use when handling 'SayHello'.
-  ///   Defaults to calling `self.makeInterceptors()`.
-  func makeSayHelloInterceptors() -> [ServerInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
-
-  /// - Returns: Interceptors to use when handling 'SayManyHellos'.
-  ///   Defaults to calling `self.makeInterceptors()`.
-  func makeSayManyHellosInterceptors() -> [ServerInterceptor<Message<models_HelloRequest>, Message<models_HelloReply>>]
-
-}
-#endif
-

grpc/examples/swift/Greeter/Sources/Models/greeter_v2.grpc.swift

@@ -0,0 +1,572 @@
+// Generated GRPC code for FlatBuffers swift!
+/// The following code is generated by the Flatbuffers library which might not be in sync with grpc-swift
+/// in case of an issue please open github issue, though it would be maintained
+
+// swiftlint:disable all
+// swiftformat:disable all
+
+#if !os(Windows) && compiler(>=6.0)
+import FlatBuffers
+import Foundation
+import GRPCCore
+import GRPCNIOTransportCore
+
+
+/// Usage: instantiate models.GreeterServiceClient, then call methods of this protocol to make API calls.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension FlatBuffersMessageSerializer: MessageSerializer {
+  public func serialize<Bytes>(_ message: Message) throws -> Bytes where Bytes : GRPCCore.GRPCContiguousBytes {
+    do {
+      return try self.serialize(message: message) { GRPCNIOTransportBytes($0) } as! Bytes
+    } catch let error {
+      throw RPCError(
+        code: .invalidArgument,
+        message: "Can't serialize message",
+        cause: error
+      )
+    }
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension FlatBuffersMessageDeserializer: MessageDeserializer {
+  public func deserialize<Bytes>(_ serializedMessageBytes: Bytes) throws -> Message where Bytes : GRPCCore.GRPCContiguousBytes {
+    do {
+      return try serializedMessageBytes.withUnsafeBytes {
+        try self.deserialize(pointer: $0)
+      }
+    } catch let error {
+      throw RPCError(
+        code: .invalidArgument,
+        message: "Can't Decode message of type \(Message.self)",
+        cause: error
+      )
+    }
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+public enum models_Greeter: Sendable {
+  public static let descriptor = GRPCCore.ServiceDescriptor(fullyQualifiedService: "models.Greeter")
+  public enum Method: Sendable {
+    public enum Get: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = models_HelloResponse
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "models.Greeter"),
+        method: "Get"
+      )
+    }
+    public enum Collect: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = models_HelloResponse
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "models.Greeter"),
+        method: "Collect"
+      )
+    }
+    public enum Expand: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = models_HelloResponse
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "models.Greeter"),
+        method: "Expand"
+      )
+    }
+    public enum Update: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = models_HelloResponse
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "models.Greeter"),
+        method: "Update"
+      )
+    }
+    public static let descriptors: [GRPCCore.MethodDescriptor] = [
+      Get.descriptor,
+      Collect.descriptor,
+      Expand.descriptor,
+      Update.descriptor,
+    ]
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension GRPCCore.ServiceDescriptor {
+  public static let models_Greeter = GRPCCore.ServiceDescriptor(fullyQualifiedService: "models.Greeter")
+}
+
+// MARK: models.Greeter Server
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter {
+  public protocol StreamingServiceProtocol: GRPCCore.RegistrableRPCService {
+    func Get(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>
+    
+    func Collect(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>
+    
+    func Expand(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>
+    
+    func Update(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>
+    
+  }
+  
+  public protocol ServiceProtocol: models_Greeter.StreamingServiceProtocol {
+    func Get(
+      request: GRPCCore.ServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.ServerResponse<GRPCMessage<models_HelloResponse>>
+    
+    func Collect(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.ServerResponse<GRPCMessage<models_HelloResponse>>
+    
+    func Expand(
+      request: GRPCCore.ServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>
+    
+    func Update(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>
+    
+  }
+  
+  public protocol SimpleServiceProtocol: models_Greeter.ServiceProtocol {
+    func Get(
+      request: GRPCMessage<models_HelloResponse>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCMessage<models_HelloResponse>
+    
+    func Collect(
+      request: GRPCCore.RPCAsyncSequence<GRPCMessage<models_HelloResponse>, any Swift.Error>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCMessage<models_HelloResponse>
+    
+    func Expand(
+      request: GRPCMessage<models_HelloResponse>,
+      response: GRPCCore.RPCWriter<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws
+    
+    func Update(
+      request: GRPCCore.RPCAsyncSequence<GRPCMessage<models_HelloResponse>, any Swift.Error>,
+      response: GRPCCore.RPCWriter<GRPCMessage<models_HelloResponse>>,
+      context: GRPCCore.ServerContext
+    ) async throws
+    
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter.StreamingServiceProtocol {
+  public func registerMethods<Transport>(with router: inout GRPCCore.RPCRouter<Transport>) where Transport: GRPCCore.ServerTransport {
+    router.registerHandler(
+      forMethod: models_Greeter.Method.Get.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      handler: { request, context in
+        try await self.Get(
+          request: request,
+          context: context
+        )
+      }
+    )
+    router.registerHandler(
+      forMethod: models_Greeter.Method.Collect.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      handler: { request, context in
+        try await self.Collect(
+          request: request,
+          context: context
+        )
+      }
+    )
+    router.registerHandler(
+      forMethod: models_Greeter.Method.Expand.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      handler: { request, context in
+        try await self.Expand(
+          request: request,
+          context: context
+        )
+      }
+    )
+    router.registerHandler(
+      forMethod: models_Greeter.Method.Update.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      handler: { request, context in
+        try await self.Update(
+          request: request,
+          context: context
+        )
+      }
+    )
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter.ServiceProtocol {
+  public func Get(
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>> {
+    let response = try await self.Get(
+      request: GRPCCore.ServerRequest(stream: request),
+      context: context
+    )
+    return GRPCCore.StreamingServerResponse(single: response)
+  }
+  public func Collect(
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>> {
+    let response = try await self.Collect(
+      request: request,
+      context: context
+    )
+    return GRPCCore.StreamingServerResponse(single: response)
+  }
+  public func Expand(
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>> {
+    let response = try await self.Expand(
+      request: GRPCCore.ServerRequest(stream: request),
+      context: context
+    )
+    return response
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter.SimpleServiceProtocol {
+  public func Get(
+    request: GRPCCore.ServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.ServerResponse<GRPCMessage<models_HelloResponse>> {
+    return GRPCCore.ServerResponse<GRPCMessage<models_HelloResponse>>(
+      message: try await self.Get(
+        request: request.message,
+        context: context
+      ),
+      metadata: [:]
+    )
+  }
+  public func Collect(
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.ServerResponse<GRPCMessage<models_HelloResponse>> {
+    return GRPCCore.ServerResponse<GRPCMessage<models_HelloResponse>>(
+      message: try await self.Collect(
+        request: request.messages,
+        context: context
+      ),
+      metadata: [:]
+    )
+  }
+  public func Expand(
+    request: GRPCCore.ServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>> {
+    return GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>(
+      metadata: [:],
+      producer: { writer in
+        try await self.Expand(
+          request: request.message,
+          response: writer,
+          context: context
+        )
+        return [:]
+      }
+    )
+  }
+  public func Update(
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<models_HelloResponse>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>> {
+    return GRPCCore.StreamingServerResponse<GRPCMessage<models_HelloResponse>>(
+      metadata: [:],
+      producer: { writer in
+        try await self.Update(
+          request: request.messages,
+          response: writer,
+          context: context
+        )
+        return [:]
+      }
+    )
+  }
+}
+
+
+// MARK: models.Greeter Client
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter {
+  public protocol ClientProtocol: Sendable {
+    func Get<Result>(
+      request: GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
+    
+    func Collect<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
+    
+    func Expand<Result>(
+      request: GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
+    
+    func Update<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
+    
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter {
+  public struct Client<Transport>: ClientProtocol where Transport: GRPCCore.ClientTransport {
+    private let client: GRPCCore.GRPCClient<Transport>
+    
+    public init(wrapping client: GRPCCore.GRPCClient<Transport>) {
+      self.client = client
+    }
+    
+    public func Get<Result>(
+      request: GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result = { response in try response.message }
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.unary(
+        request: request,
+        descriptor: models_Greeter.Method.Get.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+    public func Collect<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result = { response in try response.message }
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.clientStreaming(
+        request: request,
+        descriptor: models_Greeter.Method.Collect.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+    public func Expand<Result>(
+      request: GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.serverStreaming(
+        request: request,
+        descriptor: models_Greeter.Method.Expand.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+    public func Update<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<models_HelloResponse>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<models_HelloResponse>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.bidirectionalStreaming(
+        request: request,
+        descriptor: models_Greeter.Method.Update.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter.ClientProtocol {
+  public func Get<Result>(
+    request: GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result = { response in try response.message }
+  ) async throws -> Result where Result: Sendable {
+    try await self.Get(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Collect<Result>(
+    request: GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result = { response in try response.message }
+  ) async throws -> Result where Result: Sendable {
+    try await self.Collect(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Expand<Result>(
+    request: GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    try await self.Expand(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Update<Result>(
+    request: GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    try await self.Update(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<models_HelloResponse>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<models_HelloResponse>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension models_Greeter.ClientProtocol {
+  public func Get<Result>(
+    _ message: GRPCMessage<models_HelloResponse>,
+    metadata: GRPCCore.Metadata = [:],
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result = { try $0.message }
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>(
+      message: message,
+      metadata: metadata
+    )
+    return try await self.Get(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Collect<Result>(
+    metadata: GRPCCore.Metadata = [:],
+    options: GRPCCore.CallOptions = .defaults,
+    requestProducer producer: @Sendable @escaping (GRPCCore.RPCWriter<GRPCMessage<models_HelloResponse>>) async throws -> Void,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result = { try $0.message }
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>(
+      metadata: metadata,
+      producer: producer
+    )
+    return try await self.Collect(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Expand<Result>(
+    _ message: GRPCMessage<models_HelloResponse>,
+    metadata: GRPCCore.Metadata = [:],
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.ClientRequest<GRPCMessage<models_HelloResponse>>(
+      message: message,
+      metadata: metadata
+    )
+    return try await self.Expand(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Update<Result>(
+    metadata: GRPCCore.Metadata = [:],
+    options: GRPCCore.CallOptions = .defaults,
+    requestProducer producer: @Sendable @escaping (GRPCCore.RPCWriter<GRPCMessage<models_HelloResponse>>) async throws -> Void,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<models_HelloResponse>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.StreamingClientRequest<GRPCMessage<models_HelloResponse>>(
+      metadata: metadata,
+      producer: producer
+    )
+    return try await self.Update(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+}
+
+#endif
+

grpc/examples/swift/Greeter/Sources/Models/greeter_v2_generated.swift

@@ -8,7 +8,7 @@ import Common
 
 import FlatBuffers
 
-public struct models_HelloReply: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+public struct models_HelloResponse: FlatBufferVerifiableTable, FlatbuffersVectorInitializable {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -23,16 +23,16 @@ public struct models_HelloReply: FlatBufferTable, FlatbuffersVectorInitializable
 
   public var message: String? { let o = _accessor.offset(VT.message); return o == 0 ? nil : _accessor.string(at: o) }
   public var messageSegmentArray: [UInt8]? { return _accessor.getVector(at: VT.message) }
-  public static func startHelloReply(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 1) }
+  public static func startHelloResponse(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 1) }
   public static func add(message: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: message, at: VT.message) }
-  public static func endHelloReply(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); return end }
+  public static func endHelloResponse(_ fbb: inout FlatBufferBuilder, start: UOffset) -> Offset { let end = Offset(offset: fbb.endTable(at: start)); return end }
-  public static func createHelloReply(
+  public static func createHelloResponse(
     _ fbb: inout FlatBufferBuilder,
     messageOffset message: Offset = Offset()
   ) -> Offset {
-    let __start = models_HelloReply.startHelloReply(&fbb)
+    let __start = models_HelloResponse.startHelloResponse(&fbb)
-    models_HelloReply.add(message: message, &fbb)
+    models_HelloResponse.add(message: message, &fbb)
-    return models_HelloReply.endHelloReply(&fbb, start: __start)
+    return models_HelloResponse.endHelloResponse(&fbb, start: __start)
   }
 
   public static func verify<T>(_ verifier: inout Verifier, at position: Int, of type: T.Type) throws where T: Verifiable {
@@ -42,7 +42,7 @@ public struct models_HelloReply: FlatBufferTable, FlatbuffersVectorInitializable
   }
 }
 
-extension models_HelloReply: Encodable {
+extension models_HelloResponse: Encodable {
   enum CodingKeys: String, CodingKey {
     case message = "message"
   }
@@ -53,7 +53,7 @@ extension models_HelloReply: Encodable {
   }
 }
 
-public struct models_HelloRequest: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+public struct models_HelloRequest: FlatBufferVerifiableTable, FlatbuffersVectorInitializable {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

grpc/examples/swift/Greeter/Sources/client/main.swift

@@ -1,108 +0,0 @@
-/*
- * Copyright 2024 Google Inc. All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import FlatBuffers
-import GRPC
-import Logging
-import Model
-import NIO
-
-// Quieten the logs.
-LoggingSystem.bootstrap {
-  var handler = StreamLogHandler.standardOutput(label: $0)
-  handler.logLevel = .critical
-  return handler
-}
-
-func greet(name: String, client greeter: models_GreeterServiceClient) {
-  // Form the request with the name, if one was provided.
-  var builder = FlatBufferBuilder()
-  let nameOff = builder.create(string: name)
-  let root = models_HelloRequest.createHelloRequest(
-    &builder,
-    nameOffset: nameOff)
-  builder.finish(offset: root)
-
-  // Make the RPC call to the server.
-  let sayHello =
-    greeter
-      .SayHello(Message<models_HelloRequest>(builder: &builder))
-
-  // wait() on the response to stop the program from exiting before the response is received.
-  do {
-    let response = try sayHello.response.wait()
-    print("Greeter SayHello received: \(response.object.message ?? "Unknown")")
-  } catch {
-    print("Greeter failed: \(error)")
-  }
-
-  let surname = builder.create(string: name)
-  let manyRoot = models_HelloRequest.createHelloRequest(
-    &builder,
-    nameOffset: surname)
-  builder.finish(offset: manyRoot)
-
-  let call = greeter.SayManyHellos(Message(builder: &builder)) { message in
-    print(
-      "Greeter SayManyHellos received: \(message.object.message  ?? "Unknown")")
-  }
-
-  let status = try! call.status.recover { _ in .processingError }.wait()
-  if status.code != .ok {
-    print("RPC failed: \(status)")
-  }
-}
-
-func main(args: [String]) {
-  // arg0 (dropped) is the program name. We expect arg1 to be the port, and arg2 (optional) to be
-  // the name sent in the request.
-  let arg1 = args.dropFirst(1).first
-  let arg2 = args.dropFirst(2).first
-
-  switch (arg1.flatMap(Int.init), arg2) {
-  case (.none, _):
-    print("Usage: PORT [NAME]")
-    exit(1)
-
-  case (.some(let port), let name):
-    // Setup an `EventLoopGroup` for the connection to run on.
-    //
-    // See: https://github.com/apple/swift-nio#eventloops-and-eventloopgroups
-    let group = MultiThreadedEventLoopGroup(numberOfThreads: 1)
-
-    // Make sure the group is shutdown when we're done with it.
-    defer {
-      try! group.syncShutdownGracefully()
-    }
-
-    // Configure the channel, we're not using TLS so the connection is `insecure`.
-    let channel = ClientConnection.insecure(group: group)
-      .connect(host: "localhost", port: port)
-
-    // Close the connection when we're done with it.
-    defer {
-      try! channel.close().wait()
-    }
-
-    // Provide the connection to the generated client.
-    let greeter = models_GreeterServiceClient(channel: channel)
-
-    // Do the greeting.
-    greet(name: name ?? "FlatBuffers!", client: greeter)
-  }
-}
-
-main(args: CommandLine.arguments)

grpc/examples/swift/Greeter/Sources/server/main.swift

@@ -1,97 +0,0 @@
-/*
- * Copyright 2024 Google Inc. All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import FlatBuffers
-import GRPC
-import Logging
-import Model
-import NIO
-
-class Greeter: models_GreeterProvider {
-
-  var interceptors: models_GreeterServerInterceptorFactoryProtocol?
-
-  let greetings: [String]
-
-  init() {
-    greetings = ["Hi", "Hallo", "Ciao"]
-  }
-
-  func SayHello(
-    request: Message<models_HelloRequest>,
-    context: StatusOnlyCallContext)
-    -> EventLoopFuture<Message<models_HelloReply>>
-  {
-    let recipient = request.object.name ?? "Stranger"
-
-    var builder = FlatBufferBuilder()
-    let off = builder.create(string: "Hello \(recipient)")
-    let root = models_HelloReply.createHelloReply(&builder, messageOffset: off)
-    builder.finish(offset: root)
-    return context.eventLoop
-      .makeSucceededFuture(Message<models_HelloReply>(builder: &builder))
-  }
-
-  func SayManyHellos(
-    request: Message<models_HelloRequest>,
-    context: StreamingResponseCallContext<Message<models_HelloReply>>)
-    -> EventLoopFuture<GRPCStatus>
-  {
-    for name in greetings {
-      var builder = FlatBufferBuilder()
-      let off =
-        builder
-          .create(string: "\(name) \(request.object.name ?? "Unknown")")
-      let root = models_HelloReply.createHelloReply(
-        &builder,
-        messageOffset: off)
-      builder.finish(offset: root)
-      _ = context.sendResponse(Message<models_HelloReply>(builder: &builder))
-    }
-    return context.eventLoop.makeSucceededFuture(.ok)
-  }
-}
-
-// Quieten the logs.
-LoggingSystem.bootstrap {
-  var handler = StreamLogHandler.standardOutput(label: $0)
-  handler.logLevel = .critical
-  return handler
-}
-
-let group = MultiThreadedEventLoopGroup(numberOfThreads: 1)
-defer {
-  try! group.syncShutdownGracefully()
-}
-
-// Create some configuration for the server:
-let configuration = Server.Configuration(
-  target: .hostAndPort("localhost", 0),
-  eventLoopGroup: group,
-  serviceProviders: [Greeter()])
-
-// Start the server and print its address once it has started.
-let server = Server.start(configuration: configuration)
-server.map {
-  $0.channel.localAddress
-}.whenSuccess { address in
-  print("server started on port \(address!.port!)")
-}
-
-// Wait on the server's `onClose` future to stop the program from exiting.
-_ = try server.flatMap {
-  $0.onClose
-}.wait()

grpc/src/compiler/python_generator.cc

@@ -172,6 +172,7 @@ class StubGenerator : public BaseGenerator {
        << "  def __init__(self, channel: grpc.Channel) -> None: ...\n";
 
     for (const RPCCall* method : service->calls.vec) {
+      imports->Import("typing");
       std::string request = "bytes";
       std::string response = "bytes";
 
@@ -183,13 +184,21 @@ class StubGenerator : public BaseGenerator {
         imports->Import(ModuleFor(method->response), response);
       }
 
-      ss << "  def " << method->name << "(self, ";
+      ss << "  def " << method->name << "(\n";
+      ss << "      self,\n";
       if (ClientStreaming(method)) {
-        imports->Import("typing");
+        ss << "      request_iterator: typing.Iterator[" << request << "]\n";
-        ss << "request_iterator: typing.Iterator[" << request << "]";
       } else {
-        ss << "request: " << request;
+        ss << "      request: " << request << ",\n";
       }
+
+      ss << "      timeout: float | None = None,\n";
+      // https://github.com/python/typeshed/blob/ccf9411fb1f5bee2a8e3d278889de17a08f7bbe3/stubs/grpcio/grpc/__init__.pyi#L37
+      ss << "      metadata: typing.Sequence[tuple[str, typing.Union[str, bytes]]] | None = None,\n";
+      ss << "      credentials: grpc.CallCredentials | None = None,\n";
+      ss << "      wait_for_ready: bool | None = None,\n";
+      ss << "      compression: grpc.Compression | None = None\n";
+
       ss << "  ) -> ";
       if (ServerStreaming(method)) {
         imports->Import("typing");

include/flatbuffers/flexbuffers.h

@@ -1976,7 +1976,7 @@ class Verifier FLATBUFFERS_FINAL_CLASS {
   bool VerifyKey(const uint8_t* p) {
     FLEX_CHECK_VERIFIED(p, PackedType(BIT_WIDTH_8, FBT_KEY));
     while (p < buf_ + size_)
-      if (*p++) return true;
+      if (!*p++) return true;
     return false;
   }
 

python/setup.py

@@ -12,8 +12,26 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from pathlib import Path
+import shutil
+
 from setuptools import setup
 
+
+_THIS_DIR = Path(__file__).resolve().parent
+_ROOT_LICENSE = _THIS_DIR.parent / 'LICENSE'
+_LOCAL_LICENSE = _THIS_DIR / 'LICENSE'
+
+
+def _stage_license_file():
+    if _LOCAL_LICENSE.exists() or not _ROOT_LICENSE.exists():
+        return False
+    shutil.copyfile(_ROOT_LICENSE, _LOCAL_LICENSE)
+    return True
+
+_remove_staged_license = _stage_license_file()
+
+try:
     setup(
         name='flatbuffers',
         version='25.12.19',
@@ -42,3 +60,6 @@ setup(
             'Source': 'https://github.com/google/flatbuffers',
         },
     )
+finally:
+    if _remove_staged_license and _LOCAL_LICENSE.exists():
+        _LOCAL_LICENSE.unlink()

rust/flatbuffers/src/builder.rs

@@ -337,22 +337,43 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         self.strings_pool.clear();
     }
 
-    /// Push a Push'able value onto the front of the in-progress data.
+    /// Fallible version of [`push`](Self::push).
-    ///
-    /// This function uses traits to provide a unified API for writing
-    /// scalars, tables, vectors, and WIPOffsets.
     #[inline]
-    pub fn push<P: Push>(&mut self, x: P) -> WIPOffset<P::Output> {
+    pub fn try_push<P: Push>(&mut self, x: P) -> Result<WIPOffset<P::Output>, A::Error> {
         let sz = P::size();
-        self.align(sz, P::alignment());
+        self.align(sz, P::alignment())?;
-        self.make_space(sz);
+        self.make_space(sz)?;
         {
             let (dst, rest) = self.allocator[self.head.range_to_end()].split_at_mut(sz);
             // Safety:
             // Called make_space above
             unsafe { x.push(dst, rest.len()) };
         }
-        WIPOffset::new(self.used_space() as UOffsetT)
+        Ok(WIPOffset::new(self.used_space() as UOffsetT))
+    }
+
+    /// Push a Push'able value onto the front of the in-progress data.
+    ///
+    /// This function uses traits to provide a unified API for writing
+    /// scalars, tables, vectors, and WIPOffsets.
+    #[inline]
+    pub fn push<P: Push>(&mut self, x: P) -> WIPOffset<P::Output> {
+        self.try_push(x).expect("Flatbuffer allocation failure")
+    }
+
+    /// Fallible version of [`push_slot`](Self::push_slot).
+    #[inline]
+    pub fn try_push_slot<X: Push + PartialEq>(
+        &mut self,
+        slotoff: VOffsetT,
+        x: X,
+        default: X,
+    ) -> Result<(), A::Error> {
+        self.assert_nested("push_slot");
+        if x != default || self.force_defaults {
+            self.try_push_slot_always(slotoff, x)?;
+        }
+        Ok(())
     }
 
     /// Push a Push'able value onto the front of the in-progress data, and
@@ -360,19 +381,29 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     /// the default, then this is a no-op.
     #[inline]
     pub fn push_slot<X: Push + PartialEq>(&mut self, slotoff: VOffsetT, x: X, default: X) {
-        self.assert_nested("push_slot");
+        self.try_push_slot(slotoff, x, default)
-        if x != default || self.force_defaults {
+            .expect("Flatbuffer allocation failure")
-            self.push_slot_always(slotoff, x);
     }
+
+    /// Fallible version of [`push_slot_always`](Self::push_slot_always).
+    #[inline]
+    pub fn try_push_slot_always<X: Push>(
+        &mut self,
+        slotoff: VOffsetT,
+        x: X,
+    ) -> Result<(), A::Error> {
+        self.assert_nested("push_slot_always");
+        let off = self.try_push(x)?;
+        self.track_field(slotoff, off.value());
+        Ok(())
     }
 
     /// Push a Push'able value onto the front of the in-progress data, and
     /// store a reference to it in the in-progress vtable.
     #[inline]
     pub fn push_slot_always<X: Push>(&mut self, slotoff: VOffsetT, x: X) {
-        self.assert_nested("push_slot_always");
+        self.try_push_slot_always(slotoff, x)
-        let off = self.push(x);
+            .expect("Flatbuffer allocation failure")
-        self.track_field(slotoff, off.value());
     }
 
     /// Retrieve the number of vtables that have been serialized into the
@@ -397,6 +428,22 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         WIPOffset::new(self.used_space() as UOffsetT)
     }
 
+    /// Fallible version of [`end_table`](Self::end_table).
+    #[inline]
+    pub fn try_end_table(
+        &mut self,
+        off: WIPOffset<TableUnfinishedWIPOffset>,
+    ) -> Result<WIPOffset<TableFinishedWIPOffset>, A::Error> {
+        self.assert_nested("end_table");
+
+        let o = self.write_vtable(off)?;
+
+        self.nested = false;
+        self.field_locs.clear();
+
+        Ok(WIPOffset::new(o.value()))
+    }
+
     /// End a Table write.
     ///
     /// Asserts that the builder is in a nested state.
@@ -405,14 +452,19 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         &mut self,
         off: WIPOffset<TableUnfinishedWIPOffset>,
     ) -> WIPOffset<TableFinishedWIPOffset> {
-        self.assert_nested("end_table");
+        self.try_end_table(off)
+            .expect("Flatbuffer allocation failure")
+    }
 
-        let o = self.write_vtable(off);
+    /// Fallible version of [`start_vector`](Self::start_vector).
-
+    #[inline]
-        self.nested = false;
+    pub fn try_start_vector<T: Push>(&mut self, num_items: usize) -> Result<(), A::Error> {
-        self.field_locs.clear();
+        self.assert_not_nested(
-
+            "start_vector can not be called when a table or vector is under construction",
-        WIPOffset::new(o.value())
+        );
+        self.align(num_items * T::size(), T::alignment().max_of(SIZE_UOFFSET))?;
+        self.nested = true;
+        Ok(())
     }
 
     /// Start a Vector write.
@@ -424,11 +476,20 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     /// function will want to use `push` to add values.
     #[inline]
     pub fn start_vector<T: Push>(&mut self, num_items: usize) {
-        self.assert_not_nested(
+        self.try_start_vector::<T>(num_items)
-            "start_vector can not be called when a table or vector is under construction",
+            .expect("Flatbuffer allocation failure")
-        );
+    }
-        self.nested = true;
+
-        self.align(num_items * T::size(), T::alignment().max_of(SIZE_UOFFSET));
+    /// Fallible version of [`end_vector`](Self::end_vector).
+    #[inline]
+    pub fn try_end_vector<T: Push>(
+        &mut self,
+        num_elems: usize,
+    ) -> Result<WIPOffset<Vector<'fbb, T>>, A::Error> {
+        self.assert_nested("end_vector");
+        let o = self.try_push::<UOffsetT>(num_elems as UOffsetT)?;
+        self.nested = false;
+        Ok(WIPOffset::new(o.value()))
     }
 
     /// End a Vector write.
@@ -439,10 +500,31 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     /// Asserts that the builder is in a nested state.
     #[inline]
     pub fn end_vector<T: Push>(&mut self, num_elems: usize) -> WIPOffset<Vector<'fbb, T>> {
-        self.assert_nested("end_vector");
+        self.try_end_vector::<T>(num_elems)
-        self.nested = false;
+            .expect("Flatbuffer allocation failure")
-        let o = self.push::<UOffsetT>(num_elems as UOffsetT);
+    }
-        WIPOffset::new(o.value())
+
+    /// Fallible version of [`create_shared_string`](Self::create_shared_string).
+    ///
+    /// Uses a HashMap to track previously written strings, providing O(1)
+    /// amortized lookup and insertion.
+    #[cfg(feature = "std")]
+    #[inline]
+    pub fn try_create_shared_string<'a: 'b, 'b>(
+        &'a mut self,
+        s: &'b str,
+    ) -> Result<WIPOffset<&'fbb str>, A::Error> {
+        self.assert_not_nested(
+            "create_shared_string can not be called when a table or vector is under construction",
+        );
+
+        if let Some(&offset) = self.strings_pool.get(s) {
+            return Ok(offset);
+        }
+
+        let address = WIPOffset::new(self.try_create_byte_string(s.as_bytes())?.value());
+        self.strings_pool.insert(s.to_owned(), address);
+        Ok(address)
     }
 
     /// Create a utf8 string, and de-duplicate if already created.
@@ -452,26 +534,20 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     #[cfg(feature = "std")]
     #[inline]
     pub fn create_shared_string<'a: 'b, 'b>(&'a mut self, s: &'b str) -> WIPOffset<&'fbb str> {
-        self.assert_not_nested(
+        self.try_create_shared_string(s)
-            "create_shared_string can not be called when a table or vector is under construction",
+            .expect("Flatbuffer allocation failure")
-        );
-
-        if let Some(&offset) = self.strings_pool.get(s) {
-            return offset;
     }
 
-        let address = WIPOffset::new(self.create_byte_string(s.as_bytes()).value());
+    /// Fallible version of [`create_shared_string`](Self::create_shared_string).
-        self.strings_pool.insert(s.to_owned(), address);
-        address
-    }
-
-    /// Create a utf8 string, and de-duplicate if already created.
     ///
     /// Uses a sorted Vec with binary search to track previously written
     /// strings when in `no_std` mode.
     #[cfg(not(feature = "std"))]
     #[inline]
-    pub fn create_shared_string<'a: 'b, 'b>(&'a mut self, s: &'b str) -> WIPOffset<&'fbb str> {
+    pub fn try_create_shared_string<'a: 'b, 'b>(
+        &'a mut self,
+        s: &'b str,
+    ) -> Result<WIPOffset<&'fbb str>, A::Error> {
         self.assert_not_nested(
             "create_shared_string can not be called when a table or vector is under construction",
         );
@@ -494,52 +570,83 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         });
 
         match found {
-            Ok(index) => self.strings_pool[index],
+            Ok(index) => Ok(self.strings_pool[index]),
             Err(index) => {
-                let address = WIPOffset::new(self.create_byte_string(s.as_bytes()).value());
+                let address =
+                    WIPOffset::new(self.try_create_byte_string(s.as_bytes())?.value());
                 self.strings_pool.insert(index, address);
-                address
+                Ok(address)
             }
         }
     }
 
+    /// Create a utf8 string, and de-duplicate if already created.
+    ///
+    /// Uses a sorted Vec with binary search to track previously written
+    /// strings when in `no_std` mode.
+    #[cfg(not(feature = "std"))]
+    #[inline]
+    pub fn create_shared_string<'a: 'b, 'b>(&'a mut self, s: &'b str) -> WIPOffset<&'fbb str> {
+        self.try_create_shared_string(s)
+            .expect("Flatbuffer allocation failure")
+    }
+
+    /// Fallible version of [`create_string`](Self::create_string).
+    #[inline]
+    pub fn try_create_string<'a: 'b, 'b>(
+        &'a mut self,
+        s: &'b str,
+    ) -> Result<WIPOffset<&'fbb str>, A::Error> {
+        self.assert_not_nested(
+            "create_string can not be called when a table or vector is under construction",
+        );
+        Ok(WIPOffset::new(
+            self.try_create_byte_string(s.as_bytes())?.value(),
+        ))
+    }
+
     /// Create a utf8 string.
     ///
     /// The wire format represents this as a zero-terminated byte vector.
     #[inline]
     pub fn create_string<'a: 'b, 'b>(&'a mut self, s: &'b str) -> WIPOffset<&'fbb str> {
+        self.try_create_string(s)
+            .expect("Flatbuffer allocation failure")
+    }
+
+    /// Fallible version of [`create_byte_string`](Self::create_byte_string).
+    #[inline]
+    pub fn try_create_byte_string(
+        &mut self,
+        data: &[u8],
+    ) -> Result<WIPOffset<&'fbb [u8]>, A::Error> {
         self.assert_not_nested(
-            "create_string can not be called when a table or vector is under construction",
+            "create_byte_string can not be called when a table or vector is under construction",
         );
-        WIPOffset::new(self.create_byte_string(s.as_bytes()).value())
+        self.align(data.len() + 1, PushAlignment::new(SIZE_UOFFSET))?;
+        self.try_push(0u8)?;
+        self.push_bytes_unprefixed(data)?;
+        self.try_push(data.len() as UOffsetT)?;
+        Ok(WIPOffset::new(self.used_space() as UOffsetT))
     }
 
     /// Create a zero-terminated byte vector.
     #[inline]
     pub fn create_byte_string(&mut self, data: &[u8]) -> WIPOffset<&'fbb [u8]> {
-        self.assert_not_nested(
+        self.try_create_byte_string(data)
-            "create_byte_string can not be called when a table or vector is under construction",
+            .expect("Flatbuffer allocation failure")
-        );
-        self.align(data.len() + 1, PushAlignment::new(SIZE_UOFFSET));
-        self.push(0u8);
-        self.push_bytes_unprefixed(data);
-        self.push(data.len() as UOffsetT);
-        WIPOffset::new(self.used_space() as UOffsetT)
     }
 
-    /// Create a vector of Push-able objects.
+    /// Fallible version of [`create_vector`](Self::create_vector).
-    ///
-    /// Speed-sensitive users may wish to reduce memory usage by creating the
-    /// vector manually: use `start_vector`, `push`, and `end_vector`.
     #[inline]
-    pub fn create_vector<'a: 'b, 'b, T: Push + 'b>(
+    pub fn try_create_vector<'a: 'b, 'b, T: Push + 'b>(
         &'a mut self,
         items: &'b [T],
-    ) -> WIPOffset<Vector<'fbb, T::Output>> {
+    ) -> Result<WIPOffset<Vector<'fbb, T::Output>>, A::Error> {
         let elem_size = T::size();
         let slice_size = items.len() * elem_size;
-        self.align(slice_size, T::alignment().max_of(SIZE_UOFFSET));
+        self.align(slice_size, T::alignment().max_of(SIZE_UOFFSET))?;
-        self.ensure_capacity(slice_size + UOffsetT::size());
+        self.ensure_capacity(slice_size + UOffsetT::size())?;
 
         self.head -= slice_size;
         let mut written_len = self.head.distance_to_end();
@@ -553,7 +660,38 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
             unsafe { item.push(out, written_len) };
         }
 
-        WIPOffset::new(self.push::<UOffsetT>(items.len() as UOffsetT).value())
+        Ok(WIPOffset::new(
+            self.try_push::<UOffsetT>(items.len() as UOffsetT)?.value(),
+        ))
+    }
+
+    /// Create a vector of Push-able objects.
+    ///
+    /// Speed-sensitive users may wish to reduce memory usage by creating the
+    /// vector manually: use `start_vector`, `push`, and `end_vector`.
+    #[inline]
+    pub fn create_vector<'a: 'b, 'b, T: Push + 'b>(
+        &'a mut self,
+        items: &'b [T],
+    ) -> WIPOffset<Vector<'fbb, T::Output>> {
+        self.try_create_vector(items)
+            .expect("Flatbuffer allocation failure")
+    }
+
+    /// Fallible version of [`create_vector_from_iter`](Self::create_vector_from_iter).
+    #[inline]
+    pub fn try_create_vector_from_iter<T: Push>(
+        &mut self,
+        items: impl ExactSizeIterator<Item = T> + DoubleEndedIterator,
+    ) -> Result<WIPOffset<Vector<'fbb, T::Output>>, A::Error> {
+        let elem_size = T::size();
+        self.align(items.len() * elem_size, T::alignment().max_of(SIZE_UOFFSET))?;
+        let mut actual = 0;
+        for item in items.rev() {
+            self.try_push(item)?;
+            actual += 1;
+        }
+        Ok(WIPOffset::new(self.try_push::<UOffsetT>(actual)?.value()))
     }
 
     /// Create a vector of Push-able objects.
@@ -565,14 +703,8 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         &mut self,
         items: impl ExactSizeIterator<Item = T> + DoubleEndedIterator,
     ) -> WIPOffset<Vector<'fbb, T::Output>> {
-        let elem_size = T::size();
+        self.try_create_vector_from_iter(items)
-        self.align(items.len() * elem_size, T::alignment().max_of(SIZE_UOFFSET));
+            .expect("Flatbuffer allocation failure")
-        let mut actual = 0;
-        for item in items.rev() {
-            self.push(item);
-            actual += 1;
-        }
-        WIPOffset::new(self.push::<UOffsetT>(actual).value())
     }
 
     /// Set whether default values are stored.
@@ -635,13 +767,34 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         assert!(o != 0, "missing required field {}", assert_msg_name);
     }
 
+    /// Fallible version of [`finish_size_prefixed`](Self::finish_size_prefixed).
+    #[inline]
+    pub fn try_finish_size_prefixed<T>(
+        &mut self,
+        root: WIPOffset<T>,
+        file_identifier: Option<&str>,
+    ) -> Result<(), A::Error> {
+        self.finish_with_opts(root, file_identifier, true)
+    }
+
     /// Finalize the FlatBuffer by: aligning it, pushing an optional file
     /// identifier on to it, pushing a size prefix on to it, and marking the
     /// internal state of the FlatBufferBuilder as `finished`. Afterwards,
     /// users can call `finished_data` to get the resulting data.
     #[inline]
     pub fn finish_size_prefixed<T>(&mut self, root: WIPOffset<T>, file_identifier: Option<&str>) {
-        self.finish_with_opts(root, file_identifier, true);
+        self.try_finish_size_prefixed(root, file_identifier)
+            .expect("Flatbuffer allocation failure")
+    }
+
+    /// Fallible version of [`finish`](Self::finish).
+    #[inline]
+    pub fn try_finish<T>(
+        &mut self,
+        root: WIPOffset<T>,
+        file_identifier: Option<&str>,
+    ) -> Result<(), A::Error> {
+        self.finish_with_opts(root, file_identifier, false)
     }
 
     /// Finalize the FlatBuffer by: aligning it, pushing an optional file
@@ -650,7 +803,14 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     /// `finished_data` to get the resulting data.
     #[inline]
     pub fn finish<T>(&mut self, root: WIPOffset<T>, file_identifier: Option<&str>) {
-        self.finish_with_opts(root, file_identifier, false);
+        self.try_finish(root, file_identifier)
+            .expect("Flatbuffer allocation failure")
+    }
+
+    /// Fallible version of [`finish_minimal`](Self::finish_minimal).
+    #[inline]
+    pub fn try_finish_minimal<T>(&mut self, root: WIPOffset<T>) -> Result<(), A::Error> {
+        self.finish_with_opts(root, None, false)
     }
 
     /// Finalize the FlatBuffer by: aligning it and marking the internal state
@@ -658,7 +818,8 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     /// `finished_data` to get the resulting data.
     #[inline]
     pub fn finish_minimal<T>(&mut self, root: WIPOffset<T>) {
-        self.finish_with_opts(root, None, false);
+        self.try_finish_minimal(root)
+            .expect("Flatbuffer allocation failure")
     }
 
     #[inline]
@@ -676,13 +837,13 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     fn write_vtable(
         &mut self,
         table_tail_revloc: WIPOffset<TableUnfinishedWIPOffset>,
-    ) -> WIPOffset<VTableWIPOffset> {
+    ) -> Result<WIPOffset<VTableWIPOffset>, A::Error> {
         self.assert_nested("write_vtable");
 
         // Write the vtable offset, which is the start of any Table.
         // We fill its value later.
         let object_revloc_to_vtable: WIPOffset<VTableWIPOffset> =
-            WIPOffset::new(self.push::<UOffsetT>(0xF0F0_F0F0).value());
+            WIPOffset::new(self.try_push::<UOffsetT>(0xF0F0_F0F0)?.value());
 
         // Layout of the data this function will create when a new vtable is
         // needed.
@@ -725,7 +886,7 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
 
         // fill the WIP vtable with zeros:
         let vtable_byte_len = get_vtable_byte_len(&self.field_locs);
-        self.make_space(vtable_byte_len);
+        self.make_space(vtable_byte_len)?;
 
         // compute the length of the table (not vtable!) in bytes:
         let table_object_size = object_revloc_to_vtable.value() - table_tail_revloc.value();
@@ -750,7 +911,9 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
             }
         }
         let new_vt_bytes = &self.allocator[vt_start_pos.range_to(vt_end_pos)];
-        let found = self.written_vtable_revpos.binary_search_by(|old_vtable_revpos: &UOffsetT| {
+        let found = self
+            .written_vtable_revpos
+            .binary_search_by(|old_vtable_revpos: &UOffsetT| {
                 let old_vtable_pos = self.allocator.len() - *old_vtable_revpos as usize;
                 // Safety:
                 // Already written vtables are valid by construction
@@ -794,17 +957,18 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
 
         self.field_locs.clear();
 
-        object_revloc_to_vtable
+        Ok(object_revloc_to_vtable)
     }
 
     // Only call this when you know it is safe to double the size of the buffer.
     #[inline]
-    fn grow_allocator(&mut self) {
+    fn grow_allocator(&mut self) -> Result<(), A::Error> {
         let starting_active_size = self.used_space();
-        self.allocator.grow_downwards().expect("Flatbuffer allocation failure");
+        self.allocator.grow_downwards()?;
 
         let ending_active_size = self.used_space();
         debug_assert_eq!(starting_active_size, ending_active_size);
+        Ok(())
     }
 
     // with or without a size prefix changes how we load the data, so finish*
@@ -814,7 +978,7 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
         root: WIPOffset<T>,
         file_identifier: Option<&str>,
         size_prefixed: bool,
-    ) {
+    ) -> Result<(), A::Error> {
         self.assert_not_finished("buffer cannot be finished when it is already finished");
         self.assert_not_nested(
             "buffer cannot be finished when a table or vector is under construction",
@@ -827,34 +991,40 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
             // for the size prefix:
             let b = if size_prefixed { SIZE_UOFFSET } else { 0 };
             // for the file identifier (a string that is not zero-terminated):
-            let c = if file_identifier.is_some() { FILE_IDENTIFIER_LENGTH } else { 0 };
+            let c = if file_identifier.is_some() {
+                FILE_IDENTIFIER_LENGTH
+            } else {
+                0
+            };
             a + b + c
         };
 
         {
             let ma = PushAlignment::new(self.min_align);
-            self.align(to_align, ma);
+            self.align(to_align, ma)?;
         }
 
         if let Some(ident) = file_identifier {
             debug_assert_eq!(ident.len(), FILE_IDENTIFIER_LENGTH);
-            self.push_bytes_unprefixed(ident.as_bytes());
+            self.push_bytes_unprefixed(ident.as_bytes())?;
         }
 
-        self.push(root);
+        self.try_push(root)?;
 
         if size_prefixed {
             let sz = self.used_space() as UOffsetT;
-            self.push::<UOffsetT>(sz);
+            self.try_push::<UOffsetT>(sz)?;
         }
         self.finished = true;
+        Ok(())
     }
 
     #[inline]
-    fn align(&mut self, len: usize, alignment: PushAlignment) {
+    fn align(&mut self, len: usize, alignment: PushAlignment) -> Result<(), A::Error> {
         self.track_min_align(alignment.value());
         let s = self.used_space() as usize;
-        self.make_space(padding_bytes(s + len, alignment.value()));
+        self.make_space(padding_bytes(s + len, alignment.value()))?;
+        Ok(())
     }
 
     #[inline]
@@ -863,31 +1033,34 @@ impl<'fbb, A: Allocator> FlatBufferBuilder<'fbb, A> {
     }
 
     #[inline]
-    fn push_bytes_unprefixed(&mut self, x: &[u8]) -> UOffsetT {
+    fn push_bytes_unprefixed(&mut self, x: &[u8]) -> Result<UOffsetT, A::Error> {
-        let n = self.make_space(x.len());
+        let n = self.make_space(x.len())?;
         self.allocator[n.range_to(n + x.len())].copy_from_slice(x);
 
-        n.to_forward_index(&self.allocator) as UOffsetT
+        Ok(n.to_forward_index(&self.allocator) as UOffsetT)
     }
 
     #[inline]
-    fn make_space(&mut self, want: usize) -> ReverseIndex {
+    fn make_space(&mut self, want: usize) -> Result<ReverseIndex, A::Error> {
-        self.ensure_capacity(want);
+        self.ensure_capacity(want)?;
         self.head -= want;
-        self.head
+        Ok(self.head)
     }
 
     #[inline]
-    fn ensure_capacity(&mut self, want: usize) -> usize {
+    fn ensure_capacity(&mut self, want: usize) -> Result<usize, A::Error> {
         if self.unused_ready_space() >= want {
-            return want;
+            return Ok(want);
         }
-        assert!(want <= FLATBUFFERS_MAX_BUFFER_SIZE, "cannot grow buffer beyond 2 gigabytes");
+        assert!(
+            want <= FLATBUFFERS_MAX_BUFFER_SIZE,
+            "cannot grow buffer beyond 2 gigabytes"
+        );
 
         while self.unused_ready_space() < want {
-            self.grow_allocator();
+            self.grow_allocator()?;
         }
-        want
+        Ok(want)
     }
     #[inline]
     fn unused_ready_space(&self) -> usize {
@@ -1129,4 +1302,111 @@ mod tests {
             allocs
         );
     }
+
+    /// A test allocator that fails after a specified number of grow operations.
+    struct FailingAllocator {
+        inner: DefaultAllocator,
+        grows_remaining: usize,
+    }
+
+    #[derive(Debug, Clone, PartialEq, Eq)]
+    struct AllocationError;
+
+    impl core::fmt::Display for AllocationError {
+        fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+            write!(f, "allocation failed")
+        }
+    }
+
+    impl FailingAllocator {
+        fn new(initial_size: usize, max_grows: usize) -> Self {
+            Self {
+                inner: DefaultAllocator::from_vec(vec![0u8; initial_size]),
+                grows_remaining: max_grows,
+            }
+        }
+    }
+
+    impl Deref for FailingAllocator {
+        type Target = [u8];
+        fn deref(&self) -> &Self::Target {
+            &self.inner
+        }
+    }
+
+    impl DerefMut for FailingAllocator {
+        fn deref_mut(&mut self) -> &mut Self::Target {
+            &mut self.inner
+        }
+    }
+
+    unsafe impl Allocator for FailingAllocator {
+        type Error = AllocationError;
+
+        fn grow_downwards(&mut self) -> Result<(), Self::Error> {
+            if self.grows_remaining == 0 {
+                return Err(AllocationError);
+            }
+            self.grows_remaining -= 1;
+            // DefaultAllocator returns Infallible, so unwrap is safe
+            self.inner.grow_downwards().unwrap();
+            Ok(())
+        }
+
+        fn len(&self) -> usize {
+            self.inner.len()
+        }
+    }
+
+    #[test]
+    fn try_push_propagates_allocation_error() {
+        let allocator = FailingAllocator::new(1, 0);
+        let mut builder = FlatBufferBuilder::new_in(allocator);
+
+        let result = builder.try_push::<u64>(0x1234567890ABCDEF);
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn try_create_string_propagates_allocation_error() {
+        let allocator = FailingAllocator::new(1, 0);
+        let mut builder = FlatBufferBuilder::new_in(allocator);
+
+        let result = builder.try_create_string("hello world");
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn try_create_vector_propagates_allocation_error() {
+        let allocator = FailingAllocator::new(1, 0);
+        let mut builder = FlatBufferBuilder::new_in(allocator);
+
+        let result = builder.try_create_vector(&[1u32, 2, 3, 4, 5]);
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn try_methods_succeed_with_sufficient_capacity() {
+        let allocator = FailingAllocator::new(1, 10);
+        let mut builder = FlatBufferBuilder::new_in(allocator);
+
+        let result = builder.try_create_string("hello");
+        assert!(result.is_ok());
+
+        let result = builder.try_create_vector(&[1u32, 2, 3]);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn try_finish_propagates_allocation_error() {
+        let allocator = FailingAllocator::new(1, 3);
+        let mut builder = FlatBufferBuilder::new_in(allocator);
+
+        let start = builder.start_table();
+        let table = builder
+            .try_end_table(start)
+            .expect("end_table should succeed with 3 grows");
+        let result = builder.try_finish_minimal(table);
+        assert!(result.is_err(), "finish should fail after grows exhausted");
+    }
 }

rust/flatbuffers/src/verifier.rs

@@ -492,8 +492,8 @@ impl<'ver, 'opts, 'buf> TableVerifier<'ver, 'opts, 'buf> {
                 Ok(self)
             }
             _ => InvalidFlatbuffer::new_inconsistent_union(
-                key_field_name.into(),
                 val_field_name.into(),
+                key_field_name.into(),
             ),
         }
     }

rust/reflection/src/reflection_verifier.rs

@@ -397,8 +397,8 @@ fn verify_union<'a, 'b, 'c>(
         }
     } else {
         return InvalidFlatbuffer::new_inconsistent_union(
-            format!("{}_type", field.name()),
             field.name().to_string(),
+            format!("{}_type", field.name()),
         )?;
     }
 

samples/monster_generated.swift

@@ -161,7 +161,7 @@ public struct MyGame_Sample_Vec3_Mutable: FlatBufferStruct, FlatbuffersVectorIni
   }
 }
 
-public struct MyGame_Sample_Monster: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Sample_Monster: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -400,7 +400,7 @@ public class MyGame_Sample_MonsterT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Sample_Monster.self) }
 
 }
-public struct MyGame_Sample_Weapon: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Sample_Weapon: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

scripts/generate_grpc_examples.py

@@ -20,6 +20,7 @@ from util import flatc, root_path
 grpc_examples_path = Path(root_path, "grpc/examples")
 
 greeter_schema = str(Path(grpc_examples_path, "greeter.fbs"))
+greeter_schema_v2 = str(Path(grpc_examples_path, "greeter_v2.fbs"))
 
 COMMON_ARGS = [
     "--grpc",
@@ -54,8 +55,8 @@ def GenerateGRPCExamples():
           "--swift",
           "--gen-json-emit",
       ],
-      schema=greeter_schema,
+      schema=greeter_schema_v2,
-      cwd=Path(grpc_examples_path, "swift/Greeter/Sources/Model"),
+      cwd=Path(grpc_examples_path, "swift/Greeter/Sources/Models"),
   )
 
   flatc(

src/idl_gen_python.cpp

@@ -2471,7 +2471,7 @@ class PythonGenerator : public BaseGenerator {
     } else {
       GenPackForScalarVectorFieldHelper(struct_def, field, code_prefix_ptr, 3);
       code_prefix += "(self." + field_field + "[i])";
-      code_prefix += GenIndents(4) + field_field + " = builder.EndVector()";
+      code_prefix += GenIndents(3) + field_field + " = builder.EndVector()";
     }
   }
 

src/idl_gen_swift.cpp

@@ -170,9 +170,8 @@ class SwiftGenerator : public BaseGenerator {
     code_ += "// swiftformat:disable all\n";
 
     if (parser_.opts.include_dependence_headers || parser_.opts.generate_all) {
-      code_.SetValue("IMPLEMENTONLY", parser_.opts.swift_implementation_only
+      code_.SetValue("IMPLEMENTONLY",
-                                          ? "@_implementationOnly "
+                     parser_.opts.swift_implementation_only ? "internal " : "");
-                                          : "");
       code_ += "#if canImport(Common)";
       code_ += "{{IMPLEMENTONLY}}import Common";
       code_ += "#endif";
@@ -549,13 +548,14 @@ class SwiftGenerator : public BaseGenerator {
     code_.SetValue("SHORT_STRUCTNAME", namer_.Type(struct_def));
     code_.SetValue("STRUCTNAME", namer_.NamespacedType(struct_def));
     code_.SetValue("OBJECTTYPE", struct_def.fixed ? "Struct" : "Table");
+    code_.SetValue("PROTOCOL", struct_def.fixed ? "FlatBufferStruct"
+                                                : "FlatBufferVerifiableTable");
     code_.SetValue("MUTABLE", struct_def.fixed ? Mutable() : "");
 
     GenOSVersionChecks();
     code_ +=
         "{{ACCESS_TYPE}} struct {{STRUCTNAME}}{{MUTABLE}}: "
-        "FlatBuffer{{OBJECTTYPE}}, FlatbuffersVectorInitializable\\";
+        "{{PROTOCOL}}, FlatbuffersVectorInitializable\\";
-    if (!struct_def.fixed) code_ += ", Verifiable\\";
     if (!struct_def.fixed && parser_.opts.generate_object_based_api)
       code_ += ", ObjectAPIPacker\\";
     code_ += " {\n";

src/idl_parser.cpp

@@ -4132,7 +4132,15 @@ bool StructDef::Deserialize(Parser& parser, const reflection::Object* object) {
   sortbysize = attributes.Lookup("original_order") == nullptr && !fixed;
   const auto& of = *(object->fields());
   auto indexes = std::vector<uoffset_t>(of.size());
-  for (uoffset_t i = 0; i < of.size(); i++) indexes[of.Get(i)->id()] = i;
+  for (uoffset_t i = 0; i < of.size(); i++) {
+  uint16_t field_id = of.Get(i)->id();
+  if (field_id >= of.size()) {
+    parser.error_ = "Field ID " + std::to_string(field_id) + 
+                    " exceeds field count " + std::to_string(of.size());
+    return false;
+  }
+  indexes[field_id] = i;
+}
   size_t tmp_struct_size = 0;
   for (size_t i = 0; i < indexes.size(); i++) {
     auto field = of.Get(indexes[i]);

src/reflection.cpp

@@ -389,7 +389,7 @@ void ForAllFields(const reflection::Object* object, bool reverse,
 
   for (size_t i = 0; i < field_to_id_map.size(); ++i) {
     func(object->fields()->Get(
-        field_to_id_map[reverse ? field_to_id_map.size() - i + 1 : i]));
+        field_to_id_map[reverse ? field_to_id_map.size() - (i + 1) : i]));
   }
 }
 

swift/Sources/FlatBuffers/ByteBuffer.swift

@@ -20,7 +20,7 @@ import Foundation
 /// it allows users to write and read data directly from memory thus the use of its
 /// functions should be used
 @frozen
-public struct ByteBuffer {
+public struct ByteBuffer: @unchecked Sendable {
 
   /// Storage is a container that would hold the memory pointer to solve the issue of
   /// deallocating the memory that was held by (memory: UnsafeMutableRawPointer)
@@ -30,7 +30,7 @@ public struct ByteBuffer {
     enum Blob {
       #if !os(WASI)
       case data(Data)
-      case bytes(ContiguousBytes)
+      case bytes(any ContiguousBytes)
       #endif
 
       case byteBuffer(_InternalByteBuffer)

swift/Sources/FlatBuffers/Enum.swift

@@ -23,7 +23,7 @@ import Common
 /// Enum is a protocol that all flatbuffers enums should conform to
 /// Since it allows us to get the actual `ByteSize` and `Value` from
 /// a swift enum.
-public protocol Enum {
+public protocol Enum: Sendable {
   /// associatedtype that the type of the enum should conform to
   associatedtype T: Scalar & Verifiable
   /// Size of the current associatedtype in the enum

swift/Sources/FlatBuffers/FlatBufferBuilder.swift

@@ -45,7 +45,7 @@ public struct FlatBufferBuilder {
   /// Dictonary that stores a map of all the strings that were written to the buffer
   private var stringOffsetMap: [String: Offset] = [:]
   /// A check to see if finish(::) was ever called to retreive data object
-  private var finished = false
+  private(set) var finished = false
   /// A check to see if the buffer should serialize Default values
   private var serializeDefaults: Bool
 
@@ -488,7 +488,7 @@ public struct FlatBufferBuilder {
   ///
   /// - Parameter bytes: bytes to be written into the buffer
   /// - Returns: ``Offset`` of the vector
-  mutating public func createVector(bytes: ContiguousBytes) -> Offset {
+  mutating public func createVector(bytes: any ContiguousBytes) -> Offset {
     bytes.withUnsafeBytes {
       startVector($0.count, elementSize: MemoryLayout<UInt8>.size)
       _bb.push(bytes: $0)

swift/Sources/FlatBuffers/FlatBufferObject.swift

@@ -20,6 +20,8 @@ import Foundation
 /// since now we will be serializing native structs into the buffer.
 public protocol NativeStruct {}
 
+public protocol FlatBufferVerifiableNativeStruct: NativeStruct, Verifiable {}
+
 /// FlatbuffersInitializable is a protocol that allows any object to be
 /// Initialized from a ByteBuffer
 public protocol FlatbuffersInitializable {
@@ -35,6 +37,8 @@ public protocol FlatBufferTable: FlatbuffersInitializable,
   var __buffer: ByteBuffer! { get }
 }
 
+public protocol FlatBufferVerifiableTable: FlatBufferTable, Verifiable {}
+
 /// FlatbufferStruct structures all the Flatbuffers structs
 public protocol FlatBufferStruct: FlatbuffersInitializable,
   FlatbuffersVectorInitializable

swift/Sources/FlatBuffers/Message.swift

@@ -16,50 +16,52 @@
 
 import Foundation
 
-/// FlatBufferGRPCMessage protocol that should allow us to invoke
+enum FlatbuffersGRPCError: Error {
-/// initializers directly from the GRPC generated code
+  case finishedNotCalledOnBuilder
-public protocol FlatBufferGRPCMessage {
+}
-  /// Size of readable bytes in the buffer
-  var size: Int { get }
 
+public protocol GRPCVerifiableMessage<Message> {
+  associatedtype Message
+
+  init(pointer: UnsafeRawBufferPointer)
   init(byteBuffer: ByteBuffer)
 
-  @discardableResult
+  func decode() throws -> Message
-  @inline(__always)
+  func withUnsafeReadableBytes<Data>(
-  func withUnsafeReadableBytes<T>(
     _ body: (UnsafeRawBufferPointer) throws
-      -> T) rethrows -> T
+      -> Data) rethrows -> Data
 }
 
-/// Message is a wrapper around Buffers to to able to send Flatbuffers `Buffers` through the
+public struct GRPCMessage<
-/// GRPC library
+  Table: FlatBufferVerifiableTable
-public struct Message<T: FlatBufferTable>: FlatBufferGRPCMessage {
+>: Sendable, GRPCVerifiableMessage {
-  internal var buffer: ByteBuffer
+  public typealias Message = Table
 
-  /// Returns the an object of type T that would be  read from the buffer
+  private let buffer: ByteBuffer
-  public var object: T {
-    T.init(
-      buffer,
-      o: Int32(buffer.read(def: UOffset.self, position: buffer.reader)) &+
-        Int32(buffer.reader))
-  }
 
   public var size: Int { Int(buffer.size) }
 
-  /// Initializes the message with the type Flatbuffer.Bytebuffer that is transmitted over
+  public init(pointer: UnsafeRawBufferPointer) {
-  /// GRPC
+    buffer = ByteBuffer(
-  /// - Parameter byteBuffer: Flatbuffer ByteBuffer object
+      copyingMemoryBound: pointer.baseAddress!,
+      capacity: pointer.count)
+  }
+
+  public init(builder: inout FlatBufferBuilder) throws {
+    guard builder.finished else {
+      throw FlatbuffersGRPCError.finishedNotCalledOnBuilder
+    }
+
+    buffer = builder.sizedBuffer
+  }
+
   public init(byteBuffer: ByteBuffer) {
     buffer = byteBuffer
   }
 
-  /// Initializes the message by copying the buffer to the message to be sent.
+  public func decode() throws -> Table {
-  /// from the builder
+    var buf = buffer
-  /// - Parameter builder: FlatbufferBuilder that has the bytes created in
+    return try getCheckedRoot(byteBuffer: &buf)
-  /// - Note: Use  `builder.finish(offset)` before passing the builder without prefixing anything to it
-  public init(builder: inout FlatBufferBuilder) {
-    buffer = builder.sizedBuffer
-    builder.clear()
   }
 
   @discardableResult
@@ -73,3 +75,30 @@ public struct Message<T: FlatBufferTable>: FlatBufferGRPCMessage {
     }
   }
 }
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+public struct FlatBuffersMessageSerializer<
+  Message: GRPCVerifiableMessage
+>: Sendable {
+  public init() {}
+
+  public func serialize<Data>(
+    message: Message,
+    _ completion: (UnsafeRawBufferPointer) throws -> Data) throws -> Data
+  {
+    return try message.withUnsafeReadableBytes {
+      try completion($0)
+    }
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+public struct FlatBuffersMessageDeserializer<
+  Message: GRPCVerifiableMessage
+>: Sendable {
+  public init() {}
+
+  public func deserialize(pointer: UnsafeRawBufferPointer) throws -> Message {
+    Message.init(pointer: pointer)
+  }
+}

swift/Sources/FlatBuffers/TableVerifier.swift

@@ -115,7 +115,7 @@ public struct TableVerifier {
     unionKeyName: String,
     fieldName: String,
     required: Bool,
-    completion: @escaping (inout Verifier, T, Int) throws -> Void) throws
+    completion: (inout Verifier, T, Int) throws -> Void) throws
     where T: UnionEnum
   {
     let keyPos = try dereference(key)

swift/Sources/FlatBuffers/Vectors/FlatbufferVector.swift

@@ -68,7 +68,7 @@ public struct FlatbufferVector<
 }
 
 extension FlatbufferVector: Encodable where Element: Encodable {
-  public func encode(to encoder: Encoder) throws {
+  public func encode(to encoder: any Encoder) throws {
     var container = encoder.unkeyedContainer()
     for element in self {
       try container.encode(element)

swift/Sources/FlatBuffers/Vectors/UnionFlatbufferVector.swift

@@ -49,8 +49,8 @@ public struct UnionFlatbufferVector {
 
   public subscript(
     position: Int,
-    Type: FlatbuffersVectorInitializable
+    Type: any FlatbuffersVectorInitializable
-      .Type) -> FlatbuffersVectorInitializable
+      .Type) -> any FlatbuffersVectorInitializable
   {
     guard position < count else {
       fatalError(

swift/Sources/FlatBuffers/Verifiable.swift

@@ -56,8 +56,15 @@ extension Verifiable {
     let len: UOffset = try verifier.getValue(at: position)
     let intLen = Int(len)
     let start = Int(clamping: (position &+ MemoryLayout<Int32>.size).magnitude)
+    let byteCount = intLen.multipliedReportingOverflow(
+      by: MemoryLayout<T>.size)
+    guard !byteCount.overflow else {
+      throw FlatbuffersErrors.outOfBounds(
+        position: UInt.max,
+        end: verifier.capacity)
+    }
     try verifier.isAligned(position: start, type: type.self)
-    try verifier.rangeInBuffer(position: start, size: intLen)
+    try verifier.rangeInBuffer(position: start, size: byteCount.partialValue)
     return (start, intLen)
   }
 }

swift/Sources/FlatBuffers/_InternalByteBuffer.swift

@@ -146,7 +146,7 @@ struct _InternalByteBuffer {
   #if !os(WASI)
   @inline(__always)
   @usableFromInline
-  mutating func push(bytes: ContiguousBytes) {
+  mutating func push(bytes: any ContiguousBytes) {
     bytes.withUnsafeBytes { ptr in
       ensureSpace(size: ptr.count)
       memcpy(

swift/Sources/FlexBuffers/ByteBuffer.swift

@@ -30,7 +30,7 @@ public struct ByteBuffer {
     enum Blob {
       #if !os(WASI)
       case data(Data)
-      case bytes(ContiguousBytes)
+      case bytes(any ContiguousBytes)
       #endif
 
       case byteBuffer(_InternalByteBuffer)

swift/Sources/FlexBuffers/FlexBufferType.swift

@@ -16,7 +16,7 @@
 
 import Foundation
 
-public enum FlexBufferType: UInt64 {
+public enum FlexBufferType: UInt64, Sendable {
   case null = 0
   /// Variable width signed integer: `Int8, Int16, Int32, Int64`
   case int = 1

swift/Sources/FlexBuffers/Utils/BitWidth.swift

@@ -17,7 +17,7 @@
 import Foundation
 
 @usableFromInline
-enum BitWidth: UInt64, CaseIterable {
+enum BitWidth: UInt64, CaseIterable, Sendable {
   case w8 = 0
   case w16 = 1
   case w32 = 2

swift/Sources/FlexBuffers/Utils/Value.swift

@@ -20,10 +20,10 @@ import Foundation
 import Common
 #endif
 
-public struct Value: Equatable {
+public struct Value: Equatable, Sendable {
 
   @usableFromInline
-  enum Union: Equatable {
+  enum Union: Equatable, Sendable {
     case i(Int64)
     case u(UInt64)
     case f(Double)

swift/Sources/FlexBuffers/Writer/FlexBuffersWriter.swift

@@ -977,6 +977,9 @@ fileprivate struct Stack: RandomAccessCollection {
   mutating func removeAll(keepingCapacity keepCapacity: Bool = false) {
     count = 0
     if !keepCapacity {
+      let ptr = storage.memory
+      defer { ptr.deallocate() }
+
       capacity = Self.initialCapacity
       storage.memory = UnsafeMutableRawPointer.allocate(
         byteCount: capacity,

tests/reflection_test.cpp

@@ -248,6 +248,93 @@ void ReflectionTest(const std::string& tests_data_path, uint8_t* flatbuf,
           true);
 }
 
+// Test that ForAllFields with reverse=true iterates fields in descending
+// ID order. This exercises a fix for an operator precedence bug where the
+// expression `size() - i + 1` was evaluated as `(size() - i) + 1` instead
+// of the correct `size() - (i + 1)`, causing an out-of-bounds read.
+void ForAllFieldsReverseTest(const std::string& tests_data_path) {
+  // Load the binary schema.
+  std::string bfbsfile;
+  TEST_EQ(flatbuffers::LoadFile((tests_data_path + "monster_test.bfbs").c_str(),
+                                true, &bfbsfile),
+          true);
+
+  // Verify the schema.
+  flatbuffers::Verifier verifier(
+      reinterpret_cast<const uint8_t*>(bfbsfile.c_str()), bfbsfile.length());
+  TEST_EQ(reflection::VerifySchemaBuffer(verifier), true);
+
+  auto& schema = *reflection::GetSchema(bfbsfile.c_str());
+
+  // Use the Stat table which has 3 fields with sequential IDs:
+  //   id:string   (id: 0)
+  //   val:long     (id: 1)
+  //   count:ushort (id: 2)
+  auto stat_object = schema.objects()->LookupByKey("MyGame.Example.Stat");
+  TEST_NOTNULL(stat_object);
+  TEST_EQ(stat_object->fields()->size(), 3u);
+
+  // Test forward iteration: fields should come in ascending ID order (0,1,2).
+  {
+    std::vector<uint16_t> forward_ids;
+    flatbuffers::ForAllFields(
+        stat_object, /*reverse=*/false,
+        [&forward_ids](const reflection::Field* field) {
+          forward_ids.push_back(field->id());
+        });
+    TEST_EQ(forward_ids.size(), 3u);
+    TEST_EQ(forward_ids[0], 0);  // id
+    TEST_EQ(forward_ids[1], 1);  // val
+    TEST_EQ(forward_ids[2], 2);  // count
+  }
+
+  // Test reverse iteration: fields should come in descending ID order (2,1,0).
+  // With the old buggy code `size() - i + 1`, at i=0 this would compute
+  // index 3 - 0 + 1 = 4, which is out of bounds for a size-3 vector.
+  {
+    std::vector<uint16_t> reverse_ids;
+    flatbuffers::ForAllFields(
+        stat_object, /*reverse=*/true,
+        [&reverse_ids](const reflection::Field* field) {
+          reverse_ids.push_back(field->id());
+        });
+    TEST_EQ(reverse_ids.size(), 3u);
+    TEST_EQ(reverse_ids[0], 2);  // count (highest ID first)
+    TEST_EQ(reverse_ids[1], 1);  // val
+    TEST_EQ(reverse_ids[2], 0);  // id (lowest ID last)
+  }
+
+  // Also test with the root Monster table which has many fields and
+  // non-sequential definition order vs. ID order (e.g., pos=id:0, hp=id:2,
+  // mana=id:1). This ensures the ID-to-index mapping works correctly.
+  auto root_table = schema.root_table();
+  TEST_NOTNULL(root_table);
+  {
+    std::vector<uint16_t> forward_ids;
+    flatbuffers::ForAllFields(
+        root_table, /*reverse=*/false,
+        [&forward_ids](const reflection::Field* field) {
+          forward_ids.push_back(field->id());
+        });
+    // Verify ascending order.
+    for (size_t i = 1; i < forward_ids.size(); ++i) {
+      TEST_ASSERT(forward_ids[i - 1] < forward_ids[i]);
+    }
+  }
+  {
+    std::vector<uint16_t> reverse_ids;
+    flatbuffers::ForAllFields(
+        root_table, /*reverse=*/true,
+        [&reverse_ids](const reflection::Field* field) {
+          reverse_ids.push_back(field->id());
+        });
+    // Verify descending order.
+    for (size_t i = 1; i < reverse_ids.size(); ++i) {
+      TEST_ASSERT(reverse_ids[i - 1] > reverse_ids[i]);
+    }
+  }
+}
+
 void MiniReflectFlatBuffersTest(uint8_t* flatbuf) {
   auto s =
       flatbuffers::FlatBufferToString(flatbuf, Monster::MiniReflectTypeTable());

tests/reflection_test.h

@@ -10,6 +10,7 @@ namespace tests {
 
 void ReflectionTest(const std::string& tests_data_path, uint8_t* flatbuf,
                     size_t length);
+void ForAllFieldsReverseTest(const std::string& tests_data_path);
 void MiniReflectFixedLengthArrayTest();
 void MiniReflectFlatBuffersTest(uint8_t* flatbuf);
 

tests/rust_usage_test/tests/integration_test.rs

@@ -3448,4 +3448,250 @@ fn test_shared_strings_pool_deduplication() {
 }
 
 } // mod flatbuffers_tests
+
+#[cfg(test)]
+mod try_api {
+    extern crate flatbuffers;
+
+    use alloc::vec::Vec;
+    use flatbuffers::Follow;
+    use super::my_game;
+    use super::serialized_example_is_accessible_and_correct;
+
+    #[test]
+    fn try_api_full_table_roundtrip() {
+        // Build a Monster using exclusively try_* API (mirrors library_code example).
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+
+        let nested_union_mon = {
+            let name = builder.try_create_string("Fred").unwrap();
+            let table_start = builder.start_table();
+            builder
+                .try_push_slot_always(my_game::example::Monster::VT_NAME, name)
+                .unwrap();
+            builder.try_end_table(table_start).unwrap()
+        };
+        let pos = my_game::example::Vec3::new(
+            1.0,
+            2.0,
+            3.0,
+            3.0,
+            my_game::example::Color::Green,
+            &my_game::example::Test::new(5i16, 6i8),
+        );
+        let inv = builder.try_create_vector(&[0u8, 1, 2, 3, 4]).unwrap();
+        let test4 = builder
+            .try_create_vector(
+                &[
+                    my_game::example::Test::new(10, 20),
+                    my_game::example::Test::new(30, 40),
+                ][..],
+            )
+            .unwrap();
+
+        let name = builder.try_create_string("MyMonster").unwrap();
+        let test1 = builder.try_create_string("test1").unwrap();
+        let test2 = builder.try_create_string("test2").unwrap();
+        let testarrayofstring = builder.try_create_vector(&[test1, test2]).unwrap();
+
+        let table_start = builder.start_table();
+        builder
+            .try_push_slot(my_game::example::Monster::VT_HP, 80i16, 100)
+            .unwrap();
+        builder
+            .try_push_slot_always(my_game::example::Monster::VT_NAME, name)
+            .unwrap();
+        builder
+            .try_push_slot_always(my_game::example::Monster::VT_POS, &pos)
+            .unwrap();
+        builder
+            .try_push_slot(
+                my_game::example::Monster::VT_TEST_TYPE,
+                my_game::example::Any::Monster,
+                my_game::example::Any::NONE,
+            )
+            .unwrap();
+        builder
+            .try_push_slot_always(my_game::example::Monster::VT_TEST, nested_union_mon)
+            .unwrap();
+        builder
+            .try_push_slot_always(my_game::example::Monster::VT_INVENTORY, inv)
+            .unwrap();
+        builder
+            .try_push_slot_always(my_game::example::Monster::VT_TEST4, test4)
+            .unwrap();
+        builder
+            .try_push_slot_always(
+                my_game::example::Monster::VT_TESTARRAYOFSTRING,
+                testarrayofstring,
+            )
+            .unwrap();
+        let root = builder.try_end_table(table_start).unwrap();
+        builder
+            .try_finish(root, Some(my_game::example::MONSTER_IDENTIFIER))
+            .unwrap();
+
+        let buf = builder.finished_data();
+        serialized_example_is_accessible_and_correct(buf, true, false).unwrap();
+    }
+
+    #[test]
+    fn try_shared_string_deduplication() {
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let offset1 = builder
+            .try_create_shared_string("welcome to flatbuffers!!")
+            .unwrap();
+        let offset2 = builder.try_create_shared_string("welcome").unwrap();
+        let offset3 = builder
+            .try_create_shared_string("welcome to flatbuffers!!")
+            .unwrap();
+        assert_ne!(offset2.value(), offset3.value());
+        assert_eq!(offset1.value(), offset3.value());
+
+        builder.reset();
+        let offset4 = builder.try_create_shared_string("welcome").unwrap();
+        let offset5 = builder
+            .try_create_shared_string("welcome to flatbuffers!!")
+            .unwrap();
+        assert_ne!(offset2.value(), offset4.value());
+        assert_ne!(offset5.value(), offset1.value());
+
+        builder.reset();
+        // Shared strings work with an object in between writes
+        let name = builder.try_create_shared_string("foo").unwrap();
+        let enemy =
+            my_game::example::Monster::create(&mut builder, &my_game::example::MonsterArgs {
+                name: Some(name),
+                ..Default::default()
+            });
+        let secondary_name = builder.try_create_shared_string("foo").unwrap();
+        assert_eq!(name.value(), secondary_name.value());
+
+        let args = my_game::example::MonsterArgs {
+            name: Some(secondary_name),
+            enemy: Some(enemy),
+            testarrayofstring: Some(builder.try_create_vector(&[name, secondary_name]).unwrap()),
+            ..Default::default()
+        };
+        let main_monster = my_game::example::Monster::create(&mut builder, &args);
+        builder.try_finish(main_monster, None).unwrap();
+        let monster =
+            my_game::example::root_as_monster(builder.finished_data()).unwrap();
+
+        assert_eq!(monster.enemy().unwrap().name(), "foo");
+        let string_vector = monster.testarrayofstring().unwrap();
+        assert_eq!(string_vector.get(0), "foo");
+        assert_eq!(string_vector.get(1), "foo");
+    }
+
+    #[test]
+    fn try_vector_manual_build_roundtrip() {
+        // Build a vector of scalars manually using try_start_vector / try_push / try_end_vector.
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let items: Vec<u32> = vec![10, 20, 30, 40, 50];
+
+        builder
+            .try_start_vector::<u32>(items.len())
+            .unwrap();
+        for &v in items.iter().rev() {
+            builder.try_push::<u32>(v).unwrap();
+        }
+        let vecend = builder.try_end_vector::<u32>(items.len()).unwrap();
+        builder.try_finish_minimal(vecend).unwrap();
+
+        let buf = builder.finished_data();
+        let got = unsafe {
+            <flatbuffers::ForwardsUOffset<flatbuffers::Vector<u32>>>::follow(&buf[..], 0)
+        };
+        let result: Vec<u32> = got.iter().collect();
+        assert_eq!(result, items);
+    }
+
+    #[test]
+    fn try_create_vector_roundtrip() {
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let items: Vec<i64> = vec![-1, 0, 1, i64::MIN, i64::MAX];
+        let offset = builder.try_create_vector(&items).unwrap();
+        builder.try_finish_minimal(offset).unwrap();
+
+        let buf = builder.finished_data();
+        let got = unsafe {
+            <flatbuffers::ForwardsUOffset<flatbuffers::Vector<i64>>>::follow(&buf[..], 0)
+        };
+        let result: Vec<i64> = got.iter().collect();
+        assert_eq!(result, items);
+    }
+
+    #[test]
+    fn try_create_vector_from_iter_roundtrip() {
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let items: Vec<f64> = vec![1.0, 2.5, -3.14, 0.0];
+        let offset = builder
+            .try_create_vector_from_iter(items.iter().copied())
+            .unwrap();
+        builder.try_finish_minimal(offset).unwrap();
+
+        let buf = builder.finished_data();
+        let got = unsafe {
+            <flatbuffers::ForwardsUOffset<flatbuffers::Vector<f64>>>::follow(&buf[..], 0)
+        };
+        let result: Vec<f64> = got.iter().collect();
+        assert_eq!(result, items);
+    }
+
+    #[test]
+    fn try_create_byte_string_roundtrip() {
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let data = b"hello bytes";
+        let offset = builder.try_create_byte_string(data).unwrap();
+        builder.try_finish_minimal(offset).unwrap();
+
+        let buf = builder.finished_data();
+        let got = unsafe {
+            <flatbuffers::ForwardsUOffset<&[u8]>>::follow(&buf[..], 0)
+        };
+        assert_eq!(got, data);
+    }
+
+    #[test]
+    fn try_finish_size_prefixed_roundtrip() {
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let args = &my_game::example::MonsterArgs {
+            mana: 200,
+            hp: 300,
+            name: Some(builder.try_create_string("bob").unwrap()),
+            ..Default::default()
+        };
+        let mon = my_game::example::Monster::create(&mut builder, &args);
+        builder.try_finish_size_prefixed(mon, None).unwrap();
+
+        let buf = builder.finished_data();
+        let m = flatbuffers::size_prefixed_root::<my_game::example::Monster>(buf).unwrap();
+        assert_eq!(m.mana(), 200);
+        assert_eq!(m.hp(), 300);
+        assert_eq!(m.name(), "bob");
+    }
+
+    #[test]
+    fn try_finish_with_file_identifier() {
+        let mut builder = flatbuffers::FlatBufferBuilder::new();
+        let name = builder.try_create_string("foo").unwrap();
+        let args = &my_game::example::MonsterArgs {
+            name: Some(name),
+            hp: 42,
+            ..Default::default()
+        };
+        let mon = my_game::example::Monster::create(&mut builder, &args);
+        builder
+            .try_finish(mon, Some(my_game::example::MONSTER_IDENTIFIER))
+            .unwrap();
+
+        let buf = builder.finished_data();
+        assert!(my_game::example::monster_buffer_has_identifier(buf));
+        let m = my_game::example::root_as_monster(buf).unwrap();
+        assert_eq!(m.name(), "foo");
+        assert_eq!(m.hp(), 42);
+    }
+}
+
 }

tests/swift/Tests/Flatbuffers/ByteBufferTests.swift

@@ -14,51 +14,58 @@
  * limitations under the License.
  */
 
-import XCTest
+import Foundation
+import Testing
 
 @testable import FlatBuffers
 
-final class ByteBufferTests: XCTestCase {
+struct ByteBufferTests {
+
+  @Test
   func testCopyingMemory() {
     let count = 100
     let ptr = UnsafeMutableRawPointer.allocate(byteCount: count, alignment: 1)
     let byteBuffer = ByteBuffer(copyingMemoryBound: ptr, capacity: count)
     byteBuffer.withUnsafeBytes { memory in
-      XCTAssertNotEqual(memory.baseAddress, ptr)
+      #expect(memory.baseAddress! != ptr)
     }
   }
 
+  @Test
   func testSamePointer() {
     let count = 100
     let ptr = UnsafeMutableRawPointer.allocate(byteCount: count, alignment: 1)
     let byteBuffer = ByteBuffer(assumingMemoryBound: ptr, capacity: count)
     byteBuffer.withUnsafeBytes { memory in
-      XCTAssertEqual(memory.baseAddress!, ptr)
+      #expect(memory.baseAddress! == ptr)
     }
   }
 
+  @Test
   func testSameDataPtr() {
     let count = 100
     let ptr = Data(repeating: 0, count: count)
     let byteBuffer = ByteBuffer(data: ptr)
     byteBuffer.withUnsafeBytes { memory in
       ptr.withUnsafeBytes { ptr in
-        XCTAssertEqual(memory.baseAddress!, ptr.baseAddress!)
+        #expect(memory.baseAddress! == ptr.baseAddress!)
       }
     }
   }
 
+  @Test
   func testSameArrayPtr() {
     let count = 100
     let ptr: [UInt8] = Array(repeating: 0, count: count)
     let byteBuffer = ByteBuffer(bytes: ptr)
     ptr.withUnsafeBytes { ptr in
       byteBuffer.withUnsafeBytes { memory in
-        XCTAssertEqual(memory.baseAddress, ptr.baseAddress)
+        #expect(memory.baseAddress == ptr.baseAddress)
       }
     }
   }
 
+  @Test
   func testReadingDoubleBuffer() {
     let count = 8
     let array: [Double] = Array(repeating: 8.8, count: count)
@@ -69,15 +76,16 @@ final class ByteBufferTests: XCTestCase {
     }
     let byteBuffer = ByteBuffer(bytes: bytes)
     byteBuffer.withUnsafePointerToSlice(index: 0, count: count) { ptr in
-      XCTAssertEqual(ptr.count, count)
+      #expect(ptr.count == count)
       bytes.withUnsafeBufferPointer {
-        XCTAssertEqual(
+        #expect(
-          UnsafeRawPointer($0.baseAddress),
+          UnsafeRawPointer($0.baseAddress) ==
             UnsafeRawPointer(ptr.baseAddress))
       }
     }
   }
 
+  @Test
   func testReadingNativeStructs() {
     let array = [
       MyGame_Example_Vec3(
@@ -111,10 +119,10 @@ final class ByteBufferTests: XCTestCase {
     let byteBuffer = ByteBuffer(bytes: bytes)
     byteBuffer
       .withUnsafePointerToSlice(index: 0, count: count) { bufferPointer in
-        XCTAssertEqual(bufferPointer.count, count)
+        #expect(bufferPointer.count == count)
         bytes.withUnsafeBufferPointer { ptr in
-          XCTAssertEqual(
+          #expect(
-            UnsafeRawPointer(ptr.baseAddress),
+            UnsafeRawPointer(ptr.baseAddress) ==
               UnsafeRawPointer(bufferPointer.baseAddress))
         }
       }
@@ -126,7 +134,3 @@ private struct TestNativeStructs: NativeStruct {
   let y: Double
   let z: Int
 }
-
-extension MyGame_Example_Color: CaseIterable {
-  public static var allCases: [MyGame_Example_Color] = [.red, .blue, .green]
-}

tests/swift/Tests/Flatbuffers/FlatBuffersArraysTests.swift

@@ -16,18 +16,22 @@
 
 #if compiler(>=6.2)
 
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
-@available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
+struct FlatBuffersArraysTests {
-final class FlatBuffersArraysTests: XCTestCase {
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
+  @Test
   func testStructSizes() {
-    XCTAssertEqual(MemoryLayout<MyGame_Example_NestedStruct>.size, 32)
+    #expect(MemoryLayout<MyGame_Example_NestedStruct>.size == 32)
-    XCTAssertEqual(MemoryLayout<MyGame_Example_ArrayStruct>.size, 160)
+    #expect(MemoryLayout<MyGame_Example_ArrayStruct>.size == 160)
+    #expect((MemoryLayout<MyGame_Example_LargeArrayStruct>.size == 2496))
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
+  @Test
   func testGoldenData() {
     // swiftformat:disable all
     let data: [UInt8] = [
@@ -44,9 +48,11 @@ final class FlatBuffersArraysTests: XCTestCase {
     ]
     // swiftformat:enable all
 
-    XCTAssertEqual(data, createArrayTable())
+    #expect(data == createArrayTable())
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
+  @Test
   func testData() throws {
     var buf = ByteBuffer(bytes: createArrayTable())
     let table: MyGame_Example_ArrayTable = try getCheckedRoot(
@@ -57,6 +63,8 @@ final class FlatBuffersArraysTests: XCTestCase {
     verifyNativeStruct(a: table.a)
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
+  @Test
   func testObjectAPI() throws {
     var buf = ByteBuffer(bytes: createArrayTable())
     let table: MyGame_Example_ArrayTable = try getCheckedRoot(
@@ -65,9 +73,11 @@ final class FlatBuffersArraysTests: XCTestCase {
     verifyNativeStruct(a: table.unpack().a)
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
+  @Test
   func testDefaults() {
-    XCTAssertEqual(
+    #expect(
-      MyGame_Example_NestedStruct(),
+      MyGame_Example_NestedStruct() ==
         MyGame_Example_NestedStruct(
           a: [0, 0],
           b: .a,
@@ -75,95 +85,98 @@ final class FlatBuffersArraysTests: XCTestCase {
           d: [0, 0]))
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
   func verifyNativeStruct(a: MyGame_Example_ArrayStruct?) {
     let a = a!
-    XCTAssertEqual(a.a, 12.34)
+    #expect(a.a == 12.34)
-    XCTAssertEqual(a.b.count, 15)
+    #expect(a.b.count == 15)
     var sum: Int32 = 0
     for i in a.b.startIndex..<a.b.endIndex {
       sum += a.b[i]
     }
-    XCTAssertEqual(sum, 120)
+    #expect(sum == 120)
-    XCTAssertEqual(a.c, -127)
+    #expect(a.c == -127)
-    XCTAssertEqual(a.d.count, 2)
+    #expect(a.d.count == 2)
     let nestedStruct1 = a.d[0]
-    XCTAssertEqual(nestedStruct1.a.toArray(), [-1, 2])
+    #expect(nestedStruct1.a.toArray() == [-1, 2])
-    XCTAssertEqual(nestedStruct1.b, .a)
+    #expect(nestedStruct1.b == .a)
-    XCTAssertEqual(nestedStruct1.c.toArray(), [.c, .b])
+    #expect(nestedStruct1.c.toArray() == [.c, .b])
-    XCTAssertEqual(
+    #expect(
-      nestedStruct1.d.toArray(),
+      nestedStruct1.d.toArray() ==
         [0x1122334455667788, -0x1122334455667788])
 
     let nestedStruct2 = a.d[1]
-    XCTAssertEqual(nestedStruct2.a.toArray(), [3, -4])
+    #expect(nestedStruct2.a.toArray() == [3, -4])
-    XCTAssertEqual(nestedStruct2.b, .b)
+    #expect(nestedStruct2.b == .b)
-    XCTAssertEqual(nestedStruct2.c.toArray(), [.b, .a])
+    #expect(nestedStruct2.c.toArray() == [.b, .a])
-    XCTAssertEqual(
+    #expect(
-      nestedStruct2.d.toArray(),
+      nestedStruct2.d.toArray() ==
         [-0x1122334455667788, 0x1122334455667788])
 
-    XCTAssertEqual(a.e, 1)
+    #expect(a.e == 1)
-    XCTAssertEqual(a.f.count, 2)
+    #expect(a.f.count == 2)
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
   func verifyMutations(in table: MyGame_Example_ArrayTable) {
     let a = table.mutableA!
-    XCTAssertEqual(a.a, 12.34)
+    #expect(a.a == 12.34)
-    XCTAssertEqual(a.b.count, 15)
+    #expect(a.b.count == 15)
     var sum: Int32 = 0
     for i in a.b.startIndex..<a.b.endIndex {
       sum += a.b[i]
     }
-    XCTAssertEqual(sum, 120)
+    #expect(sum == 120)
-    XCTAssertEqual(a.c, -127)
+    #expect(a.c == -127)
-    XCTAssertEqual(a.d.count, 2)
+    #expect(a.d.count == 2)
     let nestedStruct1 = a.d[0]
 
-    XCTAssertEqual(nestedStruct1.a.reduce(0) { $0 + $1 }, 1)
+    #expect(nestedStruct1.a.reduce(0) { $0 + $1 } == 1)
-    XCTAssertEqual(nestedStruct1.b, .a)
+    #expect(nestedStruct1.b == .a)
-    XCTAssertEqual(nestedStruct1.c[0], .c)
+    #expect(nestedStruct1.c[0] == .c)
-    XCTAssertEqual(nestedStruct1.c[1], .b)
+    #expect(nestedStruct1.c[1] == .b)
 
     let nestedStruct2 = a.d[1]
-    XCTAssertEqual(nestedStruct2.a.reduce(0) { $0 + $1 }, -1)
+    #expect(nestedStruct2.a.reduce(0) { $0 + $1 } == -1)
-    XCTAssertEqual(nestedStruct2.b, .b)
+    #expect(nestedStruct2.b == .b)
-    XCTAssertEqual(nestedStruct2.c[0], .b)
+    #expect(nestedStruct2.c[0] == .b)
-    XCTAssertEqual(nestedStruct2.c[1], .a)
+    #expect(nestedStruct2.c[1] == .a)
-    XCTAssertEqual(nestedStruct2.d[0], -0x1122334455667788)
+    #expect(nestedStruct2.d[0] == -0x1122334455667788)
-    XCTAssertEqual(nestedStruct2.d[1], 0x1122334455667788)
+    #expect(nestedStruct2.d[1] == 0x1122334455667788)
 
-    XCTAssertTrue(a.mutate(b: 1000, at: 0))
+    #expect(a.mutate(b: 1000, at: 0) == true)
-    XCTAssertTrue(a.mutate(b: 2000, at: 1))
+    #expect(a.mutate(b: 2000, at: 1) == true)
 
-    XCTAssertTrue(nestedStruct2.mutate(c: .a, at: 0))
+    #expect(nestedStruct2.mutate(c: .a, at: 0) == true)
-    XCTAssertTrue(nestedStruct2.mutate(c: .b, at: 1))
+    #expect(nestedStruct2.mutate(c: .b, at: 1) == true)
 
-    XCTAssertEqual(nestedStruct2.c[0], .a)
+    #expect(nestedStruct2.c[0] == .a)
-    XCTAssertEqual(nestedStruct2.c[1], .b)
+    #expect(nestedStruct2.c[1] == .b)
 
-    XCTAssertTrue(nestedStruct2.mutate(d: 0, at: 0))
+    #expect(nestedStruct2.mutate(d: 0, at: 0) == true)
-    XCTAssertTrue(nestedStruct2.mutate(d: 0, at: 1))
+    #expect(nestedStruct2.mutate(d: 0, at: 1) == true)
 
-    XCTAssertEqual(nestedStruct2.d.reduce(0) { $0 + $1 }, 0)
+    #expect(nestedStruct2.d.reduce(0) { $0 + $1 } == 0)
 
     let nativeStruct = table.a?.d[1]
 
-    XCTAssertEqual(nativeStruct?.c[0], .a)
+    #expect(nativeStruct?.c[0] == .a)
-    XCTAssertEqual(nativeStruct?.c[1], .b)
+    #expect(nativeStruct?.c[1] == .b)
 
-    XCTAssertEqual(nativeStruct?.d[0], 0)
+    #expect(nativeStruct?.d[0] == 0)
-    XCTAssertEqual(nativeStruct?.d[1], 0)
+    #expect(nativeStruct?.d[1] == 0)
 
-    XCTAssertTrue(a.mutate(b: 1, at: 0))
+    #expect(a.mutate(b: 1, at: 0) == true)
-    XCTAssertTrue(a.mutate(b: 2, at: 1))
+    #expect(a.mutate(b: 2, at: 1) == true)
 
-    XCTAssertTrue(nestedStruct2.mutate(c: .b, at: 0))
+    #expect(nestedStruct2.mutate(c: .b, at: 0) == true)
-    XCTAssertTrue(nestedStruct2.mutate(c: .a, at: 1))
+    #expect(nestedStruct2.mutate(c: .a, at: 1) == true)
 
-    XCTAssertTrue(nestedStruct2.mutate(d: -0x1122334455667788, at: 0))
+    #expect(nestedStruct2.mutate(d: -0x1122334455667788, at: 0) == true)
-    XCTAssertTrue(nestedStruct2.mutate(d: 0x1122334455667788, at: 1))
+    #expect(nestedStruct2.mutate(d: 0x1122334455667788, at: 1) == true)
   }
 
+  @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
   private func createArrayTable() -> [UInt8] {
     var builder = FlatBufferBuilder(initialSize: 1024)
 
@@ -233,4 +246,3 @@ extension InlineArray: @retroactive Equatable where Element: Equatable {
 }
 
 #endif
-

tests/swift/Tests/Flatbuffers/FlatBuffersMonsterWriterTests.swift

@@ -15,7 +15,7 @@
  */
 
 import Foundation
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
@@ -24,8 +24,9 @@ typealias Monster = MyGame_Example_Monster
 typealias Vec3 = MyGame_Example_Vec3
 typealias Stat = MyGame_Example_Stat
 
-class FlatBuffersMonsterWriterTests: XCTestCase {
+struct FlatBuffersMonsterWriterTests {
 
+  @Test
   func testData() {
     // swiftformat:disable all
     let data = Data([
@@ -47,12 +48,13 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readVerifiedMonster(fb: _data)
   }
 
+  @Test
   func testReadFromOtherLanguages() {
     let path = {
       #if os(macOS)
       // Gets the current path of this test file then
       // strips out the nested directories.
-      let filePath = URL(filePath: #file)
+      let filePath = URL(filePath: #filePath)
         .deletingLastPathComponent()
       return filePath.absoluteString
       #else
@@ -71,6 +73,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readVerifiedMonster(fb: _data)
   }
 
+  @Test
   func testCreateMonsterData() {
     let bytes = createMonster(withPrefix: false)
     var buffer = ByteBuffer(data: bytes.data)
@@ -80,30 +83,32 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readMonster(monster: monster)
   }
 
+  @Test(.bug("https://github.com/google/flatbuffers/issues/8642"))
   func testCreateMonsterResetTests() {
     var builder = createMonster(withPrefix: false)
     var buffer = ByteBuffer(data: builder.data)
     let monster: MyGame_Example_Monster = getRoot(byteBuffer: &buffer)
     readMonster(monster: monster)
     builder.clear()
-    XCTAssertEqual(builder.capacity, 1)
+    #expect(builder.capacity == 1)
-    XCTAssertEqual(builder.size, 0)
+    #expect(builder.size == 0)
 
     write(fbb: &builder, prefix: false)
     var _buffer = ByteBuffer(data: builder.data)
-    XCTAssertEqual(_buffer.capacity, 304)
+    #expect(_buffer.capacity == 304)
     let _monster: MyGame_Example_Monster = getRoot(byteBuffer: &_buffer)
     readMonster(monster: _monster)
     builder.clear(keepingCapacity: true)
-    XCTAssertEqual(builder.capacity, 512)
+    #expect(builder.capacity == 512)
-    XCTAssertEqual(builder.size, 0)
+    #expect(builder.size == 0)
   }
 
+  @Test
   func testCreateMonster() {
     let bytes = createMonster(withPrefix: false)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      bytes.sizedByteArray,
+      bytes.sizedByteArray ==
       [
         48, 0, 0, 0, 77, 79, 78, 83, 0, 0, 0, 0, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28,
         0, 0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0,
@@ -127,11 +132,12 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readMonster(monster: monster)
   }
 
+  @Test
   func testCreateMonsterResizedBuffer() {
     let bytes = createMonster(withPrefix: false)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      bytes.sizedByteArray,
+      bytes.sizedByteArray ==
       [
         48, 0, 0, 0, 77, 79, 78, 83, 0, 0, 0, 0, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28,
         0, 0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0,
@@ -150,11 +156,12 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readVerifiedMonster(fb: bytes.sizedBuffer)
   }
 
+  @Test
   func testCreateMonsterPrefixed() {
     let bytes = createMonster(withPrefix: true)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      bytes.sizedByteArray,
+      bytes.sizedByteArray ==
       [
         44, 1, 0, 0, 44, 0, 0, 0, 77, 79, 78, 83, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28,
         0, 0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0,
@@ -175,6 +182,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readMonster(monster: getPrefixedSizeRoot(byteBuffer: &buffer))
   }
 
+  @Test
   func testCreateMonsterUsingCreateMonsterMethodWithNilPos() {
     var fbb = FlatBufferBuilder(initialSize: 1)
     let name = fbb.create(string: "Frodo")
@@ -184,10 +192,11 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     fbb.finish(offset: root)
     var buffer = fbb.sizedBuffer
     let newMonster: Monster = getRoot(byteBuffer: &buffer)
-    XCTAssertNil(newMonster.pos)
+    #expect(newMonster.pos == nil)
-    XCTAssertEqual(newMonster.name, "Frodo")
+    #expect(newMonster.name == "Frodo")
   }
 
+  @Test
   func testCreateMonsterUsingCreateMonsterMethodWithPosX() {
     var fbb = FlatBufferBuilder(initialSize: 1)
     let name = fbb.create(string: "Barney")
@@ -207,10 +216,11 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
 
     var buffer = fbb.sizedBuffer
     let newMonster: Monster = getRoot(byteBuffer: &buffer)
-    XCTAssertEqual(newMonster.pos!.x, 10)
+    #expect(newMonster.pos!.x == 10)
-    XCTAssertEqual(newMonster.name, "Barney")
+    #expect(newMonster.name == "Barney")
   }
 
+  @Test
   func testReadMonsterFromUnsafePointerWithoutCopying() {
     // swiftformat:disable all
     var array: [UInt8] = [
@@ -242,6 +252,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readObjectApi(monster: unpacked)
   }
 
+  @Test
   func testArrayOfBools() {
     let boolArray = [false, true, false, true, false, true, false]
     var fbb = FlatBufferBuilder(initialSize: 1)
@@ -257,37 +268,41 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     let monster: Monster = getRoot(byteBuffer: &buffer)
     let values = monster.testarrayofbools
 
-    XCTAssertEqual(boolArray.count, values.count)
+    #expect(boolArray.count == values.count)
 
     for (index, bool) in monster.testarrayofbools.enumerated() {
-      XCTAssertEqual(bool, boolArray[index])
+      #expect(bool == boolArray[index])
     }
   }
 
   func readVerifiedMonster(fb: ByteBuffer) {
     var byteBuffer = fb
-    XCTAssertNoThrow(
+    do {
       try readMonster(
         monster: getCheckedRoot(
-          byteBuffer: &byteBuffer) as MyGame_Example_Monster))
+          byteBuffer: &byteBuffer) as MyGame_Example_Monster)
+    } catch {
+      Issue.record(error)
+    }
   }
 
+  @Test(.bug("https://github.com/google/flatbuffers/issues/8133"))
   func testUnalignedRead() {
     // Aligned read
     let fbb = createMonster(withPrefix: false)
     let testAligned: () -> Bool = {
       var buffer = fbb.sizedBuffer
       var monster: Monster = getRoot(byteBuffer: &buffer)
-      self.readFlatbufferMonster(monster: &monster)
+      readFlatbufferMonster(monster: &monster)
       return true
     }
-    XCTAssertEqual(testAligned(), true)
+    #expect(testAligned() == true)
     let testUnaligned: () -> Bool = {
       var bytes: [UInt8] = [0x00]
       bytes.append(contentsOf: fbb.sizedByteArray)
       return bytes.withUnsafeMutableBytes { ptr in
         guard var baseAddress = ptr.baseAddress else {
-          XCTFail("Base pointer is not defined")
+          Issue.record("Base pointer is not defined")
           return false
         }
         baseAddress = baseAddress.advanced(by: 1)
@@ -296,13 +311,14 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
           assumingMemoryBound: unlignedPtr,
           capacity: ptr.count - 1)
         var monster: Monster = getRoot(byteBuffer: &bytes)
-        self.readFlatbufferMonster(monster: &monster)
+        readFlatbufferMonster(monster: &monster)
         return true
       }
     }
-    XCTAssertEqual(testUnaligned(), true)
+    #expect(testUnaligned() == true)
   }
 
+  @Test
   func testReadingRemovedSizeUnalignedBuffer() {
     // Aligned read
     let fbb = createMonster(withPrefix: true)
@@ -311,7 +327,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
       bytes.append(contentsOf: fbb.sizedByteArray)
       return bytes.withUnsafeMutableBytes { ptr in
         guard var baseAddress = ptr.baseAddress else {
-          XCTFail("Base pointer is not defined")
+          Issue.record("Base pointer is not defined")
           return false
         }
         baseAddress = baseAddress.advanced(by: 1)
@@ -321,32 +337,34 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
           capacity: ptr.count - 1)
         var newBuf = FlatBuffersUtils.removeSizePrefix(bb: bytes)
         var monster: Monster = getRoot(byteBuffer: &newBuf)
-        self.readFlatbufferMonster(monster: &monster)
+        readFlatbufferMonster(monster: &monster)
         return true
       }
     }
-    XCTAssertEqual(testUnaligned(), true)
+    #expect(testUnaligned() == true)
   }
 
+  @Test
   func testCreateMessage() {
     let fbb = createMonster(withPrefix: false)
     let byteBuffer = fbb.buffer
-    let firstMessage = Message<Monster>(byteBuffer: byteBuffer)
+    let firstMessage = GRPCMessage<Monster>(byteBuffer: byteBuffer)
     firstMessage.withUnsafeReadableBytes { ptr in
       var bytes = ByteBuffer(contiguousBytes: ptr, count: ptr.count)
       var monster: Monster = getRoot(byteBuffer: &bytes)
-      self.readFlatbufferMonster(monster: &monster)
+      readFlatbufferMonster(monster: &monster)
     }
 
     let secondByteBuffer = fbb.sizedBuffer
-    let secondMessage = Message<Monster>(byteBuffer: secondByteBuffer)
+    let secondMessage = GRPCMessage<Monster>(byteBuffer: secondByteBuffer)
     secondMessage.withUnsafeReadableBytes { ptr in
       var bytes = ByteBuffer(contiguousBytes: ptr, count: ptr.count)
       var monster: Monster = getRoot(byteBuffer: &bytes)
-      self.readFlatbufferMonster(monster: &monster)
+      readFlatbufferMonster(monster: &monster)
     }
   }
 
+  @Test
   func testForceRetainedObject() {
     let byteBuffer = {
       // swiftformat:disable all
@@ -452,95 +470,95 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     var fb = fb
 
     let monster: Monster = getRoot(byteBuffer: &fb)
-    XCTAssertFalse(monster.mutate(mana: 10))
+    #expect(monster.mutate(mana: 10) == false)
-    XCTAssertEqual(monster.testarrayoftables[0].name, "Barney")
+    #expect(monster.testarrayoftables[0].name == "Barney")
-    XCTAssertEqual(monster.testarrayoftables[1].name, "Frodo")
+    #expect(monster.testarrayoftables[1].name == "Frodo")
-    XCTAssertEqual(monster.testarrayoftables[2].name, "Wilma")
+    #expect(monster.testarrayoftables[2].name == "Wilma")
 
     // Example of searching for a table by the key
-    XCTAssertNotNil(monster.testarrayoftablesBy(key: "Frodo"))
+    #expect(monster.testarrayoftablesBy(key: "Frodo") != nil)
-    XCTAssertNotNil(monster.testarrayoftablesBy(key: "Barney"))
+    #expect(monster.testarrayoftablesBy(key: "Barney") != nil)
-    XCTAssertNotNil(monster.testarrayoftablesBy(key: "Wilma"))
+    #expect(monster.testarrayoftablesBy(key: "Wilma") != nil)
 
-    XCTAssertEqual(monster.testType, .monster)
+    #expect(monster.testType == .monster)
 
-    XCTAssertEqual(monster.mutate(inventory: 1, at: 0), true)
+    #expect(monster.mutate(inventory: 1, at: 0) == true)
-    XCTAssertEqual(monster.mutate(inventory: 2, at: 1), true)
+    #expect(monster.mutate(inventory: 2, at: 1) == true)
-    XCTAssertEqual(monster.mutate(inventory: 3, at: 2), true)
+    #expect(monster.mutate(inventory: 3, at: 2) == true)
-    XCTAssertEqual(monster.mutate(inventory: 4, at: 3), true)
+    #expect(monster.mutate(inventory: 4, at: 3) == true)
-    XCTAssertEqual(monster.mutate(inventory: 5, at: 4), true)
+    #expect(monster.mutate(inventory: 5, at: 4) == true)
 
     for i in 0..<monster.inventory.count {
-      XCTAssertEqual(monster.inventory[i], Byte(i + 1))
+      #expect(monster.inventory[i] == Byte(i + 1))
     }
 
-    XCTAssertEqual(monster.mutate(inventory: 0, at: 0), true)
+    #expect(monster.mutate(inventory: 0, at: 0) == true)
-    XCTAssertEqual(monster.mutate(inventory: 1, at: 1), true)
+    #expect(monster.mutate(inventory: 1, at: 1) == true)
-    XCTAssertEqual(monster.mutate(inventory: 2, at: 2), true)
+    #expect(monster.mutate(inventory: 2, at: 2) == true)
-    XCTAssertEqual(monster.mutate(inventory: 3, at: 3), true)
+    #expect(monster.mutate(inventory: 3, at: 3) == true)
-    XCTAssertEqual(monster.mutate(inventory: 4, at: 4), true)
+    #expect(monster.mutate(inventory: 4, at: 4) == true)
 
     let vec = monster.mutablePos
-    XCTAssertEqual(vec?.x, 1)
+    #expect(vec?.x == 1)
-    XCTAssertTrue(vec?.mutate(x: 55.0) ?? false)
+    #expect(vec?.mutate(x: 55.0) == true)
-    XCTAssertTrue(vec?.mutate(test1: 55) ?? false)
+    #expect(vec?.mutate(test1: 55) == true)
-    XCTAssertEqual(vec?.x, 55.0)
+    #expect(vec?.x == 55.0)
-    XCTAssertEqual(vec?.test1, 55.0)
+    #expect(vec?.test1 == 55.0)
-    XCTAssertTrue(vec?.mutate(x: 1) ?? false)
+    #expect(vec?.mutate(x: 1) == true)
-    XCTAssertEqual(vec?.x, 1)
+    #expect(vec?.x == 1)
-    XCTAssertTrue(vec?.mutate(test1: 3) ?? false)
+    #expect(vec?.mutate(test1: 3) == true)
 
     let mutableTest4 = monster.mutableTest4
     let orignalValues = mutableTest4[0].a
-    XCTAssertEqual(mutableTest4[0].mutate(a: 100), true)
+    #expect(mutableTest4[0].mutate(a: 100) == true)
-    XCTAssertNotEqual(monster.test4[0].a, orignalValues)
+    #expect(monster.test4[0].a != orignalValues)
-    XCTAssertEqual(monster.test4[0].a, 100)
+    #expect(monster.test4[0].a == 100)
-    XCTAssertEqual(mutableTest4[0].mutate(a: orignalValues), true)
+    #expect(mutableTest4[0].mutate(a: orignalValues) == true)
   }
 
   func readFlatbufferMonster(monster: inout MyGame_Example_Monster) {
-    XCTAssertEqual(monster.hp, 80)
+    #expect(monster.hp == 80)
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
-    XCTAssertEqual(monster.name, "MyMonster")
+    #expect(monster.name == "MyMonster")
     let pos = monster.pos
-    XCTAssertEqual(pos?.x, 1)
+    #expect(pos?.x == 1)
-    XCTAssertEqual(pos?.y, 2)
+    #expect(pos?.y == 2)
-    XCTAssertEqual(pos?.z, 3)
+    #expect(pos?.z == 3)
-    XCTAssertEqual(pos?.test1, 3)
+    #expect(pos?.test1 == 3)
-    XCTAssertEqual(pos?.test2, .green)
+    #expect(pos?.test2 == .green)
     let test = pos?.test3
-    XCTAssertEqual(test?.a, 5)
+    #expect(test?.a == 5)
-    XCTAssertEqual(test?.b, 6)
+    #expect(test?.b == 6)
-    XCTAssertEqual(monster.testType, .monster)
+    #expect(monster.testType == .monster)
     let monster2 = monster.test(type: Monster.self)
-    XCTAssertEqual(monster2?.name, "Fred")
+    #expect(monster2?.name == "Fred")
 
-    XCTAssertEqual(monster.mutate(mana: 10), false)
+    #expect(monster.mutate(mana: 10) == false)
 
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
-    XCTAssertEqual(monster.inventory.count, 5)
+    #expect(monster.inventory.count == 5)
     var sum: Byte = 0
     for inventory in monster.inventory {
       sum += inventory
     }
-    XCTAssertEqual(sum, 10)
+    #expect(sum == 10)
 
     monster.withUnsafePointerToInventory { ptr, count in
       var sum: UInt8 = 0
       for pointee in ptr.startIndex..<ptr.endIndex {
         sum += ptr[pointee]
       }
-      XCTAssertEqual(sum, 10)
+      #expect(sum == 10)
     }
 
-    XCTAssertEqual(monster.test4.count, 2)
+    #expect(monster.test4.count == 2)
 
     let test4 = monster.test4
     var sum0 = 0
     for test0 in test4 {
       sum0 += Int(test0.a) + Int(test0.b)
     }
-    XCTAssertEqual(sum0, 100)
+    #expect(sum0 == 100)
 
     monster.withUnsafePointerToTest4 { ptr, count in
       guard let ptr = ptr.baseAddress else { return }
@@ -556,7 +574,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
         pointerSum += Int(bindedMemory[pointee].a) +
           Int(bindedMemory[pointee].b)
       }
-      XCTAssertEqual(pointerSum, 100)
+      #expect(pointerSum == 100)
     }
 
     let mutableTest4 = monster.mutableTest4
@@ -564,64 +582,64 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     for test0 in mutableTest4 {
       sum2 += Int(test0.a) + Int(test0.b)
     }
-    XCTAssertEqual(sum2, 100)
+    #expect(sum2 == 100)
 
     let stringArray = monster.testarrayofstring
-    XCTAssertEqual(stringArray.count, 2)
+    #expect(stringArray.count == 2)
-    XCTAssertEqual(stringArray[0], "test1")
+    #expect(stringArray[0] == "test1")
-    XCTAssertEqual(stringArray[1], "test2")
+    #expect(stringArray[1] == "test2")
-    XCTAssertEqual(monster.testbool, true)
+    #expect(monster.testbool == true)
 
     let array = monster.nameSegmentArray
-    XCTAssertEqual(String(bytes: array ?? [], encoding: .utf8), "MyMonster")
+    #expect(String(bytes: array ?? [], encoding: .utf8) == "MyMonster")
 
     if 0 == monster.testarrayofbools.count {
-      XCTAssertEqual(monster.testarrayofbools.isEmpty, true)
+      #expect(monster.testarrayofbools.isEmpty == true)
     } else {
-      XCTAssertEqual(monster.testarrayofbools.isEmpty, false)
+      #expect(monster.testarrayofbools.isEmpty == false)
     }
   }
 
   func readObjectApi(monster: MyGame_Example_MonsterT) {
-    XCTAssertEqual(monster.hp, 80)
+    #expect(monster.hp == 80)
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
-    XCTAssertEqual(monster.name, "MyMonster")
+    #expect(monster.name == "MyMonster")
     let pos = monster.pos
-    XCTAssertEqual(pos?.x, 1)
+    #expect(pos?.x == 1)
-    XCTAssertEqual(pos?.y, 2)
+    #expect(pos?.y == 2)
-    XCTAssertEqual(pos?.z, 3)
+    #expect(pos?.z == 3)
-    XCTAssertEqual(pos?.test1, 3)
+    #expect(pos?.test1 == 3)
-    XCTAssertEqual(pos?.test2, .green)
+    #expect(pos?.test2 == .green)
     let test = pos?.test3
-    XCTAssertEqual(test?.a, 5)
+    #expect(test?.a == 5)
-    XCTAssertEqual(test?.b, 6)
+    #expect(test?.b == 6)
     let monster2 = monster.test?.value as? MyGame_Example_MonsterT
-    XCTAssertEqual(monster2?.name, "Fred")
+    #expect(monster2?.name == "Fred")
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
     monster.mana = 10
-    XCTAssertEqual(monster.mana, 10)
+    #expect(monster.mana == 10)
     monster.mana = 150
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
 
-    XCTAssertEqual(monster.inventory.count, 5)
+    #expect(monster.inventory.count == 5)
     var sum: Byte = 0
     for i in monster.inventory {
       sum += i
     }
-    XCTAssertEqual(sum, 10)
+    #expect(sum == 10)
-    XCTAssertEqual(monster.test4.count, 2)
+    #expect(monster.test4.count == 2)
     var sum0 = 0
     for test in monster.test4 {
       sum0 += Int(test.a) + Int(test.b)
     }
-    XCTAssertEqual(sum0, 100)
+    #expect(sum0 == 100)
-    XCTAssertEqual(monster.testbool, true)
+    #expect(monster.testbool == true)
   }
 
-  func testEncoding() {
+  @Test
+  func testEncoding() throws {
     let fbb = createMonster(withPrefix: false)
     var sizedBuffer = fbb.sizedBuffer
-    do {
     struct Test: Decodable {
       struct Pos: Decodable {
         let x, y, z: Int
@@ -638,13 +656,10 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     let decoder = JSONDecoder()
     decoder.keyDecodingStrategy = .convertFromSnakeCase
     let value = try decoder.decode(Test.self, from: data)
-      XCTAssertEqual(value.name, "MyMonster")
+    #expect(value.name == "MyMonster")
-      XCTAssertEqual(value.pos.x, 1)
+    #expect(value.pos.x == 1)
-      XCTAssertEqual(value.pos.y, 2)
+    #expect(value.pos.y == 2)
-      XCTAssertEqual(value.pos.z, 3)
+    #expect(value.pos.z == 3)
-    } catch {
-      XCTFail(error.localizedDescription)
-    }
   }
 
   var jsonData: String {
@@ -653,6 +668,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     """
   }
 
+  @Test
   func testContiguousBytes() {
     let byteArray: [UInt8] = [3, 1, 4, 1, 5, 9]
     var fbb = FlatBufferBuilder(initialSize: 1)
@@ -670,7 +686,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     monster.withUnsafePointerToInventory { ptr, count in
       let array = Array(ptr)
       for (index, value) in values.enumerated() {
-        XCTAssertEqual(array[index], value)
+        #expect(array[index] == value)
       }
     }
   }

tests/swift/Tests/Flatbuffers/FlatBuffersNanInfTests.swift

@@ -14,43 +14,33 @@
  * limitations under the License.
  */
 
-import XCTest
+import Foundation
+import Testing
 
 @testable import FlatBuffers
 
-final class FlatBuffersNanInfTests: XCTestCase {
+struct FlatBuffersNanInfTests {
-
-  func createTestTable() -> FlatBufferBuilder {
-    var fbb = FlatBufferBuilder()
-    let msg = Swift_Tests_NanInfTable.createNanInfTable(
-      &fbb,
-      valueNan: .nan,
-      valueInf: .infinity,
-      valueNinf: -.infinity,
-      value: 100.0)
-    fbb.finish(offset: msg)
-    return fbb
-  }
 
+  @Test
   func testInfNanBinary() {
     let fbb = createTestTable()
     let data = fbb.sizedByteArray
 
     var buffer = ByteBuffer(bytes: data)
     let table: Swift_Tests_NanInfTable = getRoot(byteBuffer: &buffer)
-    XCTAssert(table.defaultNan.isNaN)
+    #expect(table.defaultNan.isNaN)
-    XCTAssertEqual(table.defaultInf, .infinity)
+    #expect(table.defaultInf == .infinity)
-    XCTAssertEqual(table.defaultNinf, -.infinity)
+    #expect(table.defaultNinf == -.infinity)
-    XCTAssert(table.valueNan.isNaN)
+    #expect(table.valueNan.isNaN)
-    XCTAssertEqual(table.valueInf, .infinity)
+    #expect(table.valueInf == .infinity)
-    XCTAssertEqual(table.valueNinf, -.infinity)
+    #expect(table.valueNinf == -.infinity)
-    XCTAssertEqual(table.value, 100.0)
+    #expect(table.value == 100.0)
   }
 
-  func testInfNanJSON() {
+  @Test
+  func testInfNanJSON() throws {
     let fbb = createTestTable()
     var bb = fbb.sizedBuffer
-    do {
     struct Test: Decodable {
       let valueInf: Double
       let value: Int
@@ -73,12 +63,20 @@ final class FlatBuffersNanInfTests: XCTestCase {
       nan: "nan")
     decoder.keyDecodingStrategy = .convertFromSnakeCase
     let value = try decoder.decode(Test.self, from: data)
-      XCTAssertEqual(value.value, 100)
+    #expect(value.value == 100)
-      XCTAssertEqual(value.valueInf, .infinity)
+    #expect(value.valueInf == .infinity)
-      XCTAssertEqual(value.valueNinf, -.infinity)
+    #expect(value.valueNinf == -.infinity)
-    } catch {
-      XCTFail(error.localizedDescription)
-    }
   }
 
+  func createTestTable() -> FlatBufferBuilder {
+    var fbb = FlatBufferBuilder()
+    let msg = Swift_Tests_NanInfTable.createNanInfTable(
+      &fbb,
+      valueNan: .nan,
+      valueInf: .infinity,
+      valueNinf: -.infinity,
+      value: 100.0)
+    fbb.finish(offset: msg)
+    return fbb
+  }
 }

tests/swift/Tests/Flatbuffers/FlatBuffersStructsTests.swift

@@ -14,12 +14,13 @@
  * limitations under the License.
  */
 
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
-final class FlatBuffersStructsTests: XCTestCase {
+struct FlatBuffersStructsTests {
 
+  @Test
   func testWritingAndMutatingBools() {
     var fbb = FlatBufferBuilder()
     let start = TestMutatingBool.startTestMutatingBool(&fbb)
@@ -30,11 +31,11 @@ final class FlatBuffersStructsTests: XCTestCase {
     var buffer = fbb.sizedBuffer
     let testMutatingBool: TestMutatingBool = getRoot(byteBuffer: &buffer)
     let property = testMutatingBool.mutableB
-    XCTAssertEqual(property?.property, false)
+    #expect(property?.property == false)
     property?.mutate(property: false)
-    XCTAssertEqual(property?.property, false)
+    #expect(property?.property == false)
     property?.mutate(property: true)
-    XCTAssertEqual(property?.property, true)
+    #expect(property?.property == true)
   }
 
 }

tests/swift/Tests/Flatbuffers/FlatBuffersTests.swift

@@ -14,44 +14,49 @@
  * limitations under the License.
  */
 
-import XCTest
+import Testing
 
 @testable import Common
 @testable import FlatBuffers
 
-final class FlatBuffersTests: XCTestCase {
+struct FlatBuffersTests {
 
   let country = "Norway"
 
-  func testEndian() { XCTAssertEqual(isLitteEndian, true) }
+  @Test
+  func testEndian() { #expect(isLitteEndian == true) }
 
+  @Test
   func testOffset() {
     let o = Offset()
     let b = Offset(offset: 1)
-    XCTAssertEqual(o.isEmpty, true)
+    #expect(o.isEmpty == true)
-    XCTAssertEqual(b.isEmpty, false)
+    #expect(b.isEmpty == false)
   }
 
+  @Test
   func testCreateString() {
     let helloWorld = "Hello, world!"
     var b = FlatBufferBuilder(initialSize: 16)
-    XCTAssertEqual(b.create(string: country).o, 12)
+    #expect(b.create(string: country).o == 12)
-    XCTAssertEqual(b.create(string: helloWorld).o, 32)
+    #expect(b.create(string: helloWorld).o == 32)
     b.clear()
-    XCTAssertEqual(b.create(string: helloWorld).o, 20)
+    #expect(b.create(string: helloWorld).o == 20)
-    XCTAssertEqual(b.create(string: country).o, 32)
+    #expect(b.create(string: country).o == 32)
     b.clear()
-    XCTAssertEqual(b.create(string: String(repeating: "a", count: 257)).o, 264)
+    #expect(b.create(string: String(repeating: "a", count: 257)).o == 264)
   }
 
+  @Test
   func testStartTable() {
     var b = FlatBufferBuilder(initialSize: 16)
-    XCTAssertNoThrow(b.startTable(with: 0))
+    _ = b.startTable(with: 0)
     b.clear()
-    XCTAssertEqual(b.create(string: country).o, 12)
+    #expect(b.create(string: country).o == 12)
-    XCTAssertEqual(b.startTable(with: 0), 12)
+    #expect(b.startTable(with: 0) == 12)
   }
 
+  @Test
   func testCreateFinish() {
     var b = FlatBufferBuilder(initialSize: 16)
     let countryOff = Country.createCountry(
@@ -66,9 +71,10 @@ final class FlatBuffersTests: XCTestCase {
       200, 0, 0, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0,
     ]
     // swiftformat:enable all
-    XCTAssertEqual(b.sizedByteArray, v)
+    #expect(b.sizedByteArray == v)
   }
 
+  @Test
   func testCreateFinishWithPrefix() {
     var b = FlatBufferBuilder(initialSize: 16)
     let countryOff = Country.createCountry(
@@ -83,9 +89,10 @@ final class FlatBuffersTests: XCTestCase {
       100, 0, 0, 0, 200, 0, 0, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0,
     ]
     // swiftformat:enable all
-    XCTAssertEqual(b.sizedByteArray, v)
+    #expect(b.sizedByteArray == v)
   }
 
+  @Test
   func testReadCountry() {
     // swiftformat:disable all
     let v: [UInt8] = [
@@ -95,18 +102,20 @@ final class FlatBuffersTests: XCTestCase {
     // swiftformat:enable all
     let buffer = ByteBuffer(bytes: v)
     let c = Country.getRootAsCountry(buffer)
-    XCTAssertEqual(c.lan, 100)
+    #expect(c.lan == 100)
-    XCTAssertEqual(c.log, 200)
+    #expect(c.log == 200)
-    XCTAssertEqual(c.nameVector, [78, 111, 114, 119, 97, 121])
+    #expect(c.nameVector == [78, 111, 114, 119, 97, 121])
-    XCTAssertEqual(c.name, country)
+    #expect(c.name == country)
   }
 
+  @Test
   func testWriteNullableStrings() {
     var b = FlatBufferBuilder()
-    XCTAssertTrue(b.create(string: nil).isEmpty)
+    #expect(b.create(string: nil).isEmpty)
-    XCTAssertTrue(b.createShared(string: nil).isEmpty)
+    #expect(b.createShared(string: nil).isEmpty)
   }
 
+  @Test
   func testWriteOptionalValues() {
     var b = FlatBufferBuilder()
     let root = optional_scalars_ScalarStuff.createScalarStuff(
@@ -121,16 +130,17 @@ final class FlatBuffersTests: XCTestCase {
     b.finish(offset: root)
     var buffer = b.sizedBuffer
     let scalarTable: optional_scalars_ScalarStuff = getRoot(byteBuffer: &buffer)
-    XCTAssertEqual(scalarTable.justI8, 80)
+    #expect(scalarTable.justI8 == 80)
-    XCTAssertNil(scalarTable.maybeI8)
+    #expect(scalarTable.maybeI8 == nil)
-    XCTAssertEqual(scalarTable.maybeBool, true)
+    #expect(scalarTable.maybeBool == true)
-    XCTAssertEqual(scalarTable.defaultI8, 42)
+    #expect(scalarTable.defaultI8 == 42)
-    XCTAssertEqual(scalarTable.justU8, 100)
+    #expect(scalarTable.justU8 == 100)
-    XCTAssertEqual(scalarTable.maybeU8, 10)
+    #expect(scalarTable.maybeU8 == 10)
-    XCTAssertEqual(scalarTable.justEnum, .one)
+    #expect(scalarTable.justEnum == .one)
-    XCTAssertNil(scalarTable.maybeEnum)
+    #expect(scalarTable.maybeEnum == nil)
   }
 
+  @Test
   func testAlignmentCrash() {
     var builder = FlatBufferBuilder(initialSize: 256)
 

tests/swift/Tests/Flatbuffers/FlatBuffersUnionTests.swift

@@ -14,12 +14,14 @@
  * limitations under the License.
  */
 
-import XCTest
+import Foundation
+import Testing
 
 @testable import FlatBuffers
 
-final class FlatBuffersUnionTests: XCTestCase {
+struct FlatBuffersUnionTests {
 
+  @Test
   func testCreateMonstor() {
 
     var b = FlatBufferBuilder(initialSize: 20)
@@ -36,8 +38,8 @@ final class FlatBuffersUnionTests: XCTestCase {
     b.finish(offset: root)
     let buffer = b.sizedByteArray
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      buffer,
+      buffer ==
       [
         16, 0, 0, 0, 0, 0, 10, 0, 16, 0, 8, 0, 7, 0, 12, 0, 10, 0, 0, 0, 0, 0, 0, 1, 8, 0, 0, 0, 20,
         0, 0, 0, 1, 0, 0, 0, 12, 0, 0, 0, 8, 0, 12, 0, 8, 0, 6, 0, 8, 0, 0, 0, 0, 0, 5, 0, 4, 0, 0,
@@ -45,15 +47,16 @@ final class FlatBuffersUnionTests: XCTestCase {
       ])
     // swiftformat:enable all
     let monster = LocalMonster.getRootAsMonster(bb: ByteBuffer(bytes: buffer))
-    XCTAssertEqual(monster.weapon(at: 0)?.dmg, dmg)
+    #expect(monster.weapon(at: 0)?.dmg == dmg)
-    XCTAssertEqual(monster.weapon(at: 0)?.name, str)
+    #expect(monster.weapon(at: 0)?.name == str)
-    XCTAssertEqual(monster.weapon(at: 0)?.nameVector, [65, 120, 101])
+    #expect(monster.weapon(at: 0)?.nameVector == [65, 120, 101])
     let p: Weapon? = monster.equiped()
-    XCTAssertEqual(p?.dmg, dmg)
+    #expect(p?.dmg == dmg)
-    XCTAssertEqual(p?.name, str)
+    #expect(p?.name == str)
-    XCTAssertEqual(p?.nameVector, [65, 120, 101])
+    #expect(p?.nameVector == [65, 120, 101])
   }
 
+  @Test
   func testEndTableFinish() {
     var builder = FlatBufferBuilder(initialSize: 20)
     let sword = builder.create(string: "Sword")
@@ -84,8 +87,8 @@ final class FlatBuffersUnionTests: XCTestCase {
       path: path)
     builder.finish(offset: orc)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      builder.sizedByteArray,
+      builder.sizedByteArray ==
       [
         32, 0, 0, 0, 0, 0, 26, 0, 48, 0, 36, 0, 0, 0, 34, 0, 28, 0, 0, 0, 24, 0, 23, 0, 16, 0, 15,
         0, 8, 0, 4, 0, 26, 0, 0, 0, 44, 0, 0, 0, 104, 0, 0, 0, 0, 0, 0, 1, 60, 0, 0, 0, 0, 0, 0, 0,
@@ -99,6 +102,7 @@ final class FlatBuffersUnionTests: XCTestCase {
     // swiftformat:enable all
   }
 
+  @Test
   func testEnumVector() {
     let vectorOfEnums: [ColorsNameSpace.RGB] = [.blue, .green]
 
@@ -109,8 +113,8 @@ final class FlatBuffersUnionTests: XCTestCase {
     let end = ColorsNameSpace.Monster.endMonster(&builder, start: start)
     builder.finish(offset: end)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      builder.sizedByteArray,
+      builder.sizedByteArray ==
       [
         12, 0, 0, 0, 0, 0, 6, 0, 8, 0, 4, 0, 6, 0, 0, 0, 4, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 1, 0,
         0, 0,
@@ -118,12 +122,13 @@ final class FlatBuffersUnionTests: XCTestCase {
     // swiftformat:enable all
     let monster = ColorsNameSpace.Monster
       .getRootAsMonster(bb: builder.sizedBuffer)
-    XCTAssertEqual(monster.colorsCount, 2)
+    #expect(monster.colorsCount == 2)
     let colors = monster.colors
-    XCTAssertEqual(colors[0], .blue)
+    #expect(colors[0] == .blue)
-    XCTAssertEqual(colors[1], .green)
+    #expect(colors[1] == .green)
   }
 
+  @Test
   func testUnionVector() {
     var fb = FlatBufferBuilder()
 
@@ -149,29 +154,29 @@ final class FlatBuffersUnionTests: XCTestCase {
 
     var buffer = fb.sizedBuffer
     let movie: Movie = getRoot(byteBuffer: &buffer)
-    XCTAssertEqual(movie.charactersType.count, characterType.count)
+    #expect(movie.charactersType.count == characterType.count)
-    XCTAssertEqual(movie.characters.count, characters.count)
+    #expect(movie.characters.count == characters.count)
 
     let bufferCharactersType = movie.charactersType
     for (index, element) in bufferCharactersType.enumerated() {
-      XCTAssertEqual(element, characterType[index])
+      #expect(element == characterType[index])
     }
 
-    XCTAssertEqual(
+    #expect(
-      movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead,
+      movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead ==
         7)
-    XCTAssertEqual(
+    #expect(
-      movie.characters(at: 1, type: Attacker.self)?.swordAttackDamage,
+      movie.characters(at: 1, type: Attacker.self)?.swordAttackDamage ==
         swordDmg)
-    XCTAssertEqual(
+    #expect(
-      movie.characters(at: 2, type: BookReader_Mutable.self)?.booksRead,
+      movie.characters(at: 2, type: BookReader_Mutable.self)?.booksRead ==
         2)
 
     var objc: MovieT? = movie.unpack()
-    XCTAssertEqual(
+    #expect(
-      movie.charactersType.count, objc?.characters.count ?? 0)
+      movie.charactersType.count == objc?.characters.count ?? 0)
-    XCTAssertEqual(
+    #expect(
-      movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead,
+      movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead ==
         (objc?.characters[0]?.value as? BookReader)?.booksRead)
     fb.clear()
     let newMovie = Movie.pack(&fb, obj: &objc)
@@ -180,17 +185,18 @@ final class FlatBuffersUnionTests: XCTestCase {
     var _buffer = fb.sizedBuffer
     let packedMovie: Movie = getRoot(byteBuffer: &_buffer)
 
-    XCTAssertEqual(
+    #expect(
-      packedMovie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead,
+      packedMovie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead ==
         movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead)
-    XCTAssertEqual(
+    #expect(
-      packedMovie.characters(at: 1, type: Attacker.self)?.swordAttackDamage,
+      packedMovie.characters(at: 1, type: Attacker.self)?.swordAttackDamage ==
         movie.characters(at: 1, type: Attacker.self)?.swordAttackDamage)
-    XCTAssertEqual(
+    #expect(
-      packedMovie.characters(at: 2, type: BookReader_Mutable.self)?.booksRead,
+      packedMovie.characters(at: 2, type: BookReader_Mutable.self)?.booksRead ==
         movie.characters(at: 2, type: BookReader_Mutable.self)?.booksRead)
   }
 
+  @Test
   func testStringUnion() {
     let string = "Awesome \\\\t\t\nstring!"
     var fb = FlatBufferBuilder()
@@ -214,30 +220,31 @@ final class FlatBuffersUnionTests: XCTestCase {
 
     var buffer = fb.sizedBuffer
     let movie: Movie = getRoot(byteBuffer: &buffer)
-    XCTAssertEqual(movie.mainCharacter(type: String.self), string)
+    #expect(movie.mainCharacter(type: String.self) == string)
-    XCTAssertEqual(
+    #expect(
-      movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead,
+      movie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead ==
         7)
-    XCTAssertEqual(movie.characters(at: 1, type: String.self), string)
+    #expect(movie.characters(at: 1, type: String.self) == string)
 
     var objc: MovieT? = movie.unpack()
-    XCTAssertEqual(objc?.mainCharacter?.value as? String, string)
+    #expect(objc?.mainCharacter?.value as? String == string)
-    XCTAssertEqual((objc?.characters[0]?.value as? BookReader)?.booksRead, 7)
+    #expect((objc?.characters[0]?.value as? BookReader)?.booksRead == 7)
-    XCTAssertEqual(objc?.characters[1]?.value as? String, string)
+    #expect(objc?.characters[1]?.value as? String == string)
     fb.clear()
     let newMovie = Movie.pack(&fb, obj: &objc)
     fb.finish(offset: newMovie)
 
     var _buffer = fb.sizedBuffer
     let packedMovie: Movie = getRoot(byteBuffer: &_buffer)
-    XCTAssertEqual(packedMovie.mainCharacter(type: String.self), string)
+    #expect(packedMovie.mainCharacter(type: String.self) == string)
-    XCTAssertEqual(
+    #expect(
-      packedMovie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead,
+      packedMovie.characters(at: 0, type: BookReader_Mutable.self)?.booksRead ==
         7)
-    XCTAssertEqual(packedMovie.characters(at: 1, type: String.self), string)
+    #expect(packedMovie.characters(at: 1, type: String.self) == string)
   }
 
-  func testEncoding() {
+  @Test
+  func testEncoding() throws {
     let string = "Awesome \\\\t\t\nstring!"
     var fb = FlatBufferBuilder()
 
@@ -265,16 +272,12 @@ final class FlatBuffersUnionTests: XCTestCase {
     Movie.finish(&fb, end: end)
 
     var sizedBuffer = fb.sizedBuffer
-    do {
     let reader: Movie = try getCheckedRoot(byteBuffer: &sizedBuffer)
     let encoder = JSONEncoder()
     encoder.keyEncodingStrategy = .convertToSnakeCase
     encoder.outputFormatting = [.sortedKeys]
     let data = try encoder.encode(reader)
-      XCTAssertEqual(String(data: data, encoding: .utf8), jsonData)
+    #expect(String(data: data, encoding: .utf8) == jsonData)
-    } catch {
-      XCTFail(error.localizedDescription)
-    }
   }
 
   var jsonData: String {

tests/swift/Tests/Flatbuffers/FlatBuffersVectorsTests.swift

@@ -14,12 +14,13 @@
  * limitations under the License.
  */
 
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
-final class FlatBuffersVectors: XCTestCase {
+struct FlatBuffersVectors {
 
+  @Test
   func testCreatingTwoCountries() {
     let norway = "Norway"
     let denmark = "Denmark"
@@ -40,8 +41,8 @@ final class FlatBuffersVectors: XCTestCase {
     let vectorOffset = b.createVector(ofOffsets: vector)
     b.finish(offset: vectorOffset)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      b.sizedByteArray,
+      b.sizedByteArray ==
       [
         4, 0, 0, 0, 2, 0, 0, 0, 48, 0, 0, 0, 16, 0, 0, 0, 0, 0, 10, 0, 18, 0, 4, 0, 8, 0, 12, 0, 10,
         0, 0, 0, 40, 0, 0, 0, 100, 0, 0, 0, 200, 0, 0, 0, 0, 0, 10, 0, 16, 0, 4, 0, 8, 0, 12, 0, 10,
@@ -51,18 +52,20 @@ final class FlatBuffersVectors: XCTestCase {
     // swiftformat:enable all
   }
 
+  @Test
   func testCreateIntArray() {
     let numbers: [Int32] = [1, 2, 3, 4, 5]
     var b = FlatBufferBuilder(initialSize: 20)
     let o = b.createVector(numbers, size: numbers.count)
     b.finish(offset: o)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      b.sizedByteArray,
+      b.sizedByteArray ==
       [4, 0, 0, 0, 5, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0])
     // swiftformat:enable all
   }
 
+  @Test
   func testCreateStructArray() {
     struct Vec: NativeStruct {
       let x, y, z: Float32
@@ -76,8 +79,8 @@ final class FlatBuffersVectors: XCTestCase {
     let o = b.createVector(ofStructs: vector)
     b.finish(offset: o)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      b.sizedByteArray,
+      b.sizedByteArray ==
       [
         4, 0, 0, 0, 3, 0, 0, 0, 0, 0, 128, 63, 0, 0, 0, 64, 0, 0, 64, 64, 0, 0, 128, 64, 0, 0, 160,
         64, 0, 0, 192, 64, 0, 0, 224, 64, 0, 0, 0, 65, 0, 0, 16, 65,
@@ -85,28 +88,31 @@ final class FlatBuffersVectors: XCTestCase {
     // swiftformat:enable all
   }
 
+  @Test
   func testCreateEmptyIntArray() {
     let numbers: [Int32] = []
     var b = FlatBufferBuilder(initialSize: 20)
     let o = b.createVector(numbers, size: numbers.count)
     b.finish(offset: o)
-    XCTAssertEqual(b.sizedByteArray, [4, 0, 0, 0, 0, 0, 0, 0])
+    #expect(b.sizedByteArray == [4, 0, 0, 0, 0, 0, 0, 0])
   }
 
+  @Test
   func testCreateVectorOfStrings() {
     let strs = ["Denmark", "Norway"]
     var b = FlatBufferBuilder(initialSize: 20)
     let o = b.createVector(ofStrings: strs)
     b.finish(offset: o)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      b.sizedByteArray,
+      b.sizedByteArray ==
       [
         4, 0, 0, 0, 2, 0, 0, 0, 20, 0, 0, 0, 4, 0, 0, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0,
         0, 7, 0, 0, 0, 68, 101, 110, 109, 97, 114, 107, 0,
       ])
     // swiftformat:enable all
   }
+  @Test
   func testCreateSharedStringVector() {
     let norway = "Norway"
     let denmark = "Denmark"
@@ -119,8 +125,8 @@ final class FlatBuffersVectors: XCTestCase {
     let end = b.createVector(ofOffsets: v)
     b.finish(offset: end)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      b.sizedByteArray,
+      b.sizedByteArray ==
       [
         4, 0, 0, 0, 4, 0, 0, 0, 28, 0, 0, 0, 12, 0, 0, 0, 20, 0, 0, 0, 4, 0, 0, 0, 7, 0, 0, 0, 68,
         101, 110, 109, 97, 114, 107, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0,
@@ -128,6 +134,7 @@ final class FlatBuffersVectors: XCTestCase {
     // swiftformat:enable all
   }
 
+  @Test
   func testReadInt32Array() {
     let data: [Int32] = [1, 2, 3, 4, 5]
     var b = FlatBufferBuilder(initialSize: 20)
@@ -136,10 +143,11 @@ final class FlatBuffersVectors: XCTestCase {
     b.finish(offset: end)
     let number = Numbers.getRootAsNumbers(ByteBuffer(bytes: b.sizedByteArray))
     for (index, num) in number.vArrayInt32.enumerated() {
-      XCTAssertEqual(num, data[index])
+      #expect(num == data[index])
     }
   }
 
+  @Test
   func testReadDoubleArray() {
     let data: [Double] = [1, 2, 3, 4, 5]
     var b = FlatBufferBuilder(initialSize: 20)
@@ -148,10 +156,11 @@ final class FlatBuffersVectors: XCTestCase {
     b.finish(offset: end)
     let number = Numbers.getRootAsNumbers(ByteBuffer(bytes: b.sizedByteArray))
     for (index, num) in number.vArrayDouble.enumerated() {
-      XCTAssertEqual(num, data[index])
+      #expect(num == data[index])
     }
   }
 
+  @Test
   func testHasForArray() {
     var builder = FlatBufferBuilder(initialSize: 20)
     let emptyVector = [UInt8]()
@@ -166,14 +175,14 @@ final class FlatBuffersVectors: XCTestCase {
 
     var byteBuffer = ByteBuffer(bytes: builder.sizedByteArray)
     let msg: Swift_Tests_Vectors = getRoot(byteBuffer: &byteBuffer)
-    XCTAssertEqual(msg.none_.isEmpty, true)
+    #expect(msg.none_.isEmpty == true)
-    XCTAssertEqual(msg.empty.isEmpty, true)
+    #expect(msg.empty.isEmpty == true)
-    XCTAssertEqual(msg.empty.count, 0)
+    #expect(msg.empty.count == 0)
-    XCTAssertEqual(msg.array.isEmpty, false)
+    #expect(msg.array.isEmpty == false)
-    XCTAssertEqual(msg.array.count, 3)
+    #expect(msg.array.count == 3)
 
     for i in msg.array.startIndex..<msg.array.endIndex {
-      XCTAssertEqual(msg.array[i], 1 + UInt64(i))
+      #expect(msg.array[i] == 1 + UInt64(i))
     }
 
     let array = msg.withUnsafePointerToArray { ptr, count in
@@ -185,7 +194,7 @@ final class FlatBuffersVectors: XCTestCase {
       return Array(ptr)
     }
 
-    XCTAssertEqual(array, [1, 2, 3])
+    #expect(array == [1, 2, 3])
   }
 }
 

tests/swift/Tests/Flatbuffers/FlatbuffersDoubleTests.swift

@@ -14,14 +14,15 @@
  * limitations under the License.
  */
 
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
-final class FlatBuffersDoubleTests: XCTestCase {
+struct FlatBuffersDoubleTests {
 
   let country = "Norway"
 
+  @Test
   func testCreateFinish() {
     var b = FlatBufferBuilder(initialSize: 16)
     let countryOff = CountryDouble.createCountry(
@@ -38,9 +39,10 @@ final class FlatBuffersDoubleTests: XCTestCase {
       97, 121, 0, 0,
     ]
     // swiftformat:enable all
-    XCTAssertEqual(b.sizedByteArray, v)
+    #expect(b.sizedByteArray == v)
   }
 
+  @Test
   func testCreateFinishWithPrefix() {
     var b = FlatBufferBuilder(initialSize: 16)
     let countryOff = CountryDouble.createCountry(
@@ -57,7 +59,7 @@ final class FlatBuffersDoubleTests: XCTestCase {
       0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0,
     ]
     // swiftformat:enable all
-    XCTAssertEqual(b.sizedByteArray, v)
+    #expect(b.sizedByteArray == v)
   }
 }
 

tests/swift/Tests/Flatbuffers/FlatbuffersMoreDefaults.swift

@@ -15,11 +15,11 @@
  */
 
 import Foundation
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
-class FlatBuffersMoreDefaults: XCTestCase {
+struct FlatBuffersMoreDefaults {
 
   func testFlatbuffersObject() {
     var fbb = FlatBufferBuilder()
@@ -27,45 +27,45 @@ class FlatBuffersMoreDefaults: XCTestCase {
     fbb.finish(offset: root)
     var byteBuffer = fbb.sizedBuffer
     let defaults: MoreDefaults = getRoot(byteBuffer: &byteBuffer)
-    XCTAssertEqual(defaults.emptyString, "")
+    #expect(defaults.emptyString == "")
-    XCTAssertEqual(defaults.someString, "some")
+    #expect(defaults.someString == "some")
-    XCTAssertEqual(defaults.ints.isEmpty, true)
+    #expect(defaults.ints.isEmpty == true)
-    XCTAssertEqual(defaults.floats.isEmpty, true)
+    #expect(defaults.floats.isEmpty == true)
-    XCTAssertEqual(defaults.bools.isEmpty, true)
+    #expect(defaults.bools.isEmpty == true)
-    XCTAssertEqual(defaults.ints.count, 0)
+    #expect(defaults.ints.count == 0)
-    XCTAssertEqual(defaults.floats.count, 0)
+    #expect(defaults.floats.count == 0)
-    XCTAssertEqual(defaults.abcs.count, 0)
+    #expect(defaults.abcs.count == 0)
-    XCTAssertEqual(defaults.bools.count, 0)
+    #expect(defaults.bools.count == 0)
   }
 
   func testFlatbuffersObjectAPI() {
     var fbb = FlatBufferBuilder()
     let defaults = MoreDefaultsT()
-    XCTAssertEqual(defaults.emptyString, "")
+    #expect(defaults.emptyString == "")
-    XCTAssertEqual(defaults.someString, "some")
+    #expect(defaults.someString == "some")
-    XCTAssertEqual(defaults.ints, [])
+    #expect(defaults.ints == [])
-    XCTAssertEqual(defaults.floats, [])
+    #expect(defaults.floats == [])
-    XCTAssertEqual(defaults.abcs, [])
+    #expect(defaults.abcs == [])
-    XCTAssertEqual(defaults.bools, [])
+    #expect(defaults.bools == [])
 
     var buffer = defaults.serialize(builder: &fbb, type: MoreDefaults.self)
     let fDefaults: MoreDefaults = getRoot(byteBuffer: &buffer)
-    XCTAssertEqual(fDefaults.emptyString, "")
+    #expect(fDefaults.emptyString == "")
-    XCTAssertEqual(fDefaults.someString, "some")
+    #expect(fDefaults.someString == "some")
-    XCTAssertEqual(fDefaults.ints.isEmpty, true)
+    #expect(fDefaults.ints.isEmpty == true)
-    XCTAssertEqual(fDefaults.floats.isEmpty, true)
+    #expect(fDefaults.floats.isEmpty == true)
-    XCTAssertEqual(fDefaults.ints.count, 0)
+    #expect(fDefaults.ints.count == 0)
-    XCTAssertEqual(fDefaults.floats.count, 0)
+    #expect(fDefaults.floats.count == 0)
-    XCTAssertEqual(fDefaults.abcs.count, 0)
+    #expect(fDefaults.abcs.count == 0)
-    XCTAssertEqual(fDefaults.bools.count, 0)
+    #expect(fDefaults.bools.count == 0)
   }
 
-  func testEncoding() {
+  @Test
+  func testEncoding() throws {
     var fbb = FlatBufferBuilder()
     let root = MoreDefaults.createMoreDefaults(&fbb)
     fbb.finish(offset: root)
     var sizedBuffer = fbb.sizedBuffer
-    do {
     struct Test: Decodable {
       var emptyString: String
       var someString: String
@@ -77,11 +77,8 @@ class FlatBuffersMoreDefaults: XCTestCase {
     let decoder = JSONDecoder()
     decoder.keyDecodingStrategy = .convertFromSnakeCase
     let value = try decoder.decode(Test.self, from: data)
-      XCTAssertEqual(value.someString, "some")
+    #expect(value.someString == "some")
-      XCTAssertEqual(value.emptyString, "")
+    #expect(value.emptyString == "")
-    } catch {
-      XCTFail(error.localizedDescription)
-    }
   }
 
 }

tests/swift/Tests/Flatbuffers/FlatbuffersVerifierTests.swift

@@ -14,25 +14,20 @@
  * limitations under the License.
  */
 
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
-final class FlatbuffersVerifierTests: XCTestCase {
+final class FlatbuffersVerifierTests {
 
-  var buffer: ByteBuffer!
+  private var buffer: ByteBuffer
-  var validFlatbuffersObject: ByteBuffer!
+  private var validFlatbuffersObject: ByteBuffer
-  var invalidFlatbuffersObject: ByteBuffer!
+  private var invalidFlatbuffersObject: ByteBuffer
-  var invalidFlatbuffersObject2: ByteBuffer!
+  private var invalidFlatbuffersObject2: ByteBuffer
-  var invalidFlatbuffersObject3: ByteBuffer!
+  private var invalidFlatbuffersObject3: ByteBuffer
 
-  override func setUp() {
+  init() {
     // swiftformat:disable all
-    let memory = UnsafeMutableRawPointer.allocate(byteCount: 32, alignment: 1)
-    buffer = ByteBuffer(assumingMemoryBound: memory, capacity: 32)
-    add(buffer: &buffer, v: 4, p: 16)
-    add(buffer: &buffer, v: 4, p: 20)
-
     validFlatbuffersObject = ByteBuffer(bytes: [
       48, 0, 0, 0, 77, 79, 78, 83, 0, 0, 0, 0, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28, 0,
       0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0, 0, 0,
@@ -94,154 +89,216 @@ final class FlatbuffersVerifierTests: XCTestCase {
       109, 97, 0, 0, 0, 6, 0, 0, 0, 66, 97, 114, 110, 101, 121, 0, 0, 5, 0, 0, 0, 70, 114, 111, 100,
       0x00, 111, 0, 0, 0,
     ])
+
+    let memory = UnsafeMutableRawPointer.allocate(byteCount: 32, alignment: 1)
+    buffer = ByteBuffer(assumingMemoryBound: memory, capacity: 32)
+
+    add(buffer: &buffer, v: 4, p: 16)
+    add(buffer: &buffer, v: 4, p: 20)
     // swiftformat:enable all
   }
 
-  func testVeriferInitPassing() {
+  @Test
+  func testVeriferInitPassing() throws {
     let memory = UnsafeMutableRawPointer.allocate(byteCount: 8, alignment: 1)
     var buffer = ByteBuffer(
       assumingMemoryBound: memory,
       capacity: Int(FlatBufferMaxSize) - 1)
-    XCTAssertNoThrow(try Verifier(buffer: &buffer))
+    _ = try Verifier(buffer: &buffer)
   }
 
+  @Test
   func testVeriferInitFailing() {
     let memory = UnsafeMutableRawPointer.allocate(byteCount: 8, alignment: 1)
     var buffer = ByteBuffer(
       assumingMemoryBound: memory,
       capacity: Int(FlatBufferMaxSize) + 1)
-    XCTAssertThrowsError(try Verifier(buffer: &buffer))
+    #expect(throws: FlatbuffersErrors.exceedsMaxSizeAllowed) {
+      try Verifier(buffer: &buffer)
+    }
   }
 
+  @Test
   func testFailingID() {
     let dutData: [UInt8] = [1, 2, 3, 4, 5, 6, 7]
     var buff = ByteBuffer(bytes: dutData)
-    do {
+    #expect(throws: FlatbuffersErrors.bufferDoesntContainID) {
       let _: Monster = try getCheckedRoot(byteBuffer: &buff, fileId: "ABCD")
-      XCTFail("This should always fail")
-    } catch {
-      XCTAssertEqual(error as? FlatbuffersErrors, .bufferDoesntContainID)
     }
   }
 
-  func testVerifierCheckAlignment() {
+  @Test
+  func testVerifierCheckAlignment() throws {
     let verifier = try! Verifier(buffer: &buffer)
-    do {
+    #expect(throws: FlatbuffersErrors.missAlignedPointer(
+      position: 20,
+      type: "Int"))
+    {
       try verifier.isAligned(position: 20, type: Int.self)
-    } catch {
-      XCTAssertEqual(
-        error as? FlatbuffersErrors,
-        .missAlignedPointer(position: 20, type: "Int"))
     }
-    XCTAssertNoThrow(try verifier.isAligned(position: 16, type: Int.self))
+
+    try verifier.isAligned(position: 16, type: Int.self)
 
     let newVerifer = try! Verifier(buffer: &buffer, checkAlignment: false)
-    XCTAssertNoThrow(try newVerifer.isAligned(position: 16, type: Int.self))
+    try newVerifer.isAligned(position: 16, type: Int.self)
   }
 
-  func testRangeInBuffer() {
+  @Test
+  func testRangeInBuffer() throws {
     var verifier = try! Verifier(buffer: &buffer)
     let size = MemoryLayout<Int64>.size
-    XCTAssertNoThrow(try verifier.rangeInBuffer(position: 24, size: size))
+    try verifier.rangeInBuffer(position: 24, size: size)
-    XCTAssertThrowsError(try verifier.rangeInBuffer(position: 26, size: size))
+    #expect(throws: FlatbuffersErrors.outOfBounds(position: 34, end: 32)) {
-    XCTAssertThrowsError(try verifier.rangeInBuffer(position: 26, size: size))
+      try verifier.rangeInBuffer(position: 26, size: size)
-    XCTAssertThrowsError(try verifier.rangeInBuffer(position: 30, size: size))
+    }
-    XCTAssertThrowsError(try verifier.rangeInBuffer(position: 32, size: size))
+    #expect(throws: FlatbuffersErrors.outOfBounds(position: 34, end: 32)) {
-    XCTAssertThrowsError(try verifier.rangeInBuffer(position: 34, size: size))
+      try verifier.rangeInBuffer(
+        position: 26,
+        size: size)
+    }
+    #expect(throws: FlatbuffersErrors.outOfBounds(position: 38, end: 32)) {
+      try verifier.rangeInBuffer(
+        position: 30,
+        size: size)
+    }
+    #expect(throws: FlatbuffersErrors.outOfBounds(position: 40, end: 32)) {
+      try verifier.rangeInBuffer(
+        position: 32,
+        size: size)
+    }
+    #expect(throws: FlatbuffersErrors.outOfBounds(position: 42, end: 32)) {
+      try verifier.rangeInBuffer(
+        position: 34,
+        size: size)
+    }
 
     verifier = try! Verifier(
       buffer: &buffer,
       options: .init(maxDepth: 0, maxTableCount: 0, maxApparentSize: 4))
-    do {
+
+    #expect(throws: FlatbuffersErrors.apparentSizeTooLarge) {
       try verifier.rangeInBuffer(position: 24, size: size)
-    } catch {
-      XCTAssertEqual(
-        error as! FlatbuffersErrors,
-        .apparentSizeTooLarge)
     }
   }
 
-  func testPositionInBuffer() {
+  @Test
+  func testPositionInBuffer() throws {
     let verifier = try! Verifier(buffer: &buffer)
-    XCTAssertNoThrow(try verifier.inBuffer(position: 0, of: Int64.self))
+    try verifier.inBuffer(position: 0, of: Int64.self)
-    XCTAssertNoThrow(try verifier.inBuffer(position: 24, of: Int64.self))
+    try verifier.inBuffer(position: 24, of: Int64.self)
-    XCTAssertThrowsError(try verifier.inBuffer(position: -9, of: Int64.self))
+
-    XCTAssertThrowsError(try verifier.inBuffer(position: 25, of: Int64.self))
+    #expect(
-    XCTAssertThrowsError(try verifier.inBuffer(position: 26, of: Int32.self))
+      throws: FlatbuffersErrors.missAlignedPointer(
-    XCTAssertThrowsError(try verifier.inBuffer(position: 26, of: Int64.self))
+        position: -9,
-    XCTAssertThrowsError(try verifier.inBuffer(position: 30, of: Int64.self))
+        type: "Int64"))
-    XCTAssertThrowsError(try verifier.inBuffer(position: 32, of: Int64.self))
+    {
-    XCTAssertThrowsError(try verifier.inBuffer(position: 34, of: Int64.self))
+      try verifier.inBuffer(position: -9, of: Int64.self)
+    }
+    #expect(
+      throws: FlatbuffersErrors.missAlignedPointer(
+        position: 25,
+        type: "Int64"))
+    {
+      try verifier.inBuffer(position: 25, of: Int64.self)
+    }
+    #expect(
+      throws: FlatbuffersErrors.missAlignedPointer(
+        position: 26,
+        type: "Int32"))
+    {
+      try verifier.inBuffer(position: 26, of: Int32.self)
+    }
+    #expect(
+      throws: FlatbuffersErrors.missAlignedPointer(
+        position: 26,
+        type: "Int64"))
+    {
+      try verifier.inBuffer(position: 26, of: Int64.self)
+    }
+    #expect(
+      throws: FlatbuffersErrors.missAlignedPointer(
+        position: 30,
+        type: "Int64"))
+    {
+      try verifier.inBuffer(position: 30, of: Int64.self)
+    }
+    #expect(throws: FlatbuffersErrors.outOfBounds(position: 40, end: 32)) {
+      try verifier.inBuffer(
+        position: 32,
+        of: Int64.self)
+    }
+    #expect(
+      throws: FlatbuffersErrors.missAlignedPointer(
+        position: 34,
+        type: "Int64"))
+    {
+      try verifier.inBuffer(position: 34, of: Int64.self)
+    }
   }
 
-  func testVisitTable() {
+  @Test
+  func testVisitTable() throws {
     var verifier = try! Verifier(buffer: &validFlatbuffersObject)
-    XCTAssertNoThrow(try verifier.visitTable(at: 48))
+    _ = try verifier.visitTable(at: 48)
     verifier.reset()
   }
 
-  func testTableVerifier() {
+  @Test
+  func testTableVerifier() throws {
     var verifier = try! Verifier(buffer: &validFlatbuffersObject)
 
     var tableVerifer = try! verifier.visitTable(at: 48)
-    XCTAssertEqual(verifier.depth, 1)
+    #expect(verifier.depth == 1)
-    XCTAssertEqual(verifier.tableCount, 1)
+    #expect(verifier.tableCount == 1)
 
-    XCTAssertNoThrow(
     try tableVerifer.visit(
       field: 4,
       fieldName: "Vec",
       required: false,
-        type: Vec3.self))
+      type: Vec3.self)
-    XCTAssertNoThrow(
+
     try tableVerifer.visit(
       field: 8,
       fieldName: "hp",
       required: false,
-        type: Int16.self))
+      type: Int16.self)
 
-    XCTAssertNoThrow(
     try tableVerifer.visit(
       field: 10,
       fieldName: "name",
       required: true,
-        type: ForwardOffset<String>.self))
+      type: ForwardOffset<String>.self)
 
-    XCTAssertNoThrow(
     try tableVerifer.visit(
       field: 14,
       fieldName: "inventory",
       required: false,
-        type: ForwardOffset<Vector<UInt8, UInt8>>.self))
+      type: ForwardOffset<Vector<UInt8, UInt8>>.self)
 
-    XCTAssertNoThrow(
     try tableVerifer.visit(
       field: 22,
       fieldName: "test4",
       required: false,
       type: ForwardOffset<Vector<MyGame_Example_Test, MyGame_Example_Test>>
-          .self))
+        .self)
 
-    XCTAssertNoThrow(
     try tableVerifer.visit(
       field: 24,
       fieldName: "Vector of strings",
       required: false,
-        type: ForwardOffset<Vector<ForwardOffset<String>, String>>.self))
+      type: ForwardOffset<Vector<ForwardOffset<String>, String>>.self)
 
-    do {
+    #expect(throws: FlatbuffersErrors.missAlignedPointer(
+      position: 25,
+      type: "UInt16"))
+    {
       try tableVerifer.visit(
         field: 13,
         fieldName: "notvalid",
         required: false,
         type: Int16.self)
-    } catch {
-      XCTAssertEqual(
-        error as! FlatbuffersErrors,
-        .missAlignedPointer(position: 25, type: "UInt16"))
     }
 
-    do {
     try tableVerifer.visit(
       unionKey: 18,
       unionField: 20,
@@ -251,29 +308,31 @@ final class FlatbuffersVerifierTests: XCTestCase {
       completion: { (verifier, key: MyGame_Example_Any_, pos) in
         switch key {
         case .none_:
-            break
+          break // NOTE - SWIFT doesnt support none
         case .monster:
           try ForwardOffset<MyGame_Example_Monster>.verify(
             &verifier,
             at: pos,
             of: MyGame_Example_Monster.self)
-
         case .testsimpletablewithenum:
-            break
+          try ForwardOffset<MyGame_Example_TestSimpleTableWithEnum>.verify(
+            &verifier,
+            at: pos,
+            of: MyGame_Example_TestSimpleTableWithEnum.self)
         case .mygameExample2Monster:
-            break
+          try ForwardOffset<MyGame_Example2_Monster>.verify(
+            &verifier,
+            at: pos,
+            of: MyGame_Example2_Monster.self)
         }
       })
-    } catch {
+
-      XCTAssertEqual(
-        error as! FlatbuffersErrors,
-        .missAlignedPointer(position: 25, type: "UInt16"))
-    }
     tableVerifer.finish()
-    XCTAssertEqual(verifier.depth, 0)
+    #expect(verifier.depth == 0)
   }
 
-  func testVerifyUnionVectors() {
+  @Test
+  func testVerifyUnionVectors() throws {
     // swiftformat:disable all
     var byteBuffer = ByteBuffer(bytes: [
       20, 0, 0, 0, 77, 79, 86, 73, 12, 0, 12, 0, 0, 0, 0, 0, 8, 0, 4, 0, 12, 0, 0, 0, 8, 0, 0, 0,
@@ -281,10 +340,11 @@ final class FlatbuffersVerifierTests: XCTestCase {
       0, 0, 7, 0, 0, 0, 0, 0, 6, 0, 8, 0, 4, 0, 6, 0, 0, 0, 8, 0, 0, 0,
     ])
     // swiftformat:enable all
-    XCTAssertNoThrow(try getCheckedRoot(byteBuffer: &byteBuffer) as Movie)
+    _ = try getCheckedRoot(byteBuffer: &byteBuffer) as Movie
   }
 
-  func testErrorWrongFileId() {
+  @Test
+  func testErrorWrongFileId() throws{
     // swiftformat:disable all
     var byteBuffer = ByteBuffer(bytes: [
       20, 0, 0, 0, 77, 79, 86, 73, 12, 0, 12, 0, 0, 0, 0, 0, 8, 0, 4, 0, 12, 0, 0, 0, 8, 0, 0, 0,
@@ -292,12 +352,14 @@ final class FlatbuffersVerifierTests: XCTestCase {
       0, 0, 7, 0, 0, 0, 0, 0, 6, 0, 8, 0, 4, 0, 6, 0, 0, 0, 8, 0, 0, 0,
     ])
     // swiftformat:enable all
-    XCTAssertThrowsError(
+    #expect(throws: FlatbuffersErrors.bufferIdDidntMatchPassedId) {
       try getCheckedRoot(
         byteBuffer: &byteBuffer,
-        fileId: "FLEX") as Movie)
+        fileId: "FLEX") as Movie
+    }
   }
 
+  @Test
   func testVerifyPrefixedBuffer() {
     // swiftformat:disable all
     var byteBuffer = ByteBuffer(bytes: [
@@ -306,41 +368,71 @@ final class FlatbuffersVerifierTests: XCTestCase {
       0, 2, 0, 0, 0, 7, 0, 0, 0, 0, 0, 6, 0, 8, 0, 4, 0, 6, 0, 0, 0, 8, 0, 0, 0,
     ])
     // swiftformat:enable all
-    XCTAssertThrowsError(
+    #expect(throws: FlatbuffersErrors.prefixedSizeNotEqualToBufferSize) {
-      try getCheckedPrefixedSizeRoot(byteBuffer: &byteBuffer) as Movie)
+      try getCheckedPrefixedSizeRoot(byteBuffer: &byteBuffer) as Movie
+    }
   }
 
-  func testFullVerifier() {
+  @Test
-    XCTAssertNoThrow(
+  func testFullVerifier() throws {
+    _ =
       try getCheckedRoot(
-        byteBuffer: &validFlatbuffersObject) as MyGame_Example_Monster)
+        byteBuffer: &validFlatbuffersObject) as MyGame_Example_Monster
   }
 
-  func testFullVerifierWithFileId() {
+  @Test
-    XCTAssertNoThrow(
+  func testFullVerifierWithFileId() throws {
-      try getCheckedRoot(
+    _ = try getCheckedRoot(
       byteBuffer: &validFlatbuffersObject,
-        fileId: MyGame_Example_Monster.id) as MyGame_Example_Monster)
+      fileId: MyGame_Example_Monster.id) as MyGame_Example_Monster
   }
 
+  @Test
   func testInvalidBuffer() {
-    XCTAssertThrowsError(
+    #expect(throws: FlatbuffersErrors.self) {
       try getCheckedRoot(
-        byteBuffer: &invalidFlatbuffersObject) as MyGame_Example_Monster)
+        byteBuffer: &self.invalidFlatbuffersObject) as MyGame_Example_Monster
+    }
   }
 
+  @Test
   func testInvalidBuffer2() {
-    XCTAssertThrowsError(
+    #expect(throws: FlatbuffersErrors.self) {
       try getCheckedRoot(
-        byteBuffer: &invalidFlatbuffersObject2) as MyGame_Example_Monster)
+        byteBuffer: &self.invalidFlatbuffersObject2) as MyGame_Example_Monster
+    }
   }
 
+  @Test
   func testInvalidBuffer3() {
-    XCTAssertThrowsError(
+    #expect(throws: FlatbuffersErrors.self) {
       try getCheckedRoot(
-        byteBuffer: &invalidFlatbuffersObject3) as MyGame_Example_Monster)
+        byteBuffer: &self.invalidFlatbuffersObject3) as MyGame_Example_Monster
+    }
   }
 
+  @Test(.bug("https://github.com/google/flatbuffers/issues/9082"))
+  func testRejectsTruncatedScalarVector() {
+    // swiftformat:disable all
+    var byteBuffer = ByteBuffer(bytes: [
+      16, 0, 0, 0,
+      6, 0, 8, 0,
+      4, 0, 0, 0,
+      0, 0, 0, 0,
+      12, 0, 0, 0,
+      8, 0, 0, 0,
+      0, 0, 0, 0,
+      2, 0, 0, 0,
+      65, 66,
+    ])
+    // swiftformat:enable all
+
+    #expect(throws: FlatbuffersErrors.self) {
+      try getCheckedRoot(byteBuffer: &byteBuffer) as Swift_Tests_Vectors
+    }
+  }
+
+  @Test
   func testValidUnionBuffer() {
     let string = "Awesome \\\\t\t\nstring!"
     var fb = FlatBufferBuilder()
@@ -362,9 +454,14 @@ final class FlatbuffersVerifierTests: XCTestCase {
       charactersVectorOffset: characterVector)
     Movie.finish(&fb, end: end)
     var buf = fb.sizedBuffer
-    XCTAssertNoThrow(try getCheckedRoot(byteBuffer: &buf) as Movie)
+    do {
+      _ = try getCheckedRoot(byteBuffer: &buf) as Movie
+    } catch {
+      Issue.record(error)
+    }
   }
 
+  @Test
   func testNestedTables() throws {
     var builder = FlatBufferBuilder()
     let name = builder.create(string: "Monster")
@@ -383,22 +480,22 @@ final class FlatbuffersVerifierTests: XCTestCase {
     var verifier = try! Verifier(buffer: &sizedBuffer)
     var tableVerifer = try! verifier.visitTable(
       at: try getOffset(at: 0, within: verifier))
-    XCTAssertEqual(verifier.depth, 1)
+    #expect(verifier.depth == 1)
-    XCTAssertEqual(verifier.tableCount, 1)
+    #expect(verifier.tableCount == 1)
 
     let position = try tableVerifer.dereference(28)!
 
     var nestedTable = try verifier.visitTable(
       at: try getOffset(at: position, within: verifier))
 
-    XCTAssertEqual(verifier.depth, 2)
+    #expect(verifier.depth == 2)
-    XCTAssertEqual(verifier.tableCount, 2)
+    #expect(verifier.tableCount == 2)
     nestedTable.finish()
-    XCTAssertEqual(verifier.depth, 1)
+    #expect(verifier.depth == 1)
-    XCTAssertEqual(verifier.tableCount, 2)
+    #expect(verifier.tableCount == 2)
     tableVerifer.finish()
-    XCTAssertEqual(verifier.depth, 0)
+    #expect(verifier.depth == 0)
-    XCTAssertEqual(verifier.tableCount, 2)
+    #expect(verifier.tableCount == 2)
   }
 
   func add(buffer: inout ByteBuffer, v: Int32, p: Int) {

tests/swift/Tests/Flatbuffers/MutatingBool_generated.swift

@@ -74,7 +74,7 @@ public struct Property_Mutable: FlatBufferStruct, FlatbuffersVectorInitializable
   }
 }
 
-public struct TestMutatingBool: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct TestMutatingBool: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/arrays_test_generated.swift

@@ -398,7 +398,7 @@ public struct MyGame_Example_LargeArrayStruct_Mutable: FlatBufferStruct, Flatbuf
 }
 
 @available(macOS 26.0, iOS 26.0, watchOS 26.0, tvOS 26.0, *)
-public struct MyGame_Example_ArrayTable: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_ArrayTable: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/empty_vtable_generated.swift

@@ -8,7 +8,7 @@ import Common
 
 import FlatBuffers
 
-public struct DataModel_A: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct DataModel_A: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/monster_test.grpc.swift

@@ -5,206 +5,568 @@
 // swiftlint:disable all
 // swiftformat:disable all
 
-#if !os(Windows)
+#if !os(Windows) && compiler(>=6.0)
-import Foundation
-import GRPC
-import NIO
-import NIOHTTP1
 import FlatBuffers
+import Foundation
+import GRPCCore
+import GRPCNIOTransportCore
 
-public protocol GRPCFlatBufPayload: GRPCPayload, FlatBufferGRPCMessage {}
+
-public extension GRPCFlatBufPayload {
+/// Usage: instantiate MyGame.Example.MonsterStorageServiceClient, then call methods of this protocol to make API calls.
-  init(serializedByteBuffer: inout NIO.ByteBuffer) throws {
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-    self.init(byteBuffer: FlatBuffers.ByteBuffer(contiguousBytes: serializedByteBuffer.readableBytesView, count: serializedByteBuffer.readableBytes))
+extension FlatBuffersMessageSerializer: MessageSerializer {
-  }
+  public func serialize<Bytes>(_ message: Message) throws -> Bytes where Bytes : GRPCCore.GRPCContiguousBytes {
-  func serialize(into buffer: inout NIO.ByteBuffer) throws {
+    do {
-    withUnsafeReadableBytes { buffer.writeBytes($0) }
+      return try self.serialize(message: message) { GRPCNIOTransportBytes($0) } as! Bytes
+    } catch let error {
+      throw RPCError(
+        code: .invalidArgument,
+        message: "Can't serialize message",
+        cause: error
+      )
+    }
   }
 }
-extension Message: GRPCFlatBufPayload {}
 
-/// Usage: instantiate MyGame_Example_MonsterStorageServiceClient, then call methods of this protocol to make API calls.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-public protocol MyGame_Example_MonsterStorageClientProtocol: GRPCClient {
+extension FlatBuffersMessageDeserializer: MessageDeserializer {
+  public func deserialize<Bytes>(_ serializedMessageBytes: Bytes) throws -> Message where Bytes : GRPCCore.GRPCContiguousBytes {
+    do {
+      return try serializedMessageBytes.withUnsafeBytes {
+        try self.deserialize(pointer: $0)
+      }
+    } catch let error {
+      throw RPCError(
+        code: .invalidArgument,
+        message: "Can't Decode message of type \(Message.self)",
+        cause: error
+      )
+    }
+  }
+}
 
-  var serviceName: String { get }
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+public enum MyGame_Example_MonsterStorage: Sendable {
+  public static let descriptor = GRPCCore.ServiceDescriptor(fullyQualifiedService: "MyGame.Example.MonsterStorage")
+  public enum Method: Sendable {
+    public enum Store: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = MyGame_Example_Stat
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "MyGame.Example.MonsterStorage"),
+        method: "Store"
+      )
+    }
+    public enum Retrieve: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = MyGame_Example_Monster
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "MyGame.Example.MonsterStorage"),
+        method: "Retrieve"
+      )
+    }
+    public enum GetMaxHitPoint: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = MyGame_Example_Stat
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "MyGame.Example.MonsterStorage"),
+        method: "GetMaxHitPoint"
+      )
+    }
+    public enum GetMinMaxHitPoints: Sendable {
+      public typealias Input = FlatBufferBuilder
+      public typealias Output = MyGame_Example_Stat
+      public static let descriptor = GRPCCore.MethodDescriptor(
+        service: GRPCCore.ServiceDescriptor(fullyQualifiedService: "MyGame.Example.MonsterStorage"),
+        method: "GetMinMaxHitPoints"
+      )
+    }
+    public static let descriptors: [GRPCCore.MethodDescriptor] = [
+      Store.descriptor,
+      Retrieve.descriptor,
+      GetMaxHitPoint.descriptor,
+      GetMinMaxHitPoints.descriptor,
+    ]
+  }
+}
 
-  var interceptors: MyGame_Example_MonsterStorageClientInterceptorFactoryProtocol? { get }
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension GRPCCore.ServiceDescriptor {
+  public static let MyGame_Example_MonsterStorage = GRPCCore.ServiceDescriptor(fullyQualifiedService: "MyGame.Example.MonsterStorage")
+}
 
+// MARK: MyGame.Example.MonsterStorage Server
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension MyGame_Example_MonsterStorage {
+  public protocol StreamingServiceProtocol: GRPCCore.RegistrableRPCService {
     func Store(
-    _ request: Message<MyGame_Example_Monster>
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
-    , callOptions: CallOptions?
+      context: GRPCCore.ServerContext
-  ) -> UnaryCall<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>>
     
     func Retrieve(
-    _ request: Message<MyGame_Example_Stat>
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Monster>>,
-    , callOptions: CallOptions?,
+      context: GRPCCore.ServerContext
-    handler: @escaping (Message<MyGame_Example_Monster>) -> Void
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Monster>>
-  ) -> ServerStreamingCall<Message<MyGame_Example_Stat>, Message<MyGame_Example_Monster>>
     
     func GetMaxHitPoint(
-    callOptions: CallOptions?
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
-  ) -> ClientStreamingCall<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>>
     
     func GetMinMaxHitPoints(
-    callOptions: CallOptions?,
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
-    handler: @escaping (Message<MyGame_Example_Stat> ) -> Void
+      context: GRPCCore.ServerContext
-  ) -> BidirectionalStreamingCall<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>>
     
   }
   
-extension MyGame_Example_MonsterStorageClientProtocol {
+  public protocol ServiceProtocol: MyGame_Example_MonsterStorage.StreamingServiceProtocol {
+    func Store(
+      request: GRPCCore.ServerRequest<GRPCMessage<MyGame_Example_Stat>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.ServerResponse<GRPCMessage<MyGame_Example_Stat>>
     
-  public var serviceName: String { "MyGame.Example.MonsterStorage" }
+    func Retrieve(
+      request: GRPCCore.ServerRequest<GRPCMessage<MyGame_Example_Monster>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Monster>>
     
+    func GetMaxHitPoint(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.ServerResponse<GRPCMessage<MyGame_Example_Stat>>
+    
+    func GetMinMaxHitPoints(
+      request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>>
+    
+  }
+  
+  public protocol SimpleServiceProtocol: MyGame_Example_MonsterStorage.ServiceProtocol {
+    func Store(
+      request: GRPCMessage<MyGame_Example_Stat>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCMessage<MyGame_Example_Stat>
+    
+    func Retrieve(
+      request: GRPCMessage<MyGame_Example_Monster>,
+      response: GRPCCore.RPCWriter<GRPCMessage<MyGame_Example_Monster>>,
+      context: GRPCCore.ServerContext
+    ) async throws
+    
+    func GetMaxHitPoint(
+      request: GRPCCore.RPCAsyncSequence<GRPCMessage<MyGame_Example_Stat>, any Swift.Error>,
+      context: GRPCCore.ServerContext
+    ) async throws -> GRPCMessage<MyGame_Example_Stat>
+    
+    func GetMinMaxHitPoints(
+      request: GRPCCore.RPCAsyncSequence<GRPCMessage<MyGame_Example_Stat>, any Swift.Error>,
+      response: GRPCCore.RPCWriter<GRPCMessage<MyGame_Example_Stat>>,
+      context: GRPCCore.ServerContext
+    ) async throws
+    
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension MyGame_Example_MonsterStorage.StreamingServiceProtocol {
+  public func registerMethods<Transport>(with router: inout GRPCCore.RPCRouter<Transport>) where Transport: GRPCCore.ServerTransport {
+    router.registerHandler(
+      forMethod: MyGame_Example_MonsterStorage.Method.Store.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Stat>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Stat>>(),
+      handler: { request, context in
+        try await self.Store(
+          request: request,
+          context: context
+        )
+      }
+    )
+    router.registerHandler(
+      forMethod: MyGame_Example_MonsterStorage.Method.Retrieve.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Monster>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Monster>>(),
+      handler: { request, context in
+        try await self.Retrieve(
+          request: request,
+          context: context
+        )
+      }
+    )
+    router.registerHandler(
+      forMethod: MyGame_Example_MonsterStorage.Method.GetMaxHitPoint.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Stat>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Stat>>(),
+      handler: { request, context in
+        try await self.GetMaxHitPoint(
+          request: request,
+          context: context
+        )
+      }
+    )
+    router.registerHandler(
+      forMethod: MyGame_Example_MonsterStorage.Method.GetMinMaxHitPoints.descriptor,
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Stat>>(),
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Stat>>(),
+      handler: { request, context in
+        try await self.GetMinMaxHitPoints(
+          request: request,
+          context: context
+        )
+      }
+    )
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension MyGame_Example_MonsterStorage.ServiceProtocol {
   public func Store(
-    _ request: Message<MyGame_Example_Monster>
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
-    , callOptions: CallOptions? = nil
+    context: GRPCCore.ServerContext
-  ) -> UnaryCall<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>> {
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>> {
-    return self.makeUnaryCall(
+    let response = try await self.Store(
-      path: "/MyGame.Example.MonsterStorage/Store",
+      request: GRPCCore.ServerRequest(stream: request),
-      request: request,
+      context: context
-      callOptions: callOptions ?? self.defaultCallOptions,
-      interceptors: self.interceptors?.makeStoreInterceptors() ?? []
     )
+    return GRPCCore.StreamingServerResponse(single: response)
   }
-
   public func Retrieve(
-    _ request: Message<MyGame_Example_Stat>
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Monster>>,
-    , callOptions: CallOptions? = nil,
+    context: GRPCCore.ServerContext
-    handler: @escaping (Message<MyGame_Example_Monster>) -> Void
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Monster>> {
-  ) -> ServerStreamingCall<Message<MyGame_Example_Stat>, Message<MyGame_Example_Monster>> {
+    let response = try await self.Retrieve(
-    return self.makeServerStreamingCall(
+      request: GRPCCore.ServerRequest(stream: request),
-      path: "/MyGame.Example.MonsterStorage/Retrieve",
+      context: context
-      request: request,
-      callOptions: callOptions ?? self.defaultCallOptions,
-      interceptors: self.interceptors?.makeRetrieveInterceptors() ?? [],
-      handler: handler
     )
+    return response
   }
-
   public func GetMaxHitPoint(
-    callOptions: CallOptions? = nil
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
-  ) -> ClientStreamingCall<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>> {
+    context: GRPCCore.ServerContext
-    return self.makeClientStreamingCall(
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>> {
-      path: "/MyGame.Example.MonsterStorage/GetMaxHitPoint",
+    let response = try await self.GetMaxHitPoint(
-      callOptions: callOptions ?? self.defaultCallOptions,
+      request: request,
-      interceptors: self.interceptors?.makeGetMaxHitPointInterceptors() ?? []
+      context: context
     )
+    return GRPCCore.StreamingServerResponse(single: response)
+  }
 }
 
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension MyGame_Example_MonsterStorage.SimpleServiceProtocol {
+  public func Store(
+    request: GRPCCore.ServerRequest<GRPCMessage<MyGame_Example_Stat>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.ServerResponse<GRPCMessage<MyGame_Example_Stat>> {
+    return GRPCCore.ServerResponse<GRPCMessage<MyGame_Example_Stat>>(
+      message: try await self.Store(
+        request: request.message,
+        context: context
+      ),
+      metadata: [:]
+    )
+  }
+  public func Retrieve(
+    request: GRPCCore.ServerRequest<GRPCMessage<MyGame_Example_Monster>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Monster>> {
+    return GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Monster>>(
+      metadata: [:],
+      producer: { writer in
+        try await self.Retrieve(
+          request: request.message,
+          response: writer,
+          context: context
+        )
+        return [:]
+      }
+    )
+  }
+  public func GetMaxHitPoint(
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
+    context: GRPCCore.ServerContext
+  ) async throws -> GRPCCore.ServerResponse<GRPCMessage<MyGame_Example_Stat>> {
+    return GRPCCore.ServerResponse<GRPCMessage<MyGame_Example_Stat>>(
+      message: try await self.GetMaxHitPoint(
+        request: request.messages,
+        context: context
+      ),
+      metadata: [:]
+    )
+  }
   public func GetMinMaxHitPoints(
-    callOptions: CallOptions? = nil,
+    request: GRPCCore.StreamingServerRequest<GRPCMessage<MyGame_Example_Stat>>,
-    handler: @escaping (Message<MyGame_Example_Stat> ) -> Void
+    context: GRPCCore.ServerContext
-  ) -> BidirectionalStreamingCall<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>> {
+  ) async throws -> GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>> {
-    return self.makeBidirectionalStreamingCall(
+    return GRPCCore.StreamingServerResponse<GRPCMessage<MyGame_Example_Stat>>(
-      path: "/MyGame.Example.MonsterStorage/GetMinMaxHitPoints",
+      metadata: [:],
-      callOptions: callOptions ?? self.defaultCallOptions,
+      producer: { writer in
-      interceptors: self.interceptors?.makeGetMinMaxHitPointsInterceptors() ?? [],
+        try await self.GetMinMaxHitPoints(
-      handler: handler
+          request: request.messages,
+          response: writer,
+          context: context
+        )
+        return [:]
+      }
     )
   }
 }
 
-public protocol MyGame_Example_MonsterStorageClientInterceptorFactoryProtocol {
-  /// - Returns: Interceptors to use when invoking 'Store'.
-  func makeStoreInterceptors() -> [ClientInterceptor<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>]
 
-  /// - Returns: Interceptors to use when invoking 'Retrieve'.
+// MARK: MyGame.Example.MonsterStorage Client
-  func makeRetrieveInterceptors() -> [ClientInterceptor<Message<MyGame_Example_Stat>, Message<MyGame_Example_Monster>>]
 
-  /// - Returns: Interceptors to use when invoking 'GetMaxHitPoint'.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-  func makeGetMaxHitPointInterceptors() -> [ClientInterceptor<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>]
+extension MyGame_Example_MonsterStorage {
+  public protocol ClientProtocol: Sendable {
+    func Store<Result>(
+      request: GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Stat>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Stat>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
     
-  /// - Returns: Interceptors to use when invoking 'GetMinMaxHitPoints'.
+    func Retrieve<Result>(
-  func makeGetMinMaxHitPointsInterceptors() -> [ClientInterceptor<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>]
+      request: GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Monster>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Monster>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Monster>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Monster>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
     
-}
+    func GetMaxHitPoint<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Stat>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Stat>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
     
-public final class MyGame_Example_MonsterStorageServiceClient: MyGame_Example_MonsterStorageClientProtocol {
+    func GetMinMaxHitPoints<Result>(
-  public let channel: GRPCChannel
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>,
-  public var defaultCallOptions: CallOptions
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Stat>>,
-  public var interceptors: MyGame_Example_MonsterStorageClientInterceptorFactoryProtocol?
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Stat>>,
+      options: GRPCCore.CallOptions,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable
     
-  public init(
-    channel: GRPCChannel,
-    defaultCallOptions: CallOptions = CallOptions(),
-    interceptors: MyGame_Example_MonsterStorageClientInterceptorFactoryProtocol? = nil
-  ) {
-    self.channel = channel
-    self.defaultCallOptions = defaultCallOptions
-    self.interceptors = interceptors
   }
 }
 
-public protocol MyGame_Example_MonsterStorageProvider: CallHandlerProvider {
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-  var interceptors: MyGame_Example_MonsterStorageServerInterceptorFactoryProtocol? { get }
+extension MyGame_Example_MonsterStorage {
-  func Store(request: Message<MyGame_Example_Monster>, context: StatusOnlyCallContext) -> EventLoopFuture<Message<MyGame_Example_Stat>>
+  public struct Client<Transport>: ClientProtocol where Transport: GRPCCore.ClientTransport {
-  func Retrieve(request: Message<MyGame_Example_Stat>, context: StreamingResponseCallContext<Message<MyGame_Example_Monster>>) -> EventLoopFuture<GRPCStatus>
+    private let client: GRPCCore.GRPCClient<Transport>
-  func GetMaxHitPoint(context: UnaryResponseCallContext<Message<MyGame_Example_Stat>>) -> EventLoopFuture<(StreamEvent<Message<MyGame_Example_Monster>>) -> Void>
+    
-  func GetMinMaxHitPoints(context: StreamingResponseCallContext<Message<MyGame_Example_Stat>>) -> EventLoopFuture<(StreamEvent<Message<MyGame_Example_Monster>>) -> Void>
+    public init(wrapping client: GRPCCore.GRPCClient<Transport>) {
+      self.client = client
     }
     
-public extension MyGame_Example_MonsterStorageProvider {
+    public func Store<Result>(
-
+      request: GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Stat>>,
-  var serviceName: Substring { return "MyGame.Example.MonsterStorage" }
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Stat>>,
-
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Stat>>,
-  func handle(method name: Substring, context: CallHandlerContext) -> GRPCServerHandlerProtocol? {
+      options: GRPCCore.CallOptions = .defaults,
-    switch name {
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result = { response in try response.message }
-    case "Store":
+    ) async throws -> Result where Result: Sendable {
-    return UnaryServerHandler(
+      try await self.client.unary(
-      context: context,
+        request: request,
-      requestDeserializer: GRPCPayloadDeserializer<Message<MyGame_Example_Monster>>(),
+        descriptor: MyGame_Example_MonsterStorage.Method.Store.descriptor,
-      responseSerializer: GRPCPayloadSerializer<Message<MyGame_Example_Stat>>(),
+        serializer: serializer,
-      interceptors: self.interceptors?.makeStoreInterceptors() ?? [],
+        deserializer: deserializer,
-      userFunction: self.Store(request:context:))
+        options: options,
-
+        onResponse: handleResponse
-    case "Retrieve":
+      )
-    return ServerStreamingServerHandler(
-      context: context,
-      requestDeserializer: GRPCPayloadDeserializer<Message<MyGame_Example_Stat>>(),
-      responseSerializer: GRPCPayloadSerializer<Message<MyGame_Example_Monster>>(),
-      interceptors: self.interceptors?.makeRetrieveInterceptors() ?? [],
-      userFunction: self.Retrieve(request:context:))
-
-    case "GetMaxHitPoint":
-    return ClientStreamingServerHandler(
-      context: context,
-      requestDeserializer: GRPCPayloadDeserializer<Message<MyGame_Example_Monster>>(),
-      responseSerializer: GRPCPayloadSerializer<Message<MyGame_Example_Stat>>(),
-      interceptors: self.interceptors?.makeGetMaxHitPointInterceptors() ?? [],
-      observerFactory: self.GetMaxHitPoint(context:))
-
-    case "GetMinMaxHitPoints":
-    return BidirectionalStreamingServerHandler(
-      context: context,
-      requestDeserializer: GRPCPayloadDeserializer<Message<MyGame_Example_Monster>>(),
-      responseSerializer: GRPCPayloadSerializer<Message<MyGame_Example_Stat>>(),
-      interceptors: self.interceptors?.makeGetMinMaxHitPointsInterceptors() ?? [],
-      observerFactory: self.GetMinMaxHitPoints(context:))
-
-    default: return nil;
     }
+    
+    public func Retrieve<Result>(
+      request: GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Monster>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Monster>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Monster>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Monster>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.serverStreaming(
+        request: request,
+        descriptor: MyGame_Example_MonsterStorage.Method.Retrieve.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+    public func GetMaxHitPoint<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Stat>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Stat>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result = { response in try response.message }
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.clientStreaming(
+        request: request,
+        descriptor: MyGame_Example_MonsterStorage.Method.GetMaxHitPoint.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+    public func GetMinMaxHitPoints<Result>(
+      request: GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+      serializer: some GRPCCore.MessageSerializer<GRPCMessage<MyGame_Example_Stat>>,
+      deserializer: some GRPCCore.MessageDeserializer<GRPCMessage<MyGame_Example_Stat>>,
+      options: GRPCCore.CallOptions = .defaults,
+      onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result
+    ) async throws -> Result where Result: Sendable {
+      try await self.client.bidirectionalStreaming(
+        request: request,
+        descriptor: MyGame_Example_MonsterStorage.Method.GetMinMaxHitPoints.descriptor,
+        serializer: serializer,
+        deserializer: deserializer,
+        options: options,
+        onResponse: handleResponse
+      )
+    }
+    
+  }
+}
+
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
+extension MyGame_Example_MonsterStorage.ClientProtocol {
+  public func Store<Result>(
+    request: GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result = { response in try response.message }
+  ) async throws -> Result where Result: Sendable {
+    try await self.Store(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Stat>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Stat>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func Retrieve<Result>(
+    request: GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Monster>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Monster>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    try await self.Retrieve(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Monster>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Monster>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func GetMaxHitPoint<Result>(
+    request: GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result = { response in try response.message }
+  ) async throws -> Result where Result: Sendable {
+    try await self.GetMaxHitPoint(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Stat>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Stat>>(),
+      options: options,
+      onResponse: handleResponse
+    )
+  }
+  
+  public func GetMinMaxHitPoints<Result>(
+    request: GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>,
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    try await self.GetMinMaxHitPoints(
+      request: request,
+      serializer: FlatBuffersMessageSerializer<GRPCMessage<MyGame_Example_Stat>>(),
+      deserializer: FlatBuffersMessageDeserializer<GRPCMessage<MyGame_Example_Stat>>(),
+      options: options,
+      onResponse: handleResponse
+    )
   }
   
 }
 
-public protocol MyGame_Example_MonsterStorageServerInterceptorFactoryProtocol {
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-  /// - Returns: Interceptors to use when handling 'Store'.
+extension MyGame_Example_MonsterStorage.ClientProtocol {
-  ///   Defaults to calling `self.makeInterceptors()`.
+  public func Store<Result>(
-  func makeStoreInterceptors() -> [ServerInterceptor<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>]
+    _ message: GRPCMessage<MyGame_Example_Stat>,
+    metadata: GRPCCore.Metadata = [:],
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result = { try $0.message }
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Stat>>(
+      message: message,
+      metadata: metadata
+    )
+    return try await self.Store(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
   
-  /// - Returns: Interceptors to use when handling 'Retrieve'.
+  public func Retrieve<Result>(
-  ///   Defaults to calling `self.makeInterceptors()`.
+    _ message: GRPCMessage<MyGame_Example_Monster>,
-  func makeRetrieveInterceptors() -> [ServerInterceptor<Message<MyGame_Example_Stat>, Message<MyGame_Example_Monster>>]
+    metadata: GRPCCore.Metadata = [:],
+    options: GRPCCore.CallOptions = .defaults,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Monster>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.ClientRequest<GRPCMessage<MyGame_Example_Monster>>(
+      message: message,
+      metadata: metadata
+    )
+    return try await self.Retrieve(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
   
-  /// - Returns: Interceptors to use when handling 'GetMaxHitPoint'.
+  public func GetMaxHitPoint<Result>(
-  ///   Defaults to calling `self.makeInterceptors()`.
+    metadata: GRPCCore.Metadata = [:],
-  func makeGetMaxHitPointInterceptors() -> [ServerInterceptor<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>]
+    options: GRPCCore.CallOptions = .defaults,
+    requestProducer producer: @Sendable @escaping (GRPCCore.RPCWriter<GRPCMessage<MyGame_Example_Stat>>) async throws -> Void,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.ClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result = { try $0.message }
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>(
+      metadata: metadata,
+      producer: producer
+    )
+    return try await self.GetMaxHitPoint(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
   
-  /// - Returns: Interceptors to use when handling 'GetMinMaxHitPoints'.
+  public func GetMinMaxHitPoints<Result>(
-  ///   Defaults to calling `self.makeInterceptors()`.
+    metadata: GRPCCore.Metadata = [:],
-  func makeGetMinMaxHitPointsInterceptors() -> [ServerInterceptor<Message<MyGame_Example_Monster>, Message<MyGame_Example_Stat>>]
+    options: GRPCCore.CallOptions = .defaults,
+    requestProducer producer: @Sendable @escaping (GRPCCore.RPCWriter<GRPCMessage<MyGame_Example_Stat>>) async throws -> Void,
+    onResponse handleResponse: @Sendable @escaping (GRPCCore.StreamingClientResponse<GRPCMessage<MyGame_Example_Stat>>) async throws -> Result
+  ) async throws -> Result where Result: Sendable {
+    let request = GRPCCore.StreamingClientRequest<GRPCMessage<MyGame_Example_Stat>>(
+      metadata: metadata,
+      producer: producer
+    )
+    return try await self.GetMinMaxHitPoints(
+      request: request,
+      options: options,
+      onResponse: handleResponse
+    )
+  }
   
 }
+
 #endif
 

tests/swift/Tests/Flatbuffers/monster_test_generated.swift

@@ -662,7 +662,7 @@ public struct MyGame_Example_StructOfStructsOfStructs_Mutable: FlatBufferStruct,
   }
 }
 
-public struct MyGame_InParentNamespace: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_InParentNamespace: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -712,7 +712,7 @@ public class MyGame_InParentNamespaceT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_InParentNamespace.self) }
 
 }
-public struct MyGame_Example2_Monster: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example2_Monster: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -762,7 +762,7 @@ public class MyGame_Example2_MonsterT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Example2_Monster.self) }
 
 }
-internal struct MyGame_Example_TestSimpleTableWithEnum: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+internal struct MyGame_Example_TestSimpleTableWithEnum: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   internal var __buffer: ByteBuffer! { return _accessor.bb }
@@ -840,7 +840,7 @@ internal class MyGame_Example_TestSimpleTableWithEnumT: NativeObject {
   internal func serialize() -> ByteBuffer { return serialize(type: MyGame_Example_TestSimpleTableWithEnum.self) }
 
 }
-public struct MyGame_Example_Stat: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_Stat: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -976,7 +976,7 @@ public class MyGame_Example_StatT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Example_Stat.self) }
 
 }
-public struct MyGame_Example_Referrable: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_Referrable: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -1079,7 +1079,7 @@ public class MyGame_Example_ReferrableT: NativeObject {
 
 }
 ///  an example documentation comment: "monster object"
-public struct MyGame_Example_Monster: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_Monster: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -2213,7 +2213,7 @@ public class MyGame_Example_MonsterT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Example_Monster.self) }
 
 }
-public struct MyGame_Example_TypeAliases: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_TypeAliases: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/more_defaults_generated.swift

@@ -31,7 +31,7 @@ extension ABC: Encodable {
   }
 }
 
-public struct MoreDefaults: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MoreDefaults: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/nan_inf_test_generated.swift

@@ -8,7 +8,7 @@ import Common
 
 import FlatBuffers
 
-public struct Swift_Tests_NanInfTable: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+public struct Swift_Tests_NanInfTable: FlatBufferVerifiableTable, FlatbuffersVectorInitializable {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/optional_scalars_generated.swift

@@ -31,7 +31,7 @@ extension optional_scalars_OptionalByte: Encodable {
   }
 }
 
-public struct optional_scalars_ScalarStuff: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+public struct optional_scalars_ScalarStuff: FlatBufferVerifiableTable, FlatbuffersVectorInitializable {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/union_vector_generated.swift

@@ -320,7 +320,7 @@ public struct FallingTub_Mutable: FlatBufferStruct, FlatbuffersVectorInitializab
   }
 }
 
-public struct Attacker: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct Attacker: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -398,7 +398,7 @@ public class AttackerT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: Attacker.self) }
 
 }
-public struct HandFan: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct HandFan: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -476,7 +476,7 @@ public class HandFanT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: HandFan.self) }
 
 }
-public struct Movie: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct Movie: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flatbuffers/vector_has_test_generated.swift

@@ -8,7 +8,7 @@ import Common
 
 import FlatBuffers
 
-public struct Swift_Tests_Vectors: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
+public struct Swift_Tests_Vectors: FlatBufferVerifiableTable, FlatbuffersVectorInitializable {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Tests/Flexbuffers/FlexBuffersJSONTests.swift

@@ -16,17 +16,19 @@
 
 import Common
 import FlexBuffers
-import XCTest
+import Foundation
+import Testing
 
-final class FlexBuffersJSONTests: XCTestCase {
+struct FlexBuffersJSONTests {
+  @Test
   func testEncodingJSON() throws {
     let buf: ByteBuffer = createProperBuffer().sizedByteBuffer
     let reference = try getRoot(buffer: buf)!
 
     let json = reference.jsonString()
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      json,
+      json ==
       "{\"bar\": [1, 2, 3], \"bar3\": [1, 2, 3], \"bool\": true, \"bools\": [true, false, true, false], \"foo\": 100.0, \"mymap\": {\"foo\": \"Fred\"}, \"vec\": [-100, \"Fred\", 4.0, \"M\", false, 4.0]}"
     )
     // swiftformat:enable all
@@ -37,15 +39,15 @@ final class FlexBuffersJSONTests: XCTestCase {
         with: data,
         options: []) as! [String: Any]
 
-    XCTAssertEqual(decodedData["bar"] as! [Int], [1, 2, 3])
+    #expect(decodedData["bar"] as! [Int] == [1, 2, 3])
-    XCTAssertEqual(decodedData["bar3"] as! [Int], [1, 2, 3])
+    #expect(decodedData["bar3"] as! [Int] == [1, 2, 3])
 
     let vec: [Any] = decodedData["vec"] as! [Any]
-    XCTAssertEqual(vec[0] as! Int, -100)
+    #expect(vec[0] as! Int == -100)
-    XCTAssertEqual(vec[1] as! String, "Fred")
+    #expect(vec[1] as! String == "Fred")
-    XCTAssertEqual(vec[2] as! Double, 4.0)
+    #expect(vec[2] as! Double == 4.0)
-    XCTAssertEqual(vec[3] as! String, "M")
+    #expect(vec[3] as! String == "M")
-    XCTAssertEqual(vec[4] as! Bool, false)
+    #expect(vec[4] as! Bool == false)
-    XCTAssertEqual(vec[5] as! Double, 4.0)
+    #expect(vec[5] as! Double == 4.0)
   }
 }

tests/swift/Tests/Flexbuffers/FlexBuffersReaderTests.swift

@@ -15,22 +15,26 @@
  */
 
 import Common
-import XCTest
+import Foundation
+import Testing
 
 @testable import FlexBuffers
 
-final class FlexBuffersReaderTests: XCTestCase {
+struct FlexBuffersReaderTests {
 
+  @Test
   func testReadingProperBuffer() throws {
     let buf: ByteBuffer = createProperBuffer().byteBuffer
     try validate(buffer: buf)
   }
 
+  @Test
   func testReadingSizedBuffer() throws {
     let buf: ByteBuffer = createSizedBuffer()
     try validate(buffer: buf)
   }
 
+  @Test(.bug("https://github.com/google/flatbuffers/issues/8642"))
   func testReset() throws {
     var fbx = FlexBuffersWriter(
       initialSize: 8,
@@ -38,87 +42,87 @@ final class FlexBuffersReaderTests: XCTestCase {
     write(fbx: &fbx)
 
     try validate(buffer: ByteBuffer(data: fbx.data))
-    XCTAssertEqual(fbx.capacity, 512)
+    #expect(fbx.capacity == 512)
     fbx.reset()
-    XCTAssertEqual(fbx.writerIndex, 0)
+    #expect(fbx.writerIndex == 0)
-    XCTAssertEqual(fbx.capacity, 8)
+    #expect(fbx.capacity == 8)
 
     write(fbx: &fbx)
     try validate(buffer: ByteBuffer(data: fbx.data))
     fbx.reset(keepingCapacity: true)
-    XCTAssertEqual(fbx.writerIndex, 0)
+    #expect(fbx.writerIndex == 0)
-    XCTAssertEqual(fbx.capacity, 512)
+    #expect(fbx.capacity == 512)
 
     write(fbx: &fbx)
     try validate(buffer: ByteBuffer(data: fbx.data))
-    XCTAssertEqual(fbx.capacity, 512)
+    #expect(fbx.capacity == 512)
   }
 
   private func validate(buffer buf: ByteBuffer) throws {
     let reference = try getRoot(buffer: buf)!
-    XCTAssertEqual(reference.type, .map)
+    #expect(reference.type == .map)
     let map = reference.map!
-    XCTAssertEqual(map.count, 7)
+    #expect(map.count == 7)
     let vecRef = map["vec"]!
-    XCTAssertEqual(vecRef.type, .vector)
+    #expect(vecRef.type == .vector)
     let vec = vecRef.vector!
-    XCTAssertEqual(vec.count, 6)
+    #expect(vec.count == 6)
-    XCTAssertEqual(vec[0]?.type, .int)
+    #expect(vec[0]?.type == .int)
-    XCTAssertEqual(vec[0]?.int, -100)
+    #expect(vec[0]?.int == -100)
-    XCTAssertEqual(vec[1]?.type, .string)
+    #expect(vec[1]?.type == .string)
-    XCTAssertEqual(vec[1]?.cString, "Fred")
+    #expect(vec[1]?.cString == "Fred")
-    XCTAssertNil(vec[1]?.int)
+    #expect(vec[1]?.int == nil)
-    XCTAssertEqual(vec[2]?.double, 4.0)
+    #expect(vec[2]?.double == 4.0)
-    XCTAssertTrue(vec[3]?.type == .blob)
+    #expect(vec[3]?.type == .blob)
 
     let blob = vec[3]!.blob { pointer in
       Array(pointer)
     }
 
-    XCTAssertEqual(blob?.count, 1)
+    #expect(blob?.count == 1)
-    XCTAssertEqual(blob?[0], 77)
+    #expect(blob?[0] == 77)
-    XCTAssertEqual(vec[4]?.type, .bool)
+    #expect(vec[4]?.type == .bool)
-    XCTAssertEqual(vec[4]?.bool, false)
+    #expect(vec[4]?.bool == false)
-    XCTAssertEqual(vec[5]?.double, 4.0)  // Shared with vec[2]
+    #expect(vec[5]?.double == 4.0)  // Shared with vec[2]
 
     let barVec = map["bar"]!.typedVector!
-    XCTAssertEqual(barVec.count, 3)
+    #expect(barVec.count == 3)
-    XCTAssertEqual(barVec[2]?.int, 3)
+    #expect(barVec[2]?.int == 3)
-    XCTAssertEqual(barVec[2]?.asInt(), UInt8(3))
+    #expect(barVec[2]?.asInt() == UInt8(3))
 
     let fixedVec = map["bar3"]!.fixedTypedVector!
-    XCTAssertEqual(fixedVec.count, 3)
+    #expect(fixedVec.count == 3)
-    XCTAssertEqual(fixedVec[2]?.int, 3)
+    #expect(fixedVec[2]?.int == 3)
-    XCTAssertEqual(fixedVec[2]?.asInt(), UInt8(3))
+    #expect(fixedVec[2]?.asInt() == UInt8(3))
-    XCTAssertEqual(map["bool"]?.bool, true)
+    #expect(map["bool"]?.bool == true)
 
     let boolsVector = map["bools"]!.typedVector!
-    XCTAssertEqual(boolsVector.type, .bool)
+    #expect(boolsVector.type == .bool)
-    XCTAssertEqual(boolsVector[0]?.bool, true)
+    #expect(boolsVector[0]?.bool == true)
-    XCTAssertEqual(boolsVector[1]?.bool, false)
+    #expect(boolsVector[1]?.bool == false)
 
     let bools = [true, false, true, false]
     boolsVector.withUnsafeRawBufferPointer { buff in
       for i in 0..<boolsVector.count {
-        XCTAssertEqual(buff.load(fromByteOffset: i, as: Bool.self), bools[i])
+        #expect(buff.load(fromByteOffset: i, as: Bool.self) == bools[i])
       }
     }
-    XCTAssertEqual(map["foo"]?.double, 100)
+    #expect(map["foo"]?.double == 100)
-    XCTAssertNil(map["unknown"])
+    #expect(map["unknown"] == nil)
     let mymap = map["mymap"]?.map
 
     // Check if both addresses used are the same for keys and strings
-    XCTAssertEqual(mymap?.keys[0]?.cString, map.keys[4]?.cString)
+    #expect(mymap?.keys[0]?.cString == map.keys[4]?.cString)
     map.keys[4]?.withUnsafeRawPointer { pointer in
       mymap?.keys[0]?.withUnsafeRawPointer { mymapPointer in
-        XCTAssertEqual(pointer, mymapPointer)
+        #expect(pointer == mymapPointer)
       }
     }
 
-    XCTAssertEqual(mymap?.values[0]?.cString, vec[1]?.cString)
+    #expect(mymap?.values[0]?.cString == vec[1]?.cString)
     vec[1]?.withUnsafeRawPointer { pointer in
       mymap?.values[0]?.withUnsafeRawPointer { mymapPointer in
-        XCTAssertEqual(pointer, mymapPointer)
+        #expect(pointer == mymapPointer)
       }
     }
   }
@@ -127,7 +131,7 @@ final class FlexBuffersReaderTests: XCTestCase {
     #if os(macOS)
     // Gets the current path of this test file then
     // strips out the nested directories.
-    let filePath = URL(filePath: #file)
+    let filePath = URL(filePath: #filePath)
       .deletingLastPathComponent()
       .deletingLastPathComponent()
       .deletingLastPathComponent()
@@ -136,5 +140,4 @@ final class FlexBuffersReaderTests: XCTestCase {
     return FileManager.default.currentDirectoryPath
     #endif
   }
-
 }

tests/swift/Tests/Flexbuffers/FlexBuffersStringTests.swift

@@ -16,10 +16,12 @@
 
 import Common
 import FlexBuffers
-import XCTest
+import Foundation
+import Testing
 
-final class FlexBuffersStringTests: XCTestCase {
+struct FlexBuffersStringTests {
 
+  @Test
   func testEncodingUnicodeString() {
     let text = "プ画をみて✋"
 
@@ -38,6 +40,6 @@ final class FlexBuffersStringTests: XCTestCase {
       return String(data: data, encoding: .unicode)
     }
 
-    XCTAssertEqual(builtString, text)
+    #expect(builtString == text)
   }
 }

tests/swift/Tests/Flexbuffers/FlexBuffersWriterTests.swift

@@ -16,9 +16,10 @@
 
 import Common
 import FlexBuffers
-import XCTest
+import Testing
 
-final class FlexBuffersWriterTests: XCTestCase {
+struct FlexBuffersWriterTests {
+  @Test
   func testDeallocation() {
     let buf: ByteBuffer = {
       var fbx = FlexBuffersWriter()
@@ -28,12 +29,13 @@ final class FlexBuffersWriterTests: XCTestCase {
     }()
 
     buf.withUnsafeBytes {
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
           [5, 72, 101, 108, 108, 111, 0, 6, 20, 1])
     }
   }
 
+  @Test
   func testAddingVectorOfScalars() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -45,8 +47,8 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           10, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 6, 0, 0, 0, 7, 0,
           0, 0, 8, 0, 0, 0, 9, 0, 0, 0, 20, 0, 0, 0, 1, 41, 46, 2, 40, 1,
@@ -55,6 +57,7 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testAddingVectorOfUnsignedScalars() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -66,8 +69,8 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           10, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0,
           0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0,
@@ -78,6 +81,7 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testAddingVectorOfBools() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -89,13 +93,14 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [4, 1, 0, 1, 0, 1, 5, 144, 2, 40, 1])
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testSortingWithinMap() {
     var fbx = FlexBuffersWriter()
     fbx.map {
@@ -106,8 +111,8 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           98, 111, 111, 108, 50, 0, 98, 111, 111, 108, 49, 0, 2, 7, 14, 2, 1, 2, 1, 0, 104, 104, 4,
           36, 1,
@@ -117,6 +122,7 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testSharingKeyWithinMap() {
     var fbx = FlexBuffersWriter(initialSize: 1000, flags: .shareKeysAndStrings)
     fbx.map {
@@ -128,8 +134,8 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           119, 101, 108, 99, 111, 109, 101, 0, 7, 119, 101, 108, 99, 111, 109, 101, 0, 3, 18, 19,
           20, 3, 1, 3, 15, 16, 17, 20, 20, 20, 6, 36, 1,
@@ -139,19 +145,21 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testNestingVectorInMap() {
     let buf: ByteBuffer = createSizedBuffer()
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         flexbufferGolden
       )
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testAddingNil() {
     var fbx = FlexBuffersWriter(
       initialSize: 8,
@@ -165,14 +173,15 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [118, 0, 1, 3, 1, 1, 1, 0, 0, 2, 36, 1]
       )
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testAddingManually() {
     var fbx = FlexBuffersWriter(
       initialSize: 8,
@@ -209,14 +218,15 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         flexbufferGolden
       )
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testEncodingAllTypes() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -240,8 +250,8 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         allTypesGolden)
       // swiftformat:enable all
     }

tests/swift/Wasm.tests/Tests/FlatBuffers.Test.Swift.WasmTests/FlatBuffersMonsterWriterTests.swift

@@ -15,7 +15,7 @@
  */
 
 import Foundation
-import XCTest
+import Testing
 
 @testable import FlatBuffers
 
@@ -24,8 +24,9 @@ typealias Monster = MyGame_Example_Monster
 typealias Vec3 = MyGame_Example_Vec3
 typealias Stat = MyGame_Example_Stat
 
-class FlatBuffersMonsterWriterTests: XCTestCase {
+struct FlatBuffersMonsterWriterTests {
 
+  @Test
   func testData() {
     // swiftformat:disable all
     let data: [UInt8] = [
@@ -47,11 +48,12 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readVerifiedMonster(fb: _data)
   }
 
+  @Test
   func testCreateMonster() {
     let bytes = createMonster(withPrefix: false)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      bytes.sizedByteArray,
+      bytes.sizedByteArray ==
       [
         48, 0, 0, 0, 77, 79, 78, 83, 0, 0, 0, 0, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28,
         0, 0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0,
@@ -75,11 +77,12 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readMonster(monster: monster)
   }
 
+  @Test
   func testCreateMonsterResizedBuffer() {
     let bytes = createMonster(withPrefix: false)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      bytes.sizedByteArray,
+      bytes.sizedByteArray ==
       [
         48, 0, 0, 0, 77, 79, 78, 83, 0, 0, 0, 0, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28,
         0, 0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0,
@@ -98,11 +101,12 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readVerifiedMonster(fb: bytes.sizedBuffer)
   }
 
+  @Test
   func testCreateMonsterPrefixed() {
     let bytes = createMonster(withPrefix: true)
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      bytes.sizedByteArray,
+      bytes.sizedByteArray ==
       [
         44, 1, 0, 0, 44, 0, 0, 0, 77, 79, 78, 83, 36, 0, 72, 0, 40, 0, 0, 0, 38, 0, 32, 0, 0, 0, 28,
         0, 0, 0, 27, 0, 20, 0, 16, 0, 12, 0, 4, 0, 0, 0, 0, 0, 0, 0, 11, 0, 36, 0, 0, 0, 164, 0, 0,
@@ -123,6 +127,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readMonster(monster: getPrefixedSizeRoot(byteBuffer: &buffer))
   }
 
+  @Test
   func testCreateMonsterUsingCreateMonsterMethodWithNilPos() {
     var fbb = FlatBufferBuilder(initialSize: 1)
     let name = fbb.create(string: "Frodo")
@@ -132,10 +137,11 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     fbb.finish(offset: root)
     var buffer = fbb.sizedBuffer
     let newMonster: Monster = getRoot(byteBuffer: &buffer)
-    XCTAssertNil(newMonster.pos)
+    #expect(newMonster.pos == nil)
-    XCTAssertEqual(newMonster.name, "Frodo")
+    #expect(newMonster.name == "Frodo")
   }
 
+  @Test
   func testCreateMonsterUsingCreateMonsterMethodWithPosX() {
     var fbb = FlatBufferBuilder(initialSize: 1)
     let name = fbb.create(string: "Barney")
@@ -155,10 +161,11 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
 
     var buffer = fbb.sizedBuffer
     let newMonster: Monster = getRoot(byteBuffer: &buffer)
-    XCTAssertEqual(newMonster.pos!.x, 10)
+    #expect(newMonster.pos!.x == 10)
-    XCTAssertEqual(newMonster.name, "Barney")
+    #expect(newMonster.name == "Barney")
   }
 
+  @Test
   func testReadMonsterFromUnsafePointerWithoutCopying() {
     // swiftformat:disable all
     var array: [UInt8] = [
@@ -190,6 +197,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     readObjectApi(monster: unpacked)
   }
 
+  @Test
   func testArrayOfBools() {
     let boolArray = [false, true, false, true, false, true, false]
     var fbb = FlatBufferBuilder(initialSize: 1)
@@ -205,37 +213,41 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     let monster: Monster = getRoot(byteBuffer: &buffer)
     let values = monster.testarrayofbools
 
-    XCTAssertEqual(boolArray.count, values.count)
+    #expect(boolArray.count == values.count)
 
     for (index, bool) in monster.testarrayofbools.enumerated() {
-      XCTAssertEqual(bool, boolArray[index])
+      #expect(bool == boolArray[index])
     }
   }
 
   func readVerifiedMonster(fb: ByteBuffer) {
     var byteBuffer = fb
-    XCTAssertNoThrow(
+    do {
       try readMonster(
         monster: getCheckedRoot(
-          byteBuffer: &byteBuffer) as MyGame_Example_Monster))
+          byteBuffer: &byteBuffer) as MyGame_Example_Monster)
+    } catch {
+      Issue.record(error)
+    }
   }
 
+  @Test(.bug("https://github.com/google/flatbuffers/issues/8133"))
   func testUnalignedRead() {
     // Aligned read
     let fbb = createMonster(withPrefix: false)
     let testAligned: () -> Bool = {
       var buffer = fbb.sizedBuffer
       var monster: Monster = getRoot(byteBuffer: &buffer)
-      self.readFlatbufferMonster(monster: &monster)
+      readFlatbufferMonster(monster: &monster)
       return true
     }
-    XCTAssertEqual(testAligned(), true)
+    #expect(testAligned() == true)
     let testUnaligned: () -> Bool = {
       var bytes: [UInt8] = [0x00]
       bytes.append(contentsOf: fbb.sizedByteArray)
       return bytes.withUnsafeMutableBytes { ptr in
         guard var baseAddress = ptr.baseAddress else {
-          XCTFail("Base pointer is not defined")
+          Issue.record("Base pointer is not defined")
           return false
         }
         baseAddress = baseAddress.advanced(by: 1)
@@ -244,13 +256,14 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
           assumingMemoryBound: unlignedPtr,
           capacity: ptr.count - 1)
         var monster: Monster = getRoot(byteBuffer: &bytes)
-        self.readFlatbufferMonster(monster: &monster)
+        readFlatbufferMonster(monster: &monster)
         return true
       }
     }
-    XCTAssertEqual(testUnaligned(), true)
+    #expect(testUnaligned() == true)
   }
 
+  @Test
   func testReadingRemovedSizeUnalignedBuffer() {
     // Aligned read
     let fbb = createMonster(withPrefix: true)
@@ -259,7 +272,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
       bytes.append(contentsOf: fbb.sizedByteArray)
       return bytes.withUnsafeMutableBytes { ptr in
         guard var baseAddress = ptr.baseAddress else {
-          XCTFail("Base pointer is not defined")
+          Issue.record("Base pointer is not defined")
           return false
         }
         baseAddress = baseAddress.advanced(by: 1)
@@ -269,13 +282,14 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
           capacity: ptr.count - 1)
         var newBuf = FlatBuffersUtils.removeSizePrefix(bb: bytes)
         var monster: Monster = getRoot(byteBuffer: &newBuf)
-        self.readFlatbufferMonster(monster: &monster)
+        readFlatbufferMonster(monster: &monster)
         return true
       }
     }
-    XCTAssertEqual(testUnaligned(), true)
+    #expect(testUnaligned() == true)
   }
 
+  @Test
   func testForceRetainedObject() {
     let byteBuffer = {
       // swiftformat:disable all
@@ -381,95 +395,95 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     var fb = fb
 
     let monster: Monster = getRoot(byteBuffer: &fb)
-    XCTAssertFalse(monster.mutate(mana: 10))
+    #expect(monster.mutate(mana: 10) == false)
-    XCTAssertEqual(monster.testarrayoftables[0].name, "Barney")
+    #expect(monster.testarrayoftables[0].name == "Barney")
-    XCTAssertEqual(monster.testarrayoftables[1].name, "Frodo")
+    #expect(monster.testarrayoftables[1].name == "Frodo")
-    XCTAssertEqual(monster.testarrayoftables[2].name, "Wilma")
+    #expect(monster.testarrayoftables[2].name == "Wilma")
 
     // Example of searching for a table by the key
-    XCTAssertNotNil(monster.testarrayoftablesBy(key: "Frodo"))
+    #expect(monster.testarrayoftablesBy(key: "Frodo") != nil)
-    XCTAssertNotNil(monster.testarrayoftablesBy(key: "Barney"))
+    #expect(monster.testarrayoftablesBy(key: "Barney") != nil)
-    XCTAssertNotNil(monster.testarrayoftablesBy(key: "Wilma"))
+    #expect(monster.testarrayoftablesBy(key: "Wilma") != nil)
 
-    XCTAssertEqual(monster.testType, .monster)
+    #expect(monster.testType == .monster)
 
-    XCTAssertEqual(monster.mutate(inventory: 1, at: 0), true)
+    #expect(monster.mutate(inventory: 1, at: 0) == true)
-    XCTAssertEqual(monster.mutate(inventory: 2, at: 1), true)
+    #expect(monster.mutate(inventory: 2, at: 1) == true)
-    XCTAssertEqual(monster.mutate(inventory: 3, at: 2), true)
+    #expect(monster.mutate(inventory: 3, at: 2) == true)
-    XCTAssertEqual(monster.mutate(inventory: 4, at: 3), true)
+    #expect(monster.mutate(inventory: 4, at: 3) == true)
-    XCTAssertEqual(monster.mutate(inventory: 5, at: 4), true)
+    #expect(monster.mutate(inventory: 5, at: 4) == true)
 
     for i in 0..<monster.inventory.count {
-      XCTAssertEqual(monster.inventory[i], Byte(i + 1))
+      #expect(monster.inventory[i] == Byte(i + 1))
     }
 
-    XCTAssertEqual(monster.mutate(inventory: 0, at: 0), true)
+    #expect(monster.mutate(inventory: 0, at: 0) == true)
-    XCTAssertEqual(monster.mutate(inventory: 1, at: 1), true)
+    #expect(monster.mutate(inventory: 1, at: 1) == true)
-    XCTAssertEqual(monster.mutate(inventory: 2, at: 2), true)
+    #expect(monster.mutate(inventory: 2, at: 2) == true)
-    XCTAssertEqual(monster.mutate(inventory: 3, at: 3), true)
+    #expect(monster.mutate(inventory: 3, at: 3) == true)
-    XCTAssertEqual(monster.mutate(inventory: 4, at: 4), true)
+    #expect(monster.mutate(inventory: 4, at: 4) == true)
 
     let vec = monster.mutablePos
-    XCTAssertEqual(vec?.x, 1)
+    #expect(vec?.x == 1)
-    XCTAssertTrue(vec?.mutate(x: 55.0) ?? false)
+    #expect(vec?.mutate(x: 55.0) == true)
-    XCTAssertTrue(vec?.mutate(test1: 55) ?? false)
+    #expect(vec?.mutate(test1: 55) == true)
-    XCTAssertEqual(vec?.x, 55.0)
+    #expect(vec?.x == 55.0)
-    XCTAssertEqual(vec?.test1, 55.0)
+    #expect(vec?.test1 == 55.0)
-    XCTAssertTrue(vec?.mutate(x: 1) ?? false)
+    #expect(vec?.mutate(x: 1) == true)
-    XCTAssertEqual(vec?.x, 1)
+    #expect(vec?.x == 1)
-    XCTAssertTrue(vec?.mutate(test1: 3) ?? false)
+    #expect(vec?.mutate(test1: 3) == true)
 
     let mutableTest4 = monster.mutableTest4
     let orignalValues = mutableTest4[0].a
-    XCTAssertEqual(mutableTest4[0].mutate(a: 100), true)
+    #expect(mutableTest4[0].mutate(a: 100) == true)
-    XCTAssertNotEqual(monster.test4[0].a, orignalValues)
+    #expect(monster.test4[0].a != orignalValues)
-    XCTAssertEqual(monster.test4[0].a, 100)
+    #expect(monster.test4[0].a == 100)
-    XCTAssertEqual(mutableTest4[0].mutate(a: orignalValues), true)
+    #expect(mutableTest4[0].mutate(a: orignalValues) == true)
   }
 
   func readFlatbufferMonster(monster: inout MyGame_Example_Monster) {
-    XCTAssertEqual(monster.hp, 80)
+    #expect(monster.hp == 80)
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
-    XCTAssertEqual(monster.name, "MyMonster")
+    #expect(monster.name == "MyMonster")
     let pos = monster.pos
-    XCTAssertEqual(pos?.x, 1)
+    #expect(pos?.x == 1)
-    XCTAssertEqual(pos?.y, 2)
+    #expect(pos?.y == 2)
-    XCTAssertEqual(pos?.z, 3)
+    #expect(pos?.z == 3)
-    XCTAssertEqual(pos?.test1, 3)
+    #expect(pos?.test1 == 3)
-    XCTAssertEqual(pos?.test2, .green)
+    #expect(pos?.test2 == .green)
     let test = pos?.test3
-    XCTAssertEqual(test?.a, 5)
+    #expect(test?.a == 5)
-    XCTAssertEqual(test?.b, 6)
+    #expect(test?.b == 6)
-    XCTAssertEqual(monster.testType, .monster)
+    #expect(monster.testType == .monster)
     let monster2 = monster.test(type: Monster.self)
-    XCTAssertEqual(monster2?.name, "Fred")
+    #expect(monster2?.name == "Fred")
 
-    XCTAssertEqual(monster.mutate(mana: 10), false)
+    #expect(monster.mutate(mana: 10) == false)
 
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
-    XCTAssertEqual(monster.inventory.count, 5)
+    #expect(monster.inventory.count == 5)
     var sum: Byte = 0
     for inventory in monster.inventory {
       sum += inventory
     }
-    XCTAssertEqual(sum, 10)
+    #expect(sum == 10)
 
     monster.withUnsafePointerToInventory { ptr, count in
       var sum: UInt8 = 0
       for pointee in ptr.startIndex..<ptr.endIndex {
         sum += ptr[pointee]
       }
-      XCTAssertEqual(sum, 10)
+      #expect(sum == 10)
     }
 
-    XCTAssertEqual(monster.test4.count, 2)
+    #expect(monster.test4.count == 2)
 
     let test4 = monster.test4
     var sum0 = 0
     for test0 in test4 {
       sum0 += Int(test0.a) + Int(test0.b)
     }
-    XCTAssertEqual(sum0, 100)
+    #expect(sum0 == 100)
 
     monster.withUnsafePointerToTest4 { ptr, count in
       guard let ptr = ptr.baseAddress else { return }
@@ -485,7 +499,7 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
         pointerSum += Int(bindedMemory[pointee].a) +
           Int(bindedMemory[pointee].b)
       }
-      XCTAssertEqual(pointerSum, 100)
+      #expect(pointerSum == 100)
     }
 
     let mutableTest4 = monster.mutableTest4
@@ -493,64 +507,64 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     for test0 in mutableTest4 {
       sum2 += Int(test0.a) + Int(test0.b)
     }
-    XCTAssertEqual(sum2, 100)
+    #expect(sum2 == 100)
 
     let stringArray = monster.testarrayofstring
-    XCTAssertEqual(stringArray.count, 2)
+    #expect(stringArray.count == 2)
-    XCTAssertEqual(stringArray[0], "test1")
+    #expect(stringArray[0] == "test1")
-    XCTAssertEqual(stringArray[1], "test2")
+    #expect(stringArray[1] == "test2")
-    XCTAssertEqual(monster.testbool, true)
+    #expect(monster.testbool == true)
 
     let array = monster.nameSegmentArray
-    XCTAssertEqual(String(bytes: array ?? [], encoding: .utf8), "MyMonster")
+    #expect(String(bytes: array ?? [], encoding: .utf8) == "MyMonster")
 
     if 0 == monster.testarrayofbools.count {
-      XCTAssertEqual(monster.testarrayofbools.isEmpty, true)
+      #expect(monster.testarrayofbools.isEmpty == true)
     } else {
-      XCTAssertEqual(monster.testarrayofbools.isEmpty, false)
+      #expect(monster.testarrayofbools.isEmpty == false)
     }
   }
 
   func readObjectApi(monster: MyGame_Example_MonsterT) {
-    XCTAssertEqual(monster.hp, 80)
+    #expect(monster.hp == 80)
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
-    XCTAssertEqual(monster.name, "MyMonster")
+    #expect(monster.name == "MyMonster")
     let pos = monster.pos
-    XCTAssertEqual(pos?.x, 1)
+    #expect(pos?.x == 1)
-    XCTAssertEqual(pos?.y, 2)
+    #expect(pos?.y == 2)
-    XCTAssertEqual(pos?.z, 3)
+    #expect(pos?.z == 3)
-    XCTAssertEqual(pos?.test1, 3)
+    #expect(pos?.test1 == 3)
-    XCTAssertEqual(pos?.test2, .green)
+    #expect(pos?.test2 == .green)
     let test = pos?.test3
-    XCTAssertEqual(test?.a, 5)
+    #expect(test?.a == 5)
-    XCTAssertEqual(test?.b, 6)
+    #expect(test?.b == 6)
     let monster2 = monster.test?.value as? MyGame_Example_MonsterT
-    XCTAssertEqual(monster2?.name, "Fred")
+    #expect(monster2?.name == "Fred")
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
     monster.mana = 10
-    XCTAssertEqual(monster.mana, 10)
+    #expect(monster.mana == 10)
     monster.mana = 150
-    XCTAssertEqual(monster.mana, 150)
+    #expect(monster.mana == 150)
 
-    XCTAssertEqual(monster.inventory.count, 5)
+    #expect(monster.inventory.count == 5)
     var sum: Byte = 0
     for i in monster.inventory {
       sum += i
     }
-    XCTAssertEqual(sum, 10)
+    #expect(sum == 10)
-    XCTAssertEqual(monster.test4.count, 2)
+    #expect(monster.test4.count == 2)
     var sum0 = 0
     for test in monster.test4 {
       sum0 += Int(test.a) + Int(test.b)
     }
-    XCTAssertEqual(sum0, 100)
+    #expect(sum0 == 100)
-    XCTAssertEqual(monster.testbool, true)
+    #expect(monster.testbool == true)
   }
 
-  func testEncoding() {
+  @Test
+  func testEncoding() throws {
     let fbb = createMonster(withPrefix: false)
     var sizedBuffer = fbb.sizedBuffer
-    do {
     struct Test: Decodable {
       struct Pos: Decodable {
         let x, y, z: Int
@@ -567,13 +581,10 @@ class FlatBuffersMonsterWriterTests: XCTestCase {
     let decoder = JSONDecoder()
     decoder.keyDecodingStrategy = .convertFromSnakeCase
     let value = try decoder.decode(Test.self, from: data)
-      XCTAssertEqual(value.name, "MyMonster")
+    #expect(value.name == "MyMonster")
-      XCTAssertEqual(value.pos.x, 1)
+    #expect(value.pos.x == 1)
-      XCTAssertEqual(value.pos.y, 2)
+    #expect(value.pos.y == 2)
-      XCTAssertEqual(value.pos.z, 3)
+    #expect(value.pos.z == 3)
-    } catch {
-      XCTFail(error.localizedDescription)
-    }
   }
 
   var jsonData: String {

tests/swift/Wasm.tests/Tests/FlatBuffers.Test.Swift.WasmTests/monster_test_generated.swift

@@ -662,7 +662,7 @@ public struct MyGame_Example_StructOfStructsOfStructs_Mutable: FlatBufferStruct,
   }
 }
 
-public struct MyGame_InParentNamespace: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_InParentNamespace: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -712,7 +712,7 @@ public class MyGame_InParentNamespaceT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_InParentNamespace.self) }
 
 }
-public struct MyGame_Example2_Monster: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example2_Monster: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -762,7 +762,7 @@ public class MyGame_Example2_MonsterT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Example2_Monster.self) }
 
 }
-internal struct MyGame_Example_TestSimpleTableWithEnum: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+internal struct MyGame_Example_TestSimpleTableWithEnum: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   internal var __buffer: ByteBuffer! { return _accessor.bb }
@@ -840,7 +840,7 @@ internal class MyGame_Example_TestSimpleTableWithEnumT: NativeObject {
   internal func serialize() -> ByteBuffer { return serialize(type: MyGame_Example_TestSimpleTableWithEnum.self) }
 
 }
-public struct MyGame_Example_Stat: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_Stat: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -976,7 +976,7 @@ public class MyGame_Example_StatT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Example_Stat.self) }
 
 }
-public struct MyGame_Example_Referrable: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_Referrable: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -1079,7 +1079,7 @@ public class MyGame_Example_ReferrableT: NativeObject {
 
 }
 ///  an example documentation comment: "monster object"
-public struct MyGame_Example_Monster: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_Monster: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -2213,7 +2213,7 @@ public class MyGame_Example_MonsterT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: MyGame_Example_Monster.self) }
 
 }
-public struct MyGame_Example_TypeAliases: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct MyGame_Example_TypeAliases: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/Wasm.tests/Tests/FlexBuffers.Test.Swift.WasmTests/FlexBuffersJSONTests.swift

@@ -16,17 +16,19 @@
 
 import Common
 import FlexBuffers
-import XCTest
+import Foundation
+import Testing
 
-final class FlexBuffersJSONTests: XCTestCase {
+struct FlexBuffersJSONTests {
+  @Test
   func testEncodingJSON() throws {
     let buf: ByteBuffer = createProperBuffer().sizedByteBuffer
     let reference = try getRoot(buffer: buf)!
 
     let json = reference.jsonString()
     // swiftformat:disable all
-    XCTAssertEqual(
+    #expect(
-      json,
+      json ==
       "{\"bar\": [1, 2, 3], \"bar3\": [1, 2, 3], \"bool\": true, \"bools\": [true, false, true, false], \"foo\": 100.0, \"mymap\": {\"foo\": \"Fred\"}, \"vec\": [-100, \"Fred\", 4.0, \"M\", false, 4.0]}"
     )
     // swiftformat:enable all
@@ -37,15 +39,15 @@ final class FlexBuffersJSONTests: XCTestCase {
         with: data,
         options: []) as! [String: Any]
 
-    XCTAssertEqual(decodedData["bar"] as! [Int], [1, 2, 3])
+    #expect(decodedData["bar"] as! [Int] == [1, 2, 3])
-    XCTAssertEqual(decodedData["bar3"] as! [Int], [1, 2, 3])
+    #expect(decodedData["bar3"] as! [Int] == [1, 2, 3])
 
     let vec: [Any] = decodedData["vec"] as! [Any]
-    XCTAssertEqual(vec[0] as! Int, -100)
+    #expect(vec[0] as! Int == -100)
-    XCTAssertEqual(vec[1] as! String, "Fred")
+    #expect(vec[1] as! String == "Fred")
-    XCTAssertEqual(vec[2] as! Double, 4.0)
+    #expect(vec[2] as! Double == 4.0)
-    XCTAssertEqual(vec[3] as! String, "M")
+    #expect(vec[3] as! String == "M")
-    XCTAssertEqual(vec[4] as! Bool, false)
+    #expect(vec[4] as! Bool == false)
-    XCTAssertEqual(vec[5] as! Double, 4.0)
+    #expect(vec[5] as! Double == 4.0)
   }
 }

tests/swift/Wasm.tests/Tests/FlexBuffers.Test.Swift.WasmTests/FlexBuffersReaderTests.swift

@@ -15,22 +15,26 @@
  */
 
 import Common
-import XCTest
+import Foundation
+import Testing
 
 @testable import FlexBuffers
 
-final class FlexBuffersReaderTests: XCTestCase {
+struct FlexBuffersReaderTests {
 
+  @Test
   func testReadingProperBuffer() throws {
     let buf: ByteBuffer = createProperBuffer().byteBuffer
     try validate(buffer: buf)
   }
 
+  @Test
   func testReadingSizedBuffer() throws {
     let buf: ByteBuffer = createSizedBuffer()
     try validate(buffer: buf)
   }
 
+  @Test(.bug("https://github.com/google/flatbuffers/issues/8642"))
   func testReset() throws {
     var fbx = FlexBuffersWriter(
       initialSize: 8,
@@ -38,87 +42,87 @@ final class FlexBuffersReaderTests: XCTestCase {
     write(fbx: &fbx)
 
     try validate(buffer: ByteBuffer(bytes: fbx.sizedByteArray))
-    XCTAssertEqual(fbx.capacity, 512)
+    #expect(fbx.capacity == 512)
     fbx.reset()
-    XCTAssertEqual(fbx.writerIndex, 0)
+    #expect(fbx.writerIndex == 0)
-    XCTAssertEqual(fbx.capacity, 8)
+    #expect(fbx.capacity == 8)
 
     write(fbx: &fbx)
     try validate(buffer: ByteBuffer(bytes: fbx.sizedByteArray))
     fbx.reset(keepingCapacity: true)
-    XCTAssertEqual(fbx.writerIndex, 0)
+    #expect(fbx.writerIndex == 0)
-    XCTAssertEqual(fbx.capacity, 512)
+    #expect(fbx.capacity == 512)
 
     write(fbx: &fbx)
     try validate(buffer: ByteBuffer(bytes: fbx.sizedByteArray))
-    XCTAssertEqual(fbx.capacity, 512)
+    #expect(fbx.capacity == 512)
   }
 
   private func validate(buffer buf: ByteBuffer) throws {
     let reference = try getRoot(buffer: buf)!
-    XCTAssertEqual(reference.type, .map)
+    #expect(reference.type == .map)
     let map = reference.map!
-    XCTAssertEqual(map.count, 7)
+    #expect(map.count == 7)
     let vecRef = map["vec"]!
-    XCTAssertEqual(vecRef.type, .vector)
+    #expect(vecRef.type == .vector)
     let vec = vecRef.vector!
-    XCTAssertEqual(vec.count, 6)
+    #expect(vec.count == 6)
-    XCTAssertEqual(vec[0]?.type, .int)
+    #expect(vec[0]?.type == .int)
-    XCTAssertEqual(vec[0]?.int, -100)
+    #expect(vec[0]?.int == -100)
-    XCTAssertEqual(vec[1]?.type, .string)
+    #expect(vec[1]?.type == .string)
-    XCTAssertEqual(vec[1]?.cString, "Fred")
+    #expect(vec[1]?.cString == "Fred")
-    XCTAssertNil(vec[1]?.int)
+    #expect(vec[1]?.int == nil)
-    XCTAssertEqual(vec[2]?.double, 4.0)
+    #expect(vec[2]?.double == 4.0)
-    XCTAssertTrue(vec[3]?.type == .blob)
+    #expect(vec[3]?.type == .blob)
 
     let blob = vec[3]!.blob { pointer in
       Array(pointer)
     }
 
-    XCTAssertEqual(blob?.count, 1)
+    #expect(blob?.count == 1)
-    XCTAssertEqual(blob?[0], 77)
+    #expect(blob?[0] == 77)
-    XCTAssertEqual(vec[4]?.type, .bool)
+    #expect(vec[4]?.type == .bool)
-    XCTAssertEqual(vec[4]?.bool, false)
+    #expect(vec[4]?.bool == false)
-    XCTAssertEqual(vec[5]?.double, 4.0)  // Shared with vec[2]
+    #expect(vec[5]?.double == 4.0)  // Shared with vec[2]
 
     let barVec = map["bar"]!.typedVector!
-    XCTAssertEqual(barVec.count, 3)
+    #expect(barVec.count == 3)
-    XCTAssertEqual(barVec[2]?.int, 3)
+    #expect(barVec[2]?.int == 3)
-    XCTAssertEqual(barVec[2]?.asInt(), UInt8(3))
+    #expect(barVec[2]?.asInt() == UInt8(3))
 
     let fixedVec = map["bar3"]!.fixedTypedVector!
-    XCTAssertEqual(fixedVec.count, 3)
+    #expect(fixedVec.count == 3)
-    XCTAssertEqual(fixedVec[2]?.int, 3)
+    #expect(fixedVec[2]?.int == 3)
-    XCTAssertEqual(fixedVec[2]?.asInt(), UInt8(3))
+    #expect(fixedVec[2]?.asInt() == UInt8(3))
-    XCTAssertEqual(map["bool"]?.bool, true)
+    #expect(map["bool"]?.bool == true)
 
     let boolsVector = map["bools"]!.typedVector!
-    XCTAssertEqual(boolsVector.type, .bool)
+    #expect(boolsVector.type == .bool)
-    XCTAssertEqual(boolsVector[0]?.bool, true)
+    #expect(boolsVector[0]?.bool == true)
-    XCTAssertEqual(boolsVector[1]?.bool, false)
+    #expect(boolsVector[1]?.bool == false)
 
     let bools = [true, false, true, false]
     boolsVector.withUnsafeRawBufferPointer { buff in
       for i in 0..<boolsVector.count {
-        XCTAssertEqual(buff.load(fromByteOffset: i, as: Bool.self), bools[i])
+        #expect(buff.load(fromByteOffset: i, as: Bool.self) == bools[i])
       }
     }
-    XCTAssertEqual(map["foo"]?.double, 100)
+    #expect(map["foo"]?.double == 100)
-    XCTAssertNil(map["unknown"])
+    #expect(map["unknown"] == nil)
     let mymap = map["mymap"]?.map
 
     // Check if both addresses used are the same for keys and strings
-    XCTAssertEqual(mymap?.keys[0]?.cString, map.keys[4]?.cString)
+    #expect(mymap?.keys[0]?.cString == map.keys[4]?.cString)
     map.keys[4]?.withUnsafeRawPointer { pointer in
       mymap?.keys[0]?.withUnsafeRawPointer { mymapPointer in
-        XCTAssertEqual(pointer, mymapPointer)
+        #expect(pointer == mymapPointer)
       }
     }
 
-    XCTAssertEqual(mymap?.values[0]?.cString, vec[1]?.cString)
+    #expect(mymap?.values[0]?.cString == vec[1]?.cString)
     vec[1]?.withUnsafeRawPointer { pointer in
       mymap?.values[0]?.withUnsafeRawPointer { mymapPointer in
-        XCTAssertEqual(pointer, mymapPointer)
+        #expect(pointer == mymapPointer)
       }
     }
   }
@@ -127,7 +131,7 @@ final class FlexBuffersReaderTests: XCTestCase {
     #if os(macOS)
     // Gets the current path of this test file then
     // strips out the nested directories.
-    let filePath = URL(filePath: #file)
+    let filePath = URL(filePath: #filePath)
       .deletingLastPathComponent()
       .deletingLastPathComponent()
       .deletingLastPathComponent()

tests/swift/Wasm.tests/Tests/FlexBuffers.Test.Swift.WasmTests/FlexBuffersStringTests.swift

@@ -16,10 +16,12 @@
 
 import Common
 import FlexBuffers
-import XCTest
+import Foundation
+import Testing
 
-final class FlexBuffersStringTests: XCTestCase {
+struct FlexBuffersStringTests {
 
+  @Test
   func testEncodingUnicodeString() {
     let text = "プ画をみて✋"
 
@@ -38,6 +40,6 @@ final class FlexBuffersStringTests: XCTestCase {
       return String(data: data, encoding: .unicode)
     }
 
-    XCTAssertEqual(builtString, text)
+    #expect(builtString == text)
   }
 }

tests/swift/Wasm.tests/Tests/FlexBuffers.Test.Swift.WasmTests/FlexBuffersWriterTests.swift

@@ -16,9 +16,10 @@
 
 import Common
 import FlexBuffers
-import XCTest
+import Testing
 
-final class FlexBuffersWriterTests: XCTestCase {
+struct FlexBuffersWriterTests {
+  @Test
   func testDeallocation() {
     let buf: ByteBuffer = {
       var fbx = FlexBuffersWriter()
@@ -28,12 +29,13 @@ final class FlexBuffersWriterTests: XCTestCase {
     }()
 
     buf.withUnsafeBytes {
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
           [5, 72, 101, 108, 108, 111, 0, 6, 20, 1])
     }
   }
 
+  @Test
   func testAddingVectorOfScalars() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -45,8 +47,8 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           10, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 6, 0, 0, 0, 7, 0,
           0, 0, 8, 0, 0, 0, 9, 0, 0, 0, 20, 0, 0, 0, 1, 41, 46, 2, 40, 1,
@@ -55,6 +57,7 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testAddingVectorOfUnsignedScalars() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -66,8 +69,8 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           10, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0,
           0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0,
@@ -78,6 +81,7 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testAddingVectorOfBools() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -89,13 +93,14 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [4, 1, 0, 1, 0, 1, 5, 144, 2, 40, 1])
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testSortingWithinMap() {
     var fbx = FlexBuffersWriter()
     fbx.map {
@@ -106,8 +111,8 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           98, 111, 111, 108, 50, 0, 98, 111, 111, 108, 49, 0, 2, 7, 14, 2, 1, 2, 1, 0, 104, 104, 4,
           36, 1,
@@ -117,6 +122,7 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testSharingKeyWithinMap() {
     var fbx = FlexBuffersWriter(initialSize: 1000, flags: .shareKeysAndStrings)
     fbx.map {
@@ -128,8 +134,8 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [
           119, 101, 108, 99, 111, 109, 101, 0, 7, 119, 101, 108, 99, 111, 109, 101, 0, 3, 18, 19,
           20, 3, 1, 3, 15, 16, 17, 20, 20, 20, 6, 36, 1,
@@ -139,19 +145,21 @@ final class FlexBuffersWriterTests: XCTestCase {
     }
   }
 
+  @Test
   func testNestingVectorInMap() {
     let buf: ByteBuffer = createSizedBuffer()
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         flexbufferGolden
       )
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testAddingNil() {
     var fbx = FlexBuffersWriter(
       initialSize: 8,
@@ -165,14 +173,15 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         [118, 0, 1, 3, 1, 1, 1, 0, 0, 2, 36, 1]
       )
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testAddingManually() {
     var fbx = FlexBuffersWriter(
       initialSize: 8,
@@ -209,14 +218,15 @@ final class FlexBuffersWriterTests: XCTestCase {
     let buf: ByteBuffer = fbx.sizedByteBuffer
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         flexbufferGolden
       )
       // swiftformat:enable all
     }
   }
 
+  @Test
   func testEncodingAllTypes() {
     var fbx = FlexBuffersWriter()
     fbx.vector {
@@ -240,8 +250,8 @@ final class FlexBuffersWriterTests: XCTestCase {
 
     buf.withUnsafeBytes {
       // swiftformat:disable all
-      XCTAssertEqual(
+      #expect(
-        Array($0),
+        Array($0) ==
         allTypesGolden)
       // swiftformat:enable all
     }

tests/swift/fuzzer/CodeGenerationTests/test_import_generated.swift

@@ -3,12 +3,12 @@
 // swiftformat:disable all
 
 #if canImport(Common)
-@_implementationOnly import Common
+internal import Common
 #endif
 
-@_implementationOnly import FlatBuffers
+internal import FlatBuffers
 
-internal struct Message: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+internal struct Message: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   internal var __buffer: ByteBuffer! { return _accessor.bb }

tests/swift/fuzzer/CodeGenerationTests/test_no_include_generated.swift

@@ -68,7 +68,7 @@ public struct BytesCount_Mutable: FlatBufferStruct, FlatbuffersVectorInitializab
   }
 }
 
-public struct InternalMessage: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct InternalMessage: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -148,7 +148,7 @@ public class InternalMessageT: NativeObject {
   public func serialize() -> ByteBuffer { return serialize(type: InternalMessage.self) }
 
 }
-public struct Message: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable, ObjectAPIPacker {
+public struct Message: FlatBufferVerifiableTable, FlatbuffersVectorInitializable, ObjectAPIPacker {
 
   static func validateVersion() { FlatBuffersVersion_25_12_19() }
   public var __buffer: ByteBuffer! { return _accessor.bb }

tests/test.cpp

@@ -1774,6 +1774,7 @@ int FlatBufferTests(const std::string& tests_data_path) {
   FixedLengthArrayJsonTest(tests_data_path, false);
   FixedLengthArrayJsonTest(tests_data_path, true);
   ReflectionTest(tests_data_path, flatbuf.data(), flatbuf.size());
+  ForAllFieldsReverseTest(tests_data_path);
   ParseProtoTest(tests_data_path);
   EvolutionTest(tests_data_path);
   UnionDeprecationTest(tests_data_path);