Repository navigation
Skip removed observers during app exit requests - #190343
auto-submit[bot] merged 4 commits into
Conversation
There was a problem hiding this comment.
Code Review
This pull request modifies WidgetsBinding.handleRequestAppExit to check if an observer is still present in _observers before invoking its didRequestAppExit method, preventing notifications to observers disposed during the asynchronous execution. A corresponding test is added to verify this behavior. Feedback suggests addressing similar asynchronous iteration patterns in handlePushRoute and handlePopRoute, and using addTearDown in the new test to ensure proper cleanup of the test listener and prevent test pollution.
| if (!_observers.contains(observer)) { | ||
| continue; | ||
| } |
There was a problem hiding this comment.
While this fix correctly addresses the issue for handleRequestAppExit, please note that handlePushRoute and handlePopRoute in WidgetsBinding also iterate over _observers asynchronously (using await observer.didPushRoute(...) and await observer.didPopRoute()). They likely suffer from the same bug where a disposed/removed observer could be invoked if it is removed during an earlier asynchronous call. Consider addressing those as well, either in this PR or in a follow-up issue/PR.
There was a problem hiding this comment.
Thanks for pointing this out. handlePopRoute, handlePushRoute, and _handlePushRouteInformation have the same asynchronous iteration shape. Since this PR is scoped to the concrete app-exit failure reported in #189472, I would prefer to address the route handling paths in a follow-up issue/PR with dedicated regression coverage.
| disposedListener = TestAppLifecycleListener( | ||
| binding: WidgetsBinding.instance, | ||
| onExitRequested: () async { | ||
| disposedListenerCalled = true; | ||
| return AppExitResponse.exit; | ||
| }, | ||
| ); |
There was a problem hiding this comment.
If the test fails before disposedListener.dispose() is called (for example, if await firstRequestStarted.future times out or throws), disposedListener will remain registered on the global WidgetsBinding.instance singleton. This can pollute subsequent tests and cause flaky failures.
Consider registering a tear-down callback using addTearDown immediately after creating disposedListener to ensure it is always disposed.
| disposedListener = TestAppLifecycleListener( | |
| binding: WidgetsBinding.instance, | |
| onExitRequested: () async { | |
| disposedListenerCalled = true; | |
| return AppExitResponse.exit; | |
| }, | |
| ); | |
| disposedListener = TestAppLifecycleListener( | |
| binding: WidgetsBinding.instance, | |
| onExitRequested: () async { | |
| disposedListenerCalled = true; | |
| return AppExitResponse.exit; | |
| }, | |
| ); | |
| addTearDown(disposedListener.dispose); |
There was a problem hiding this comment.
Thanks. I updated the test so both listeners are cleaned up if the test exits early. The first listener now uses addTearDown, while the listener disposed during the test is managed by the existing shared tearDown, avoiding a double-dispose.
|
Re-running failed Google testing - will check in once it completes. |
|
autosubmit label was removed for flutter/flutter/190343, because The base commit of the PR is older than 7 days and can not be merged. Please merge the latest changes from the main into this branch and resubmit the PR. |
|
autosubmit label was removed for flutter/flutter/190343, because This PR has not met approval requirements for merging. The PR author is not a member of flutter-hackers and needs 1 more review(s) in order to merge this PR.
|
loic-sharma
left a comment
There was a problem hiding this comment.
Thanks for the contribution!
|
autosubmit label was removed for flutter/flutter/190343, because The base commit of the PR is older than 7 days and can not be merged. Please merge the latest changes from the main into this branch and resubmit the PR. |
|
autosubmit label was removed for flutter/flutter/190343, because - The status or check suite Google testing has failed. Please fix the issues identified (or deflake) before re-applying this label. |
|
auto label is removed for flutter/flutter/190343, Failed to enqueue flutter/flutter/190343 with HTTP 400: Pull request Required status check "Merge Queue Guard" is expected.. |
Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) flutter/flutter@9a82789...15d8908 2026-08-25 [email protected] Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734) 2026-08-25 [email protected] [record_use] Remove const_finder (flutter/flutter#191702) 2026-08-25 [email protected] Warn when SwiftPM is disabled (flutter/flutter#188695) 2026-08-25 [email protected] Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723) 2026-08-25 [email protected] Roll pub packages (flutter/flutter#191726) 2026-08-25 [email protected] Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717) 2026-08-25 [email protected] Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706) 2026-08-25 [email protected] Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701) 2026-08-25 [email protected] iOS: Add null check for touch rate correction task runner (flutter/flutter#191641) 2026-08-25 [email protected] iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635) 2026-08-25 [email protected] Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649) 2026-08-25 [email protected] Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643) 2026-08-25 [email protected] Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642) 2026-08-25 [email protected] Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633) 2026-08-25 [email protected] Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597) 2026-08-25 [email protected] Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621) 2026-08-25 [email protected] Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614) 2026-08-24 [email protected] [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217) 2026-08-24 [email protected] Skip removed observers during app exit requests (flutter/flutter#190343) 2026-08-24 [email protected] [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360) 2026-08-24 [email protected] Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333) 2026-08-24 [email protected] Migrate texture example to material_ui (flutter/flutter#190673) 2026-08-24 [email protected] Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936) 2026-08-24 [email protected] Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588) 2026-08-24 [email protected] [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356) 2026-08-24 [email protected] Add FlViewRendererSubsurface (flutter/flutter#191389) 2026-08-24 [email protected] [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328) 2026-08-24 [email protected] [AGP 9.1.0 Migration #3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218) 2026-08-24 [email protected] Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586) 2026-08-24 [email protected] On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434) 2026-08-24 [email protected] [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180) 2026-08-24 [email protected] [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494) 2026-08-24 [email protected] [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442) 2026-08-24 [email protected] [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952) 2026-08-24 [email protected] [native_assets] Roll native packages (flutter/flutter#191253) 2026-08-24 [email protected] [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579) 2026-08-24 [email protected] Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose ...
…r#12619) Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) flutter/flutter@9a82789...15d8908 2026-08-25 [email protected] Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734) 2026-08-25 [email protected] [record_use] Remove const_finder (flutter/flutter#191702) 2026-08-25 [email protected] Warn when SwiftPM is disabled (flutter/flutter#188695) 2026-08-25 [email protected] Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723) 2026-08-25 [email protected] Roll pub packages (flutter/flutter#191726) 2026-08-25 [email protected] Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717) 2026-08-25 [email protected] Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706) 2026-08-25 [email protected] Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701) 2026-08-25 [email protected] iOS: Add null check for touch rate correction task runner (flutter/flutter#191641) 2026-08-25 [email protected] iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635) 2026-08-25 [email protected] Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649) 2026-08-25 [email protected] Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643) 2026-08-25 [email protected] Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642) 2026-08-25 [email protected] Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633) 2026-08-25 [email protected] Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597) 2026-08-25 [email protected] Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621) 2026-08-25 [email protected] Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614) 2026-08-24 [email protected] [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217) 2026-08-24 [email protected] Skip removed observers during app exit requests (flutter/flutter#190343) 2026-08-24 [email protected] [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360) 2026-08-24 [email protected] Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333) 2026-08-24 [email protected] Migrate texture example to material_ui (flutter/flutter#190673) 2026-08-24 [email protected] Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936) 2026-08-24 [email protected] Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588) 2026-08-24 [email protected] [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356) 2026-08-24 [email protected] Add FlViewRendererSubsurface (flutter/flutter#191389) 2026-08-24 [email protected] [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328) 2026-08-24 [email protected] [AGP 9.1.0 Migration #3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218) 2026-08-24 [email protected] Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586) 2026-08-24 [email protected] On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434) 2026-08-24 [email protected] [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180) 2026-08-24 [email protected] [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494) 2026-08-24 [email protected] [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442) 2026-08-24 [email protected] [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952) 2026-08-24 [email protected] [native_assets] Roll native packages (flutter/flutter#191253) 2026-08-24 [email protected] [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579) 2026-08-24 [email protected] Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose ...
…r#12619) Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) flutter/flutter@9a82789...15d8908 2026-08-25 [email protected] Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734) 2026-08-25 [email protected] [record_use] Remove const_finder (flutter/flutter#191702) 2026-08-25 [email protected] Warn when SwiftPM is disabled (flutter/flutter#188695) 2026-08-25 [email protected] Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723) 2026-08-25 [email protected] Roll pub packages (flutter/flutter#191726) 2026-08-25 [email protected] Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717) 2026-08-25 [email protected] Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706) 2026-08-25 [email protected] Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701) 2026-08-25 [email protected] iOS: Add null check for touch rate correction task runner (flutter/flutter#191641) 2026-08-25 [email protected] iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635) 2026-08-25 [email protected] Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649) 2026-08-25 [email protected] Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643) 2026-08-25 [email protected] Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642) 2026-08-25 [email protected] Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633) 2026-08-25 [email protected] Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597) 2026-08-25 [email protected] Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621) 2026-08-25 [email protected] Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614) 2026-08-24 [email protected] [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217) 2026-08-24 [email protected] Skip removed observers during app exit requests (flutter/flutter#190343) 2026-08-24 [email protected] [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360) 2026-08-24 [email protected] Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333) 2026-08-24 [email protected] Migrate texture example to material_ui (flutter/flutter#190673) 2026-08-24 [email protected] Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936) 2026-08-24 [email protected] Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588) 2026-08-24 [email protected] [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356) 2026-08-24 [email protected] Add FlViewRendererSubsurface (flutter/flutter#191389) 2026-08-24 [email protected] [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328) 2026-08-24 [email protected] [AGP 9.1.0 Migration flutter#3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218) 2026-08-24 [email protected] Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586) 2026-08-24 [email protected] On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434) 2026-08-24 [email protected] [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180) 2026-08-24 [email protected] [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494) 2026-08-24 [email protected] [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442) 2026-08-24 [email protected] [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952) 2026-08-24 [email protected] [native_assets] Roll native packages (flutter/flutter#191253) 2026-08-24 [email protected] [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579) 2026-08-24 [email protected] Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose ...
…r#12619) Roll Flutter from 9a8278982588 to 15d8908addf6 (37 revisions) flutter/flutter@9a82789...15d8908 2026-08-25 [email protected] Roll Packages from df2ba94 to 740f093 (17 revisions) (flutter/flutter#191734) 2026-08-25 [email protected] [record_use] Remove const_finder (flutter/flutter#191702) 2026-08-25 [email protected] Warn when SwiftPM is disabled (flutter/flutter#188695) 2026-08-25 [email protected] Roll Skia from b1a31575c373 to 480540178356 (1 revision) (flutter/flutter#191723) 2026-08-25 [email protected] Roll pub packages (flutter/flutter#191726) 2026-08-25 [email protected] Roll Skia from bfa276ed9ac5 to b1a31575c373 (1 revision) (flutter/flutter#191717) 2026-08-25 [email protected] Roll Dart SDK from 0818e6dc28cc to 8996935d3d0a (2 revisions) (flutter/flutter#191706) 2026-08-25 [email protected] Roll Skia from 31799e707cd4 to bfa276ed9ac5 (1 revision) (flutter/flutter#191701) 2026-08-25 [email protected] iOS: Add null check for touch rate correction task runner (flutter/flutter#191641) 2026-08-25 [email protected] iOS: Add test for engineAllowHeadlessExecution (flutter/flutter#191635) 2026-08-25 [email protected] Roll Skia from cfae2af1bfeb to 31799e707cd4 (4 revisions) (flutter/flutter#191649) 2026-08-25 [email protected] Roll Dart SDK from 2b75c83ddd77 to 0818e6dc28cc (1 revision) (flutter/flutter#191643) 2026-08-25 [email protected] Roll Skia from 4a2fddefd3d8 to cfae2af1bfeb (1 revision) (flutter/flutter#191642) 2026-08-25 [email protected] Roll Skia from 256c15026b91 to 4a2fddefd3d8 (6 revisions) (flutter/flutter#191633) 2026-08-25 [email protected] Remove octant_offset_c uniform from ubersdf, reorder/document ubersdf uniforms (flutter/flutter#191597) 2026-08-25 [email protected] Roll Fuchsia Linux SDK from 8Xu4ujBJniC0nQGx3... to MstTWE1RDOT-RnrtH... (flutter/flutter#191621) 2026-08-25 [email protected] Roll Dart SDK from 78bbc37b6ff6 to 2b75c83ddd77 (3 revisions) (flutter/flutter#191614) 2026-08-24 [email protected] [flutter_tools] Fix $git typo in shared.bat to restore cache invalidation on Windows (flutter/flutter#191217) 2026-08-24 [email protected] Skip removed observers during app exit requests (flutter/flutter#190343) 2026-08-24 [email protected] [engine] Support UTF-8 paths in Windows filesystem and path APIs (flutter/flutter#191360) 2026-08-24 [email protected] Migrate ios driver tests batch 3 to simulators (flutter/flutter#191333) 2026-08-24 [email protected] Migrate texture example to material_ui (flutter/flutter#190673) 2026-08-24 [email protected] Remove outdated test todo about `dither` property of `Paint` (flutter/flutter#190936) 2026-08-24 [email protected] Add agent rule to prevent using material and cupertino in widget tests (flutter/flutter#191588) 2026-08-24 [email protected] [flutter_tools] Prevent crash when stdout is broken and print fails (flutter/flutter#191356) 2026-08-24 [email protected] Add FlViewRendererSubsurface (flutter/flutter#191389) 2026-08-24 [email protected] [Android] Inject `route` into manifest when specified on the command line in release mode (flutter/flutter#191328) 2026-08-24 [email protected] [AGP 9.1.0 Migration flutter#3] Add buildModeFor overloads and wire Flutter dependencies through the new DSL (flutter/flutter#191218) 2026-08-24 [email protected] Roll Skia from 698c60bf58f1 to 256c15026b91 (1 revision) (flutter/flutter#191586) 2026-08-24 [email protected] On iOS 27+ devices, manually process lldb stops (flutter/flutter#191434) 2026-08-24 [email protected] [flutter_tools] Handle missing Xcode gracefully in getInfo and buildMacOS (flutter/flutter#191180) 2026-08-24 [email protected] [flutter_tools] Handle null version gracefully in CachedArtifact and MaterialFonts (flutter/flutter#191494) 2026-08-24 [email protected] [flutter_tools] Do not treat 'daemon' argument as daemon command in logger initialization (flutter/flutter#191442) 2026-08-24 [email protected] [flutter_tools] Resolve workspace root when running widget preview from member package (flutter/flutter#190952) 2026-08-24 [email protected] [native_assets] Roll native packages (flutter/flutter#191253) 2026-08-24 [email protected] [flutter_tools] Add --force flag to flutter channel (flutter/flutter#191579) 2026-08-24 [email protected] Roll Skia from 57968d087d18 to 698c60bf58f1 (1 revision) (flutter/flutter#191577) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose ...
WidgetsBinding.handleRequestAppExititerates over a snapshot of registered observers so callbacks can add or remove observers without causing concurrent modification.When an earlier asynchronous observer callback causes a later
AppLifecycleListenerto be disposed, the disposed listener remains in that snapshot and is invoked. In debug mode this reports a use-after-dispose assertion; in release mode it runs the stale callback.This change checks that each observer is still registered immediately before invoking it. It preserves snapshot iteration for reentrancy safety while skipping observers removed during an earlier asynchronous callback.
The regression test pauses the first exit callback, disposes a second listener while the first callback is pending, resumes dispatch, and verifies that the disposed listener is not called.
Fixes #189472.
Tests
./bin/flutter analyze packages/flutter/lib/src/widgets/binding.dart./bin/flutter analyze packages/flutter/test/widgets/app_lifecycle_listener_test.dart./bin/flutter test --reporter compact packages/flutter/test/widgets/app_lifecycle_listener_test.dart packages/flutter/test/widgets/binding_test.dartPre-launch Checklist
///).