Flutter Bloc Test on type mismatch - flutter

Question

New to testing blocs in flutter. I can't get this simple test to work:
Here is the bloc class:
#injectable
class MyBloc extends Bloc<MyEvent, MyState> {
final MyUseCase _myUseCase;
MyBloc(this._myUseCase): super(const MyState()) {
on<LoadingEvent>(_onLoadingEvent);
}
FutureOr<void> _onLoadingEvent(
LoadingEvent event, Emitter<MyState> emit) async {
String email = await _myUseCase.fetchEmailAddress();
emit(state.copyWith(email: email, status: MyStatus.initial));
}
}
And the state class:
class MyState extends Equatable {
const MyState(
{this.email = "",
this.status = MyStatus.initial,
});
final String email;
final MyStatus status;
MyState copyWith(
{String? email,
MyStatus? status
}) {
return MyState(
email: email ?? this.email,
status: status ?? this.status,
);
}
}
And this is the test that is failing:
#GenerateMocks([MyUseCase])
void main() {
late MockMyUseCase mockMyUseCase;
late MyBloc bloc;
setUp(() {
mockMyCase = MockMyUseCase();
bloc = MyBloc(mockMyUseCase);
});
test('initial state', () async {
when(mockMyUseCase.fetchEmailAddress()).thenAnswer((_) async => "email");
bloc.add(const LoadingEvent());
await expectLater(
bloc.state,
emitsInOrder([
const MyState(email: "email", status: MyStatus.initial)
]));
});
}
What I am really trying to test for is the status that comes back. But here is the error:
Expected: should emit an event that MyState:<MyState(email, MyStatus.initial)>
Actual: MyState:<MyState(, MyStatus.initial)>
Which: was not a Stream or a StreamQueue
I'm really close, but I can't figure out what this error message is telling me.