fixed invalid TS call and added test files (#6495)

e581013e3d broke TS generation - please don't use "replace" to refactor function names :)

tests/my-game/in-parent-namespace.ts

@@ -0,0 +1,62 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+
+
+export class InParentNamespace {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):InParentNamespace {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsInParentNamespace(bb:flatbuffers.ByteBuffer, obj?:InParentNamespace):InParentNamespace {
+  return (obj || new InParentNamespace()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsInParentNamespace(bb:flatbuffers.ByteBuffer, obj?:InParentNamespace):InParentNamespace {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new InParentNamespace()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startInParentNamespace(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endInParentNamespace(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createInParentNamespace(builder:flatbuffers.Builder):flatbuffers.Offset {
+  InParentNamespace.startInParentNamespace(builder);
+  return InParentNamespace.endInParentNamespace(builder);
+}
+
+serialize():Uint8Array {
+  return this.bb!.bytes();
+}
+
+static deserialize(buffer: Uint8Array):InParentNamespace {
+  return InParentNamespace.getRootAsInParentNamespace(new flatbuffers.ByteBuffer(buffer))
+}
+
+unpack(): InParentNamespaceT {
+  return new InParentNamespaceT();
+}
+
+
+unpackTo(_o: InParentNamespaceT): void {}
+}
+
+export class InParentNamespaceT {
+constructor(){}
+
+
+pack(builder:flatbuffers.Builder): flatbuffers.Offset {
+  return InParentNamespace.createInParentNamespace(builder);
+}
+}