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Dart - unpack() must use eager list reader (#6723)

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This commit is contained in:
Ivan Dlugos
2021-07-09 18:55:34 +02:00
committed by GitHub
parent 838c93b843
commit 3f77dc9a0e
6 changed files with 98 additions and 47 deletions
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22
dart/test/flat_buffers_test.dart
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@@ -763,6 +763,28 @@ class ObjectAPITest {
// final monster3 = monster2.unpack(); // MonsterT
// expect(monster3.toString(), monster.toString());
}
void test_Lists() {
// Ensure unpack() reads lists eagerly by reusing the same builder and
// overwriting data. Why: because standard reader reads lists lazily...
final fbb = Builder();
final object1 = example.TypeAliasesT(v8: [1, 2, 3], vf64: [5, 6]);
final data1 = fbb.finish(object1.pack(fbb));
final object1Read = example.TypeAliases(data1).unpack();
// overwrite the original buffer by writing to the same builder
fbb.reset();
final object2 = example.TypeAliasesT(v8: [7, 8, 9], vf64: [10, 11]);
final data2 = fbb.finish(object2.pack(fbb));
final object2Read = example.TypeAliases(data2).unpack();
// this is fine even with lazy lists:
expect(object2.toString(), object2Read.toString());
// this fails with lazy lists:
expect(object1.toString(), object1Read.toString());
}
}
class StringListWrapperImpl {