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Add Cupterino button animation test (#87535)

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This commit is contained in:
Jenn Magder
2021-08-03 10:40:05 -07:00
committed by GitHub
parent f61074c230
commit d1eff7f4e3
1 changed files with 32 additions and 0 deletions
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32
packages/flutter/test/cupertino/button_test.dart
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@@ -194,6 +194,38 @@ void main() {
expect(SchedulerBinding.instance!.transientCallbackCount, equals(0));
});
testWidgets('Enabled button animates', (WidgetTester tester) async {
await tester.pumpWidget(boilerplate(child: CupertinoButton(
child: const Text('Tap me'),
onPressed: () { },
)));
await tester.tap(find.byType(CupertinoButton));
// Enter animation.
await tester.pump();
FadeTransition transition = tester.firstWidget(find.byType(FadeTransition));
await tester.pump(const Duration(milliseconds: 25));
transition = tester.firstWidget(find.byType(FadeTransition));
expect(transition.opacity.value, moreOrLessEquals(0.4, epsilon: 0.001));
await tester.pump(const Duration(milliseconds: 25));
transition = tester.firstWidget(find.byType(FadeTransition));
expect(transition.opacity.value, moreOrLessEquals(0.437, epsilon: 0.001));
await tester.pump(const Duration(milliseconds: 25));
transition = tester.firstWidget(find.byType(FadeTransition));
expect(transition.opacity.value, moreOrLessEquals(0.55, epsilon: 0.001));
await tester.pump(const Duration(milliseconds: 25));
transition = tester.firstWidget(find.byType(FadeTransition));
expect(transition.opacity.value, moreOrLessEquals(0.737, epsilon: 0.001));
await tester.pump(const Duration(milliseconds: 25));
transition = tester.firstWidget(find.byType(FadeTransition));
expect(transition.opacity.value, moreOrLessEquals(1.0, epsilon: 0.001));
});
testWidgets('pressedOpacity defaults to 0.1', (WidgetTester tester) async {
await tester.pumpWidget(boilerplate(child: CupertinoButton(
child: const Text('Tap me'),