Asserts in widget test with hover #127575
Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Steps to reproduce
- Do
flutter create hover_test - Replace test/widget_test.dart with the code below
- Run
flutter test
Expected results
Test completes
Actual results
Test terminates with the following assert:
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following assertion was thrown running a test:
'package:flutter/src/material/tooltip.dart': Failed assertion: line 652 pos 12:
'_activeHoveringPointerDevices.isNotEmpty': is not true.
Either the assertion indicates an error in the framework itself, or we should provide substantially
more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=2_bug.yml
When the exception was thrown, this was the stack:
#2 TooltipState._handleMouseExit (package:flutter/src/material/tooltip.dart:652:12)
#3 MouseTracker._handleDeviceUpdateMouseEvents.<anonymous closure> (package:flutter/src/rendering/mouse_tracker.dart:397:29)
#4 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:625:13)
#5 MouseTracker._handleDeviceUpdateMouseEvents (package:flutter/src/rendering/mouse_tracker.dart:394:21)
#6 MouseTracker._handleDeviceUpdate (package:flutter/src/rendering/mouse_tracker.dart:271:5)
#7 MouseTracker.updateWithEvent.<anonymous closure>.<anonymous closure> (package:flutter/src/rendering/mouse_tracker.dart:331:9)
#8 MouseTracker._deviceUpdatePhase (package:flutter/src/rendering/mouse_tracker.dart:200:9)
#9 MouseTracker.updateWithEvent.<anonymous closure> (package:flutter/src/rendering/mouse_tracker.dart:308:7)
#10 MouseTracker._monitorMouseConnection (package:flutter/src/rendering/mouse_tracker.dart:183:9)
#11 MouseTracker.updateWithEvent (package:flutter/src/rendering/mouse_tracker.dart:307:5)
#12 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:323:20)
#13 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:400:7)
#14 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:363:5)
#15 TestWidgetsFlutterBinding.handlePointerEventForSource.<anonymous closure> (package:flutter_test/src/binding.dart:631:42)
#16 TestWidgetsFlutterBinding.withPointerEventSource (package:flutter_test/src/binding.dart:641:11)
#17 TestWidgetsFlutterBinding.handlePointerEventForSource (package:flutter_test/src/binding.dart:631:5)
#18 WidgetTester.sendEventToBinding.<anonymous closure> (package:flutter_test/src/widget_tester.dart:842:15)
#21 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:68:41)
#22 WidgetTester.sendEventToBinding (package:flutter_test/src/widget_tester.dart:841:27)
#23 TestGesture.removePointer.<anonymous closure> (package:flutter_test/src/test_pointer.dart:492:25)
#26 TestAsyncUtils.guard (package:flutter_test/src/test_async_utils.dart:68:41)
#27 TestGesture.removePointer (package:flutter_test/src/test_pointer.dart:491:27)
#28 main.<anonymous closure> (file:///Users/tgucio/wrk/flutter_test/hover_test/test/widget_test.dart:16:16)
<asynchronous suspension>
<asynchronous suspension>
(elided 7 frames from class _AssertionError, dart:async, and package:stack_trace)
Code sample
Code sample
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:hover_test/main.dart';
void main() {
testWidgets('Counter increments smoke test', (WidgetTester tester) async {
// Build our app and trigger a frame.
await tester.pumpWidget(const MyApp());
final TestGesture down = await tester.startGesture(
tester.getCenter(find.byIcon(Icons.add)), kind: PointerDeviceKind.mouse);
await tester.pumpAndSettle();
await down.up();
await down.removePointer();
});
}Screenshots or Video
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Logs
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Flutter Doctor output
Doctor output
% flutter doctor -v
[✓] Flutter (Channel master, 3.11.0-13.0.pre.24, on macOS 13.3.1 22E772610a darwin-arm64, locale en-ES)
• Flutter version 3.11.0-13.0.pre.24 on channel master at /Users/tgucio/Library/Frameworks/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 1b800fd496 (5 hours ago), 2023-05-25 00:24:45 -0700
• Engine revision 2be736c390
• Dart version 3.1.0 (build 3.1.0-143.0.dev)
• DevTools version 2.23.1
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
• Android SDK at /Users/tgucio/Library/Android/sdk
• Platform android-33, build-tools 33.0.2
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 14.3)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14E222b
• CocoaPods version 1.12.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2022.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
[✓] VS Code (version 1.78.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.64.0
[✓] Connected device (3 available)
• Pixel 7 (mobile) • 2A281FDH200GMD • android-arm64 • Android 13 (API 33)
• macOS (desktop) • macos • darwin-arm64 • macOS 13.3.1 22E772610a darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 113.0.5672.126
[✓] Network resources
• All expected network resources are available.
• No issues found!Metadata
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Error messages from the Flutter frameworkIssues related to using a mouse or mouse supportIt was better in the past than it is nowflutter/packages/flutter/material repository.Found to occur in 3.11flutter/packages/flutter repository. See also f: labels.The issue has been confirmed reproducible and is ready to work onIssue is closed as already fixed in a newer version