Flutter Tests: Waiting for a certain duration : <p>I'm trying to wait for some time after I tested tapping my button to then check the result with <code>expect</code>. I'm using <code>Future.delayed</code> for that. But that doesn't work for me. I'm getting a time out error.</p>

<pre><code>  TimeoutException after 0:00:05.000000: Test timed out after 5 seconds.
</code></pre>

<p>This is the code I use:</p>

<pre><code>... // other tests
await tester.tap(find.widgetWithText(GestureDetector, "ref size"));
await new Future.delayed(new Duration(milliseconds: 50));
expect(testContainerState.childWidth, 50.0);
</code></pre>

<p>Does any one have an idea why this (imo) strange behavior occurs?</p>
