Cannot await stream after upgrading to rxdart 0.27.1 to 0.27.2 in Flutter tests

[voidsp]

Cannot await stream after upgrading to rxdart 0.27.1 to 0.27.2 in Flutter tests

[hoc081098]

I wrap await stream.first in tester.runAsync and it works.

  group('subject test', () {
    testWidgets('wait first', (tester) async {
      final subject = BehaviorSubject<String>();
      subject.add('my-value');

      final Stream<String> stream = subject.stream;

      await tester.runAsync(() async {
        expect(await stream.first, 'my-value');
      });

      await subject.close();
    });
  });

[voidsp]

Thank you @hoc081098, is this a regression in rxdart? I'm not sure why wrapping it in tester.runAsync is now required.

[CaleyD]

I'm still running into this - unfortunately wrapping our entire widget test in runAsync causes it to fail for other reasons so its not a reasonable workaround for us.

I've found that this for some reason fixes the tests await stream.doOnData((_) {}).first but seems like an ugly hack.