Fails in tests

[joshpetit]

Hey! So I'm using marquee in my project, and have realized that it's causing some of my tests to fail. I didn't realize it was the reason until I added it to a widget in tests that already passed causing them to fail. This is the error output so I was wondering if you could give some guidance on how to work around this:

Timer (duration: 0:00:01.000000, periodic: false), created:
#0      new FakeTimer._ (package:fake_async/fake_async.dart:284:41)
#1      FakeAsync._createTimer (package:fake_async/fake_async.dart:248:27)
#2      FakeAsync.run.<anonymous closure> (package:fake_async/fake_async.dart:181:19)
#6      Marquee.scroll (package:marquee_widget/marquee_widget.dart:54:22)
<asynchronous suspension>
(elided 3 frames from dart:async)

Pending timers:
Timer (duration: 0:00:01.000000, periodic: false), created:
#0      new FakeTimer._ (package:fake_async/fake_async.dart:284:41)
#1      FakeAsync._createTimer (package:fake_async/fake_async.dart:248:27)
#2      FakeAsync.run.<anonymous closure> (package:fake_async/fake_async.dart:181:19)
#6      Marquee.scroll (package:marquee_widget/marquee_widget.dart:54:22)
#7      Marquee.build (package:marquee_widget/marquee_widget.dart:62:5)
#8      StatelessElement.build (package:flutter/src/widgets/framework.dart:4662:28)
#9      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4588:15)
#10     Element.rebuild (package:flutter/src/widgets/framework.dart:4311:5)
#11     StatelessElement.update (package:flutter/src/widgets/framework.dart:4669:5)
#12     Element.updateChild (package:flutter/src/widgets/framework.dart:3370:15)
#13     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:5626:32

The following assertion was thrown running a test:
A Timer is still pending even after the widget tree was disposed.
'package:flutter_test/src/binding.dart':
Failed assertion: line 1236 pos 12: '!timersPending'

When the exception was thrown, this was the stack:
#2      AutomatedTestWidgetsFlutterBinding._verifyInvariants (package:flutter_test/src/binding.dart:1236:12)
#3      TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:821:7)
<asynchronous suspension>
(elided 2 frames from class _AssertionError)

I just took those snippets since the actual error message is pretty long 😅.

Some help getting around this would be awesome since I would still love to use this library! Thanks.

[Gorniv]

try https://pub.dev/packages/fake_async :

 final fakeAsync = FakeAsync();
    unawaited(
      fakeAsync.run(
        (async) async {
          await func();
        },
      ),
    );
    fakeAsync.flushMicrotasks();