Flutter `showModalBottomSheet` Ticker 在测试期间未被处理
Flutter `showModalBottomSheet` Ticker was not disposed during tests
在编写 Flutter 小部件测试时，我 运行 遇到错误，其中在 showModalBottomSheet() 期间创建的 Ticker 未被处理。
我想我明白，如果我要实现自己的 Flutter 动画，我应该制作一个 AnimationController，并且我会在小部件 dispose 方法期间调用 AnimationController.dispose()。
但是，由于（我相信）AnimationController 被抽象出来以提供一些便利，所以我不确定在何处或如何确保在测试完成后处置小部件。
注意：代码有效，当我在 simulator/emulator 上测试时，模态底部 sheet 很棒。我只想能够在 testWidgets 测试中对其进行测试。
我查看了 showModalBottomSheet 文档 https://api.flutter.dev/flutter/material/showModalBottomSheet.html，但它只展示了如何使用该函数。我找不到任何方法来控制何时可以处理动画。
test_test.dart
（额外的 pump() 以防出现异步问题，但似乎无济于事）
testWidgets('Taping edit score button brings up bottom sheet to edit',
(WidgetTester tester) async {
setUp();
await tester.pumpWidget(MaterialApp(
home: GameList(
game: Game(players: players),
),
));
await tester.tap(find.byKey(Key('p1-edit-score')));
await tester.pump();
await tester.pump();
expect(find.byKey(Key('test')), findsOneWidget);
await tester.tap(find.byKey(Key('tap-me')));
await tester.pump();
await tester.pump();
tearDown();
});
game_view.dart
class GameView extends StatefulWidget {
GameView({@required this.playerList, @required this.onResetPlayerScores});
final Function onResetPlayerScores;
final List<Player> playerList;
@override
_GameState createState() => _GameState();
}
class _GameState extends State<GameView> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(...),
body: GameList(
game: Game(players: widget.playerList),
),
);
}
}
game_list.dart
为简洁起见删除了一些小部件
class GameList extends StatefulWidget {
GameList({@required this.game});
final Game game;
@override
GameListState createState() => GameListState(game: game);
}
class GameListState extends State<GameList> {
GameListState({@required this.game});
final Game game;
@override
Widget build(BuildContext context) {
return ListView.separated(
shrinkWrap: true,
itemCount: game.players.length,
itemBuilder: (BuildContext context, int index) {
return Card(
child: Column(
children: <Widget>[
ListTile(
trailing: Text(
'${game.players[index].score.toInt()}',
),
title: Text(
'${game.players[index].name}',
),
),
Row(
children: <Widget>[
FlatButton(
child: Icon(
Icons.edit,
color: Colors.grey[700],
),
onPressed: () async {
_settingModalBottomSheet(context);
},
key: Key(
'${game.players[index].name}-edit-score',
),
),
],
),
],
),
);
},
separatorBuilder: (BuildContext context, int index) => const Divider(),
);
}
}
void _settingModalBottomSheet(context) {
showModalBottomSheet(
context: context,
builder: (BuildContext buildContext) {
return Center(
child: Container(
child: Wrap(
children: <Widget>[
Text(
'edit',
key: Key('test'),
),
ListTile(
leading: Icon(Icons.edit),
title: Text('Video'),
onTap: () {
Navigator.pop(context, 'video');
},
key: Key('tap-me'),
),
],
),
),
);
},
);
}
flutter test 的短输出。我认为最重要的部分。
OverlayState created a Ticker via its TickerProviderStateMixin, but at the time dispose() was called
on the mixin, that Ticker was still active. All Tickers must be disposed before calling
super.dispose(). Tickers used by AnimationControllers should be disposed by calling dispose() on the
AnimationController itself. Otherwise, the ticker will leak.
flutter test
的完整输出
The following assertion was thrown while finalizing the widget tree:
OverlayState#bfe06(tickers: tracking 1 ticker, entries: [OverlayEntry#c26ee(opaque: false;
maintainState: false), OverlayEntry#7cd4f(opaque: false; maintainState: true),
OverlayEntry#d496e(opaque: false; maintainState: false), OverlayEntry#e9ad3(opaque: false;
maintainState: true)]) was disposed with an active Ticker.
OverlayState created a Ticker via its TickerProviderStateMixin, but at the time dispose() was called
on the mixin, that Ticker was still active. All Tickers must be disposed before calling
super.dispose(). Tickers used by AnimationControllers should be disposed by calling dispose() on the
AnimationController itself. Otherwise, the ticker will leak.
The offending ticker was: _WidgetTicker(created by OverlayState#bfe06(tickers: tracking 0 tickers,
entries: [OverlayEntry#c26ee(opaque: false; maintainState: false), OverlayEntry#7cd4f(opaque: false;
maintainState: true)]))
The stack trace when the _WidgetTicker was actually created was:
#0 new Ticker.<anonymous closure> (package:flutter/src/scheduler/ticker.dart:64:40)
#1 new Ticker (package:flutter/src/scheduler/ticker.dart:66:6)
#2 new _WidgetTicker (package:flutter/src/widgets/ticker_provider.dart:225:80)
#3 _OverlayState&State&TickerProviderStateMixin.createTicker
(package:flutter/src/widgets/ticker_provider.dart:161:34)
#4 new AnimationController (package:flutter/src/animation/animation_controller.dart:245:21)
#5 BottomSheet.createAnimationController
(package:flutter/src/material/bottom_sheet.dart:128:12)
#6 _ModalBottomSheetRoute.createAnimationController
(package:flutter/src/material/bottom_sheet.dart:356:40)
#7 TransitionRoute.install (package:flutter/src/widgets/routes.dart:176:19)
#8 ModalRoute.install (package:flutter/src/widgets/routes.dart:907:11)
#9 NavigatorState.push (package:flutter/src/widgets/navigator.dart:1754:11)
#10 Navigator.push (package:flutter/src/widgets/navigator.dart:1093:34)
#11 showModalBottomSheet (package:flutter/src/material/bottom_sheet.dart:427:20)
#12 _settingModalBottomSheet (package:score_keeper/game_list.dart:98:3)
#13 GameListState.build.<anonymous closure>.<anonymous closure>
(package:score_keeper/game_list.dart:65:23)
<asynchronous suspension>
#14 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:635:14)
#15 _InkResponseState.build.<anonymous closure>
(package:flutter/src/material/ink_well.dart:711:32)
#16 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
#17 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:365:11)
#18 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:312:7)
#19 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
#20
_TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.handleEvent
(package:flutter/src/gestures/binding.dart:222:20)
#21
_TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.dispatchEvent
(package:flutter/src/gestures/binding.dart:198:22)
#22 TestWidgetsFlutterBinding.dispatchEvent (package:flutter_test/src/binding.dart:365:11)
#23 WidgetTester.sendEventToBinding.<anonymous closure>
(package:flutter_test/src/widget_tester.dart:458:15)
#25 WidgetTester.sendEventToBinding.<anonymous closure>
(package:flutter_test/src/widget_tester.dart:457:39)
#28 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#29 WidgetTester.sendEventToBinding (package:flutter_test/src/widget_tester.dart:457:27)
#30 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:422:13)
#32 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:420:39)
#35 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#36 TestGesture.up (package:flutter_test/src/test_pointer.dart:420:27)
#37 WidgetController.tapAt.<anonymous closure> (package:flutter_test/src/controller.dart:263:21)
#51 WidgetController.startGesture (package:flutter_test/src/controller.dart)
#75 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure>
(package:flutter_test/src/binding.dart:1026:17)
#77 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure>
(package:flutter_test/src/binding.dart:1014:35)
(elided 58 frames from class _FakeAsync, package dart:async, package dart:async-patch, and package
stack_trace)
When the exception was thrown, this was the stack:
#0 _OverlayState&State&TickerProviderStateMixin.dispose.<anonymous closure> (package:flutter/src/widgets/ticker_provider.dart:178:13)
#1 _OverlayState&State&TickerProviderStateMixin.dispose (package:flutter/src/widgets/ticker_provider.dart:191:6)
#2 StatefulElement.unmount (package:flutter/src/widgets/framework.dart:4107:12)
#3 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1737:13)
#4 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#5 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#6 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#7 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#8 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#9 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#10 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#11 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#12 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#13 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#14 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#15 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#16 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#17 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#18 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#19 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#20 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#21 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#22 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#23 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#24 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#25 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#26 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#27 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#28 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#29 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#30 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#31 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#32 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#33 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#34 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#35 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#36 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#37 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#38 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#39 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#40 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#41 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#42 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#43 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#44 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#45 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#46 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#47 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#48 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#49 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#50 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#51 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#52 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#53 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#54 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#55 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#56 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#57 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#58 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#59 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#60 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#61 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#62 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#63 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#64 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#65 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#66 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#67 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#68 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#69 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#70 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#71 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#72 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#73 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#74 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#75 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#76 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#77 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#78 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#79 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#80 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#81 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#82 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#83 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#84 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#85 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#86 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#87 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#88 ListIterable.forEach (dart:_internal/iterable.dart:39:13)
#89 _InactiveElements._unmountAll (package:flutter/src/widgets/framework.dart:1746:25)
#90 BuildOwner.finalizeTree.<anonymous closure> (package:flutter/src/widgets/framework.dart:2426:27)
#91 BuildOwner.lockState (package:flutter/src/widgets/framework.dart:2258:15)
#92 BuildOwner.finalizeTree (package:flutter/src/widgets/framework.dart:2425:7)
#93 AutomatedTestWidgetsFlutterBinding.drawFrame (package:flutter_test/src/binding.dart:953:18)
#94 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:285:5)
#95 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1016:15)
#96 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:958:9)
#97 AutomatedTestWidgetsFlutterBinding.scheduleWarmUpFrame (package:flutter_test/src/binding.dart:915:5)
#98 runApp (package:flutter/src/widgets/binding.dart:787:7)
#99 TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:637:7)
<asynchronous suspension>
#102 TestWidgetsFlutterBinding._runTest (package:flutter_test/src/binding.dart:613:14)
#103 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure> (package:flutter_test/src/binding.dart:1010:24)
#109 AutomatedTestWidgetsFlutterBinding.runTest (package:flutter_test/src/binding.dart:1007:15)
#110 testWidgets.<anonymous closure> (package:flutter_test/src/widget_tester.dart:116:22)
#111 Declarer.test.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:test_api/src/backend/declarer.dart:168:27)
<asynchronous suspension>
#112 Invoker.waitForOutstandingCallbacks.<anonymous closure> (package:test_api/src/backend/invoker.dart:250:15)
<asynchronous suspension>
#117 Invoker.waitForOutstandingCallbacks (package:test_api/src/backend/invoker.dart:247:5)
#118 Declarer.test.<anonymous closure>.<anonymous closure> (package:test_api/src/backend/declarer.dart:166:33)
#123 Declarer.test.<anonymous closure> (package:test_api/src/backend/declarer.dart:165:13)
<asynchronous suspension>
#124 Invoker._onRun.<anonymous closure>.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:test_api/src/backend/invoker.dart:400:25)
<asynchronous suspension>
#138 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
#139 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
#140 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)
(elided 28 frames from class _FakeAsync, package dart:async, package dart:async-patch, and package stack_trace)
════════════════════════════════════════════════════════════════════════════════════════════════════
══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
The following message was thrown:
An animation is still running even after the widget tree was disposed.
There was one transient callback left. The stack trace for when it was registered is as follows:
── callback 72 ──
#0 new _FrameCallbackEntry.<anonymous closure> (package:flutter/src/scheduler/binding.dart:112:33)
#1 new _FrameCallbackEntry (package:flutter/src/scheduler/binding.dart:115:6)
#2 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding.scheduleFrameCallback (package:flutter/src/scheduler/binding.dart:459:49)
#3 Ticker.scheduleTick (package:flutter/src/scheduler/ticker.dart:243:46)
#4 Ticker.start (package:flutter/src/scheduler/ticker.dart:159:7)
#5 AnimationController._startSimulation (package:flutter/src/animation/animation_controller.dart:685:41)
#6 AnimationController._animateToInternal (package:flutter/src/animation/animation_controller.dart:590:12)
#7 AnimationController.forward (package:flutter/src/animation/animation_controller.dart:458:12)
#8 TransitionRoute.didPush (package:flutter/src/widgets/routes.dart:188:24)
#9 ModalRoute.didPush (package:flutter/src/widgets/routes.dart:917:18)
#10 NavigatorState.push (package:flutter/src/widgets/navigator.dart:1756:11)
#11 Navigator.push (package:flutter/src/widgets/navigator.dart:1093:34)
#12 showModalBottomSheet (package:flutter/src/material/bottom_sheet.dart:427:20)
#13 _settingModalBottomSheet (package:score_keeper/game_list.dart:98:3)
#14 GameListState.build.<anonymous closure>.<anonymous closure> (package:score_keeper/game_list.dart:65:23)
<asynchronous suspension>
#15 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:635:14)
#16 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:711:32)
#17 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
#18 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:365:11)
#19 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:312:7)
#20 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
#21 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:222:20)
#22 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
#23 TestWidgetsFlutterBinding.dispatchEvent (package:flutter_test/src/binding.dart:365:11)
#24 WidgetTester.sendEventToBinding.<anonymous closure> (package:flutter_test/src/widget_tester.dart:458:15)
#26 WidgetTester.sendEventToBinding.<anonymous closure> (package:flutter_test/src/widget_tester.dart:457:39)
#29 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#30 WidgetTester.sendEventToBinding (package:flutter_test/src/widget_tester.dart:457:27)
#31 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:422:13)
#33 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:420:39)
#36 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#37 TestGesture.up (package:flutter_test/src/test_pointer.dart:420:27)
#38 WidgetController.tapAt.<anonymous closure> (package:flutter_test/src/controller.dart:263:21)
#52 WidgetController.startGesture (package:flutter_test/src/controller.dart)
#76 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure> (package:flutter_test/src/binding.dart:1026:17)
#78 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure> (package:flutter_test/src/binding.dart:1014:35)
(elided 58 frames from class _FakeAsync, package dart:async, package dart:async-patch, and package stack_trace)
════════════════════════════════════════════════════════════════════════════════════════════════════
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following message was thrown:
Multiple exceptions (2) were detected during the running of the current test, and at least one was
unexpected.
════════════════════════════════════════════════════════════════════════════════════════════════════
00:04 +25 -1: /Users/tsustare/src/projects/flutter-score-keeper/score_keeper/test/game_view_test.dart: Taping edit score button brings up bottom sheet to edit [E]
Test failed. See exception logs above.
The test description was: Taping edit score button brings up bottom sheet to edit```
尝试点击任何不在底部的可见小部件 sheet 并在测试结束前触发一个帧。这将关闭底部 sheet 并在测试退出前处理它的 AnimationContoller。
例如在测试结束时：
await tester.tap(find.byType(BackButtonIcon)); // any widget that isn't in the bottom sheet
await tester.pump();
我在测试时有类似的行为。修改后解决
await tester.pump();
为了
await tester.pumpAndSettle();
调用 pump 两次对我有用：
expect(find.byKey(Key('BottomSheetKey')), findsNothing);
await tester.tap(find.byKey(Key('MyButton'))); //calls showModalBottomSheet(...) when tapped
await tester.pump(Duration(seconds: 1));
await tester.pump(Duration(seconds: 1));
expect(find.byKey(Key('BottomSheetKey')), findsOneWidget);
在编写 Flutter 小部件测试时，我 运行 遇到错误，其中在 showModalBottomSheet() 期间创建的 Ticker 未被处理。
我想我明白，如果我要实现自己的 Flutter 动画，我应该制作一个 AnimationController，并且我会在小部件 dispose 方法期间调用 AnimationController.dispose()。
但是，由于（我相信）AnimationController 被抽象出来以提供一些便利，所以我不确定在何处或如何确保在测试完成后处置小部件。
注意：代码有效，当我在 simulator/emulator 上测试时，模态底部 sheet 很棒。我只想能够在 testWidgets 测试中对其进行测试。
我查看了 showModalBottomSheet 文档 https://api.flutter.dev/flutter/material/showModalBottomSheet.html，但它只展示了如何使用该函数。我找不到任何方法来控制何时可以处理动画。
test_test.dart
（额外的 pump() 以防出现异步问题，但似乎无济于事）
testWidgets('Taping edit score button brings up bottom sheet to edit',
(WidgetTester tester) async {
setUp();
await tester.pumpWidget(MaterialApp(
home: GameList(
game: Game(players: players),
),
));
await tester.tap(find.byKey(Key('p1-edit-score')));
await tester.pump();
await tester.pump();
expect(find.byKey(Key('test')), findsOneWidget);
await tester.tap(find.byKey(Key('tap-me')));
await tester.pump();
await tester.pump();
tearDown();
});
game_view.dart
class GameView extends StatefulWidget {
GameView({@required this.playerList, @required this.onResetPlayerScores});
final Function onResetPlayerScores;
final List<Player> playerList;
@override
_GameState createState() => _GameState();
}
class _GameState extends State<GameView> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(...),
body: GameList(
game: Game(players: widget.playerList),
),
);
}
}
game_list.dart
为简洁起见删除了一些小部件
class GameList extends StatefulWidget {
GameList({@required this.game});
final Game game;
@override
GameListState createState() => GameListState(game: game);
}
class GameListState extends State<GameList> {
GameListState({@required this.game});
final Game game;
@override
Widget build(BuildContext context) {
return ListView.separated(
shrinkWrap: true,
itemCount: game.players.length,
itemBuilder: (BuildContext context, int index) {
return Card(
child: Column(
children: <Widget>[
ListTile(
trailing: Text(
'${game.players[index].score.toInt()}',
),
title: Text(
'${game.players[index].name}',
),
),
Row(
children: <Widget>[
FlatButton(
child: Icon(
Icons.edit,
color: Colors.grey[700],
),
onPressed: () async {
_settingModalBottomSheet(context);
},
key: Key(
'${game.players[index].name}-edit-score',
),
),
],
),
],
),
);
},
separatorBuilder: (BuildContext context, int index) => const Divider(),
);
}
}
void _settingModalBottomSheet(context) {
showModalBottomSheet(
context: context,
builder: (BuildContext buildContext) {
return Center(
child: Container(
child: Wrap(
children: <Widget>[
Text(
'edit',
key: Key('test'),
),
ListTile(
leading: Icon(Icons.edit),
title: Text('Video'),
onTap: () {
Navigator.pop(context, 'video');
},
key: Key('tap-me'),
),
],
),
),
);
},
);
}
flutter test 的短输出。我认为最重要的部分。
OverlayState created a Ticker via its TickerProviderStateMixin, but at the time dispose() was called
on the mixin, that Ticker was still active. All Tickers must be disposed before calling
super.dispose(). Tickers used by AnimationControllers should be disposed by calling dispose() on the
AnimationController itself. Otherwise, the ticker will leak.
flutter test
的完整输出
The following assertion was thrown while finalizing the widget tree:
OverlayState#bfe06(tickers: tracking 1 ticker, entries: [OverlayEntry#c26ee(opaque: false;
maintainState: false), OverlayEntry#7cd4f(opaque: false; maintainState: true),
OverlayEntry#d496e(opaque: false; maintainState: false), OverlayEntry#e9ad3(opaque: false;
maintainState: true)]) was disposed with an active Ticker.
OverlayState created a Ticker via its TickerProviderStateMixin, but at the time dispose() was called
on the mixin, that Ticker was still active. All Tickers must be disposed before calling
super.dispose(). Tickers used by AnimationControllers should be disposed by calling dispose() on the
AnimationController itself. Otherwise, the ticker will leak.
The offending ticker was: _WidgetTicker(created by OverlayState#bfe06(tickers: tracking 0 tickers,
entries: [OverlayEntry#c26ee(opaque: false; maintainState: false), OverlayEntry#7cd4f(opaque: false;
maintainState: true)]))
The stack trace when the _WidgetTicker was actually created was:
#0 new Ticker.<anonymous closure> (package:flutter/src/scheduler/ticker.dart:64:40)
#1 new Ticker (package:flutter/src/scheduler/ticker.dart:66:6)
#2 new _WidgetTicker (package:flutter/src/widgets/ticker_provider.dart:225:80)
#3 _OverlayState&State&TickerProviderStateMixin.createTicker
(package:flutter/src/widgets/ticker_provider.dart:161:34)
#4 new AnimationController (package:flutter/src/animation/animation_controller.dart:245:21)
#5 BottomSheet.createAnimationController
(package:flutter/src/material/bottom_sheet.dart:128:12)
#6 _ModalBottomSheetRoute.createAnimationController
(package:flutter/src/material/bottom_sheet.dart:356:40)
#7 TransitionRoute.install (package:flutter/src/widgets/routes.dart:176:19)
#8 ModalRoute.install (package:flutter/src/widgets/routes.dart:907:11)
#9 NavigatorState.push (package:flutter/src/widgets/navigator.dart:1754:11)
#10 Navigator.push (package:flutter/src/widgets/navigator.dart:1093:34)
#11 showModalBottomSheet (package:flutter/src/material/bottom_sheet.dart:427:20)
#12 _settingModalBottomSheet (package:score_keeper/game_list.dart:98:3)
#13 GameListState.build.<anonymous closure>.<anonymous closure>
(package:score_keeper/game_list.dart:65:23)
<asynchronous suspension>
#14 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:635:14)
#15 _InkResponseState.build.<anonymous closure>
(package:flutter/src/material/ink_well.dart:711:32)
#16 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
#17 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:365:11)
#18 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:312:7)
#19 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
#20
_TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.handleEvent
(package:flutter/src/gestures/binding.dart:222:20)
#21
_TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.dispatchEvent
(package:flutter/src/gestures/binding.dart:198:22)
#22 TestWidgetsFlutterBinding.dispatchEvent (package:flutter_test/src/binding.dart:365:11)
#23 WidgetTester.sendEventToBinding.<anonymous closure>
(package:flutter_test/src/widget_tester.dart:458:15)
#25 WidgetTester.sendEventToBinding.<anonymous closure>
(package:flutter_test/src/widget_tester.dart:457:39)
#28 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#29 WidgetTester.sendEventToBinding (package:flutter_test/src/widget_tester.dart:457:27)
#30 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:422:13)
#32 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:420:39)
#35 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#36 TestGesture.up (package:flutter_test/src/test_pointer.dart:420:27)
#37 WidgetController.tapAt.<anonymous closure> (package:flutter_test/src/controller.dart:263:21)
#51 WidgetController.startGesture (package:flutter_test/src/controller.dart)
#75 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure>
(package:flutter_test/src/binding.dart:1026:17)
#77 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure>
(package:flutter_test/src/binding.dart:1014:35)
(elided 58 frames from class _FakeAsync, package dart:async, package dart:async-patch, and package
stack_trace)
When the exception was thrown, this was the stack:
#0 _OverlayState&State&TickerProviderStateMixin.dispose.<anonymous closure> (package:flutter/src/widgets/ticker_provider.dart:178:13)
#1 _OverlayState&State&TickerProviderStateMixin.dispose (package:flutter/src/widgets/ticker_provider.dart:191:6)
#2 StatefulElement.unmount (package:flutter/src/widgets/framework.dart:4107:12)
#3 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1737:13)
#4 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#5 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#6 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#7 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#8 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#9 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#10 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#11 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#12 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#13 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#14 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#15 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#16 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#17 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#18 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#19 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#20 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#21 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#22 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#23 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#24 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#25 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#26 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#27 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#28 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#29 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#30 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#31 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#32 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#33 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#34 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#35 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#36 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#37 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#38 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#39 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#40 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#41 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#42 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#43 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#44 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#45 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#46 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#47 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#48 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#49 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#50 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#51 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#52 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#53 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#54 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#55 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#56 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#57 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#58 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#59 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#60 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#61 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#62 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#63 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#64 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#65 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#66 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#67 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#68 SingleChildRenderObjectElement.visitChildren (package:flutter/src/widgets/framework.dart:5080:14)
#69 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#70 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#71 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#72 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#73 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#74 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#75 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#76 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#77 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#78 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#79 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#80 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#81 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#82 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#83 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#84 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#85 _InactiveElements._unmount.<anonymous closure> (package:flutter/src/widgets/framework.dart:1735:7)
#86 ComponentElement.visitChildren (package:flutter/src/widgets/framework.dart:3955:14)
#87 _InactiveElements._unmount (package:flutter/src/widgets/framework.dart:1733:13)
#88 ListIterable.forEach (dart:_internal/iterable.dart:39:13)
#89 _InactiveElements._unmountAll (package:flutter/src/widgets/framework.dart:1746:25)
#90 BuildOwner.finalizeTree.<anonymous closure> (package:flutter/src/widgets/framework.dart:2426:27)
#91 BuildOwner.lockState (package:flutter/src/widgets/framework.dart:2258:15)
#92 BuildOwner.finalizeTree (package:flutter/src/widgets/framework.dart:2425:7)
#93 AutomatedTestWidgetsFlutterBinding.drawFrame (package:flutter_test/src/binding.dart:953:18)
#94 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:285:5)
#95 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1016:15)
#96 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:958:9)
#97 AutomatedTestWidgetsFlutterBinding.scheduleWarmUpFrame (package:flutter_test/src/binding.dart:915:5)
#98 runApp (package:flutter/src/widgets/binding.dart:787:7)
#99 TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:637:7)
<asynchronous suspension>
#102 TestWidgetsFlutterBinding._runTest (package:flutter_test/src/binding.dart:613:14)
#103 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure> (package:flutter_test/src/binding.dart:1010:24)
#109 AutomatedTestWidgetsFlutterBinding.runTest (package:flutter_test/src/binding.dart:1007:15)
#110 testWidgets.<anonymous closure> (package:flutter_test/src/widget_tester.dart:116:22)
#111 Declarer.test.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:test_api/src/backend/declarer.dart:168:27)
<asynchronous suspension>
#112 Invoker.waitForOutstandingCallbacks.<anonymous closure> (package:test_api/src/backend/invoker.dart:250:15)
<asynchronous suspension>
#117 Invoker.waitForOutstandingCallbacks (package:test_api/src/backend/invoker.dart:247:5)
#118 Declarer.test.<anonymous closure>.<anonymous closure> (package:test_api/src/backend/declarer.dart:166:33)
#123 Declarer.test.<anonymous closure> (package:test_api/src/backend/declarer.dart:165:13)
<asynchronous suspension>
#124 Invoker._onRun.<anonymous closure>.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:test_api/src/backend/invoker.dart:400:25)
<asynchronous suspension>
#138 _Timer._runTimers (dart:isolate-patch/timer_impl.dart:382:19)
#139 _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:416:5)
#140 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)
(elided 28 frames from class _FakeAsync, package dart:async, package dart:async-patch, and package stack_trace)
════════════════════════════════════════════════════════════════════════════════════════════════════
══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
The following message was thrown:
An animation is still running even after the widget tree was disposed.
There was one transient callback left. The stack trace for when it was registered is as follows:
── callback 72 ──
#0 new _FrameCallbackEntry.<anonymous closure> (package:flutter/src/scheduler/binding.dart:112:33)
#1 new _FrameCallbackEntry (package:flutter/src/scheduler/binding.dart:115:6)
#2 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding.scheduleFrameCallback (package:flutter/src/scheduler/binding.dart:459:49)
#3 Ticker.scheduleTick (package:flutter/src/scheduler/ticker.dart:243:46)
#4 Ticker.start (package:flutter/src/scheduler/ticker.dart:159:7)
#5 AnimationController._startSimulation (package:flutter/src/animation/animation_controller.dart:685:41)
#6 AnimationController._animateToInternal (package:flutter/src/animation/animation_controller.dart:590:12)
#7 AnimationController.forward (package:flutter/src/animation/animation_controller.dart:458:12)
#8 TransitionRoute.didPush (package:flutter/src/widgets/routes.dart:188:24)
#9 ModalRoute.didPush (package:flutter/src/widgets/routes.dart:917:18)
#10 NavigatorState.push (package:flutter/src/widgets/navigator.dart:1756:11)
#11 Navigator.push (package:flutter/src/widgets/navigator.dart:1093:34)
#12 showModalBottomSheet (package:flutter/src/material/bottom_sheet.dart:427:20)
#13 _settingModalBottomSheet (package:score_keeper/game_list.dart:98:3)
#14 GameListState.build.<anonymous closure>.<anonymous closure> (package:score_keeper/game_list.dart:65:23)
<asynchronous suspension>
#15 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:635:14)
#16 _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:711:32)
#17 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
#18 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:365:11)
#19 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:312:7)
#20 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
#21 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:222:20)
#22 _TestWidgetsFlutterBinding&BindingBase&ServicesBinding&SchedulerBinding&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
#23 TestWidgetsFlutterBinding.dispatchEvent (package:flutter_test/src/binding.dart:365:11)
#24 WidgetTester.sendEventToBinding.<anonymous closure> (package:flutter_test/src/widget_tester.dart:458:15)
#26 WidgetTester.sendEventToBinding.<anonymous closure> (package:flutter_test/src/widget_tester.dart:457:39)
#29 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#30 WidgetTester.sendEventToBinding (package:flutter_test/src/widget_tester.dart:457:27)
#31 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:422:13)
#33 TestGesture.up.<anonymous closure> (package:flutter_test/src/test_pointer.dart:420:39)
#36 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:69:41)
#37 TestGesture.up (package:flutter_test/src/test_pointer.dart:420:27)
#38 WidgetController.tapAt.<anonymous closure> (package:flutter_test/src/controller.dart:263:21)
#52 WidgetController.startGesture (package:flutter_test/src/controller.dart)
#76 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure> (package:flutter_test/src/binding.dart:1026:17)
#78 AutomatedTestWidgetsFlutterBinding.runTest.<anonymous closure> (package:flutter_test/src/binding.dart:1014:35)
(elided 58 frames from class _FakeAsync, package dart:async, package dart:async-patch, and package stack_trace)
════════════════════════════════════════════════════════════════════════════════════════════════════
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following message was thrown:
Multiple exceptions (2) were detected during the running of the current test, and at least one was
unexpected.
════════════════════════════════════════════════════════════════════════════════════════════════════
00:04 +25 -1: /Users/tsustare/src/projects/flutter-score-keeper/score_keeper/test/game_view_test.dart: Taping edit score button brings up bottom sheet to edit [E]
Test failed. See exception logs above.
The test description was: Taping edit score button brings up bottom sheet to edit```
尝试点击任何不在底部的可见小部件 sheet 并在测试结束前触发一个帧。这将关闭底部 sheet 并在测试退出前处理它的 AnimationContoller。
例如在测试结束时：
await tester.tap(find.byType(BackButtonIcon)); // any widget that isn't in the bottom sheet
await tester.pump();
我在测试时有类似的行为。修改后解决
await tester.pump();
为了
await tester.pumpAndSettle();
调用 pump 两次对我有用：
expect(find.byKey(Key('BottomSheetKey')), findsNothing);
await tester.tap(find.byKey(Key('MyButton'))); //calls showModalBottomSheet(...) when tapped
await tester.pump(Duration(seconds: 1));
await tester.pump(Duration(seconds: 1));
expect(find.byKey(Key('BottomSheetKey')), findsOneWidget);