Bloc: [Test] Question: is blocTest always emit first state even first state equals initial state?

[Peng-Qian]

Question

Is blocTest will always emit the state even the first state equals the initial state?

I notice there is a breaking change, is this a side-effect of it?

    blocTest<SomeBloc, SomeState>(
      'when the first state is equal to initial state',
      build: () => SomeBloc(),
      act: (bloc) async {
        // the event just do: yield state
        bloc.add(const SomeEvent.doSomething());
      },
      // in the previous version, should be expect:[] with skip: 1,
      expect: [
        SomeState.initial(),
      ],
      skip: 0,
    );

[felangel]

Hi @Peng-Qian 👋
Thanks for opening an issue!

That was an intentional change made to allow blocs to "reignite" (re-notify) listeners if needed when they are created. This is working as expected and if you'd like you can just skip it 👍

Hope that helps!

[Peng-Qian]

Thx for your quick reply!

[mzdm]

Oh, that's why! I spent too much time finding out why when testing Bottom Navigation Bar when the initial index is 0. When I changed to the same index, [0] was emitted (I thought it should be empty). But when doing it after switching to 1st index and then two times 0 index - then actual was [1, 0] - so 0 index was emitted only once. Glad I found this 😃