This PR is to update material_color_utilities package version to the latest. `material_color_utilities/scheme/scheme_fruit_salad.dart` and `material_color_utilities/scheme/scheme_rainbow.dart` are exported after version 0.9.0.
Once this PR is merged, we don't need to explicitly import these two files like the change in PR #144805, which breaks some dependencies in `Google testing`.
* Adds support for `flutter test --wasm`.
* The test compilation flow is a bit different now, so that it supports compilers other than DDC. Specifically, when we run a set of unit tests, we generate a "switchboard" main function that imports each unit test and runs the main function for a specific one based off of a value set by the JS bootstrapping code. This way, there is one compile step and the same compile output is invoked for each unit test file.
* Also, removes all references to `dart:html` from flutter/flutter.
* Adds CI steps for running the framework unit tests with dart2wasm+skwasm
* These steps are marked as `bringup: true`, so we don't know what kind of failures they will result in. Any failures they have will not block the tree at all yet while we're still in `bringup: true`. Once this PR is merged, I plan on looking at any failures and either fixing them or disabling them so we can get these CI steps running on presubmit.
This fixes https://github.com/flutter/flutter/issues/126692
This pull request is part of the effort to solve issue #144903.
In the past, my efforts to reduce line length involved refactoring away from switch statements, but unlike [yesterday's PR](https://github.com/flutter/flutter/pull/144905), this one is full of switch statements that make things more concise!
Reverts: flutter/flutter#144706
Initiated by: gspencergoog
Reason for reverting: This has broken the tree because some tests are still failing post completion. This particular one looks like it might have to do with a gold image not existing.
Original PR Author: goderbauer
Reviewed By: {Piinks}
This change reverts the following previous change:
A test was failing silently because of this (see https://github.com/flutter/flutter/issues/144353 and fixed in https://github.com/flutter/flutter/pull/144709). The failure went undetected for months. Ideally, this should have been a regular non-silent failure. This change makes that so. `package:test` can properly handle reported exceptions outside of test cases. With this change, the test fails as follows:
```
00:03 +82: Smoke test material/color_scheme/dynamic_content_color.0.dart
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following assertion was thrown running a test (but after the test had completed):
setState() called after dispose(): _DynamicColorExampleState#1cd37(lifecycle state: defunct, not
mounted)
This error happens if you call setState() on a State object for a widget that no longer appears in
the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error
can occur when code calls setState() from a timer or an animation callback.
The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling
setState() to ensure the object is still in the tree.
This error might indicate a memory leak if setState() is being called because another object is
retaining a reference to this State object after it has been removed from the tree. To avoid memory
leaks, consider breaking the reference to this object during dispose().
When the exception was thrown, this was the stack:
#0 State.setState.<anonymous closure> (package:flutter/src/widgets/framework.dart:1167:9)
#1 State.setState (package:flutter/src/widgets/framework.dart:1202:6)
#2 _DynamicColorExampleState._updateImage (package:flutter_api_samples/material/color_scheme/dynamic_content_color.0.dart:191:5)
<asynchronous suspension>
════════════════════════════════════════════════════════════════════════════════════════════════════
00:03 +81 -1: Smoke test material/context_menu/context_menu_controller.0.dart
00:03 +81 -1: Smoke test material/color_scheme/dynamic_content_color.0.dart [E]
Test failed. See exception logs above.
The test description was: Smoke test material/color_scheme/dynamic_content_color.0.dart
This test failed after it had already completed.
Make sure to use a matching library which informs the test runner
of pending async work.
```
A test was failing silently because of this (see
https://github.com/flutter/flutter/issues/144353 and fixed in
https://github.com/flutter/flutter/pull/144709). The failure went
undetected for months. Ideally, this should have been a regular
non-silent failure. This change makes that so. `package:test` can
properly handle reported exceptions outside of test cases. With this
change, the test fails as follows:
```
00:03 +82: Smoke test material/color_scheme/dynamic_content_color.0.dart
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following assertion was thrown running a test (but after the test had completed):
setState() called after dispose(): _DynamicColorExampleState#1cd37(lifecycle state: defunct, not
mounted)
This error happens if you call setState() on a State object for a widget that no longer appears in
the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error
can occur when code calls setState() from a timer or an animation callback.
The preferred solution is to cancel the timer or stop listening to the animation in the dispose()
callback. Another solution is to check the "mounted" property of this object before calling
setState() to ensure the object is still in the tree.
This error might indicate a memory leak if setState() is being called because another object is
retaining a reference to this State object after it has been removed from the tree. To avoid memory
leaks, consider breaking the reference to this object during dispose().
When the exception was thrown, this was the stack:
#0 State.setState.<anonymous closure> (package:flutter/src/widgets/framework.dart:1167:9)
#1 State.setState (package:flutter/src/widgets/framework.dart:1202:6)
#2 _DynamicColorExampleState._updateImage (package:flutter_api_samples/material/color_scheme/dynamic_content_color.0.dart:191:5)
<asynchronous suspension>
════════════════════════════════════════════════════════════════════════════════════════════════════
00:03 +81 -1: Smoke test material/context_menu/context_menu_controller.0.dart
00:03 +81 -1: Smoke test material/color_scheme/dynamic_content_color.0.dart [E]
Test failed. See exception logs above.
The test description was: Smoke test material/color_scheme/dynamic_content_color.0.dart
This test failed after it had already completed.
Make sure to use a matching library which informs the test runner
of pending async work.
```
## Description
This PRs changes the default value for the `platform` parameter used to simulate key events.
With this PR, the default value is "web" on web, otherwise it is the operating system name retrieved from `defaultTargetPlatform`.
Previously, for methods in `WidgetController`, it defaulted to âwebâ on web, and âandroidâ everywhere else. And for methods in `KeyEventSimulator` it defaulted to âwebâ on web, and the operating system that the test was running on everywhere else. Because the operating system was based on `Platform.operatingSystem`, it usually differed from the target platform the test was running on.
AFAIK, the `platform` parameter is only meaningful for simulating `RawKeyEvent`. Once `RawKeyboard` will be fully removed, the `platform` parameter wonât be needed.
@gspencergoog In the meantime, do you think it is worth merging this fix?
## Related Issue
Fixes to https://github.com/flutter/flutter/issues/133955
## Tests
Adds one test.
## Description
This PRs changes the default value transit mode for key event simulation.
The default transit mode for key event simulation is currently `KeyDataTransitMode.rawKeyData` while on the framework side `KeyDataTransitMode.keyDataThenRawKeyData` is the preferred transit mode.
`KeyDataTransitMode.keyDataThenRawKeyData` is more accurate and can help detect issues.
For instance the following test will fail with `KeyDataTransitMode.rawKeyData` because raw keyboard logic for modifier keys is less accurate:
```dart
testWidgets('Press control left once', (WidgetTester tester) async {
debugKeyEventSimulatorTransitModeOverride = KeyDataTransitMode.keyDataThenRawKeyData;
final List<KeyEvent> events = <KeyEvent>[];
final FocusNode focusNode = FocusNode();
addTearDown(focusNode.dispose);
await tester.pumpWidget(
Focus(
focusNode: focusNode,
autofocus: true,
onKeyEvent: (_, KeyEvent event) {
events.add(event);
return KeyEventResult.handled;
},
child: Container(),
),
);
await simulateKeyDownEvent(LogicalKeyboardKey.controlLeft);
// This will fail when transit mode is KeyDataTransitMode.rawKeyData
// because a down event for controlRight is synthesized.
expect(events.length, 1);
debugKeyEventSimulatorTransitModeOverride = null;
});
```
And the following this test is ok with `KeyDataTransitMode.rawKeyData` but rightly fails with `KeyDataTransitMode.keyDataThenRawKeyData`:
```dart
testWidgets('Simulates consecutive key down events', (WidgetTester tester) async {
debugKeyEventSimulatorTransitModeOverride = KeyDataTransitMode.rawKeyData;
// Simulating several key down events without key up in between is tolerated
// when transit mode is KeyDataTransitMode.rawKeyData, it will trigger an
// assert on KeyDataTransitMode.keyDataThenRawKeyData.
await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown);
await simulateKeyDownEvent(LogicalKeyboardKey.arrowDown);
debugKeyEventSimulatorTransitModeOverride = null;
});
```
## Related Issue
Related to https://github.com/flutter/flutter/issues/143845
## Tests
Adds two tests.
Originally, my aim was just to refactor (as per usual), but while messing around with the `TableBorder.symmetric` constructor, I realized that `borderRadius` was missing!
This pull request makes a few class constructors more efficient, and it fixes#144277 by adding the missing parameter.
<br>
Reverts flutter/flutter#144001
Initiated by: Piinks
Reason for reverting: Failing goldens at the tip of tree
Original PR Author: QuncCccccc
Reviewed By: {HansMuller}
This change reverts the following previous change:
Original Description:
Reverts flutter/flutter#143973
This is a reland for #138521 with an updated g3fix(cl/605555997). Local test: cl/609608958.
This pull request fixes#143803 by taking advantage of Dart's null-aware operators.
And unlike `switch` expressions ([9 PRs](https://github.com/flutter/flutter/pull/143634) and counting), the Flutter codebase is already fantastic when it comes to null-aware coding. After refactoring the entire repo, all the changes involving `?.` and `??` can fit into a single pull request.
This PR implements the functionality described above and hides it behind
the `--experimental-faster-testing` flag of `flutter test`.
### The following are some performance measurements from test runs
conducted on GitHub Actions
run 1 logs:
https://github.com/derekxu16/flutter_test_ci/actions/runs/8008029772/attempts/1
run 2 logs:
https://github.com/derekxu16/flutter_test_ci/actions/runs/8008029772/attempts/2
run 3 logs:
https://github.com/derekxu16/flutter_test_ci/actions/runs/8008029772/attempts/3
**length of `flutter test --reporter=expanded test/animation
test/foundation` step**
run 1: 54s
run 2: 52s
run 3: 56s
average: 54s
**length of `flutter test --experimental-faster-testing
--reporter=expanded test/animation test/foundation` step**
run 1: 27s
run 2: 27s
run 3: 29s
average: 27.67s (~48.77% shorter than 54s)
**length of `flutter test --reporter=expanded test/animation
test/foundation test/gestures test/painting test/physics test/rendering
test/scheduler test/semantics test/services` step**
run 1: 260s
run 2: 270s
run 3: 305s
average: 278.33s
**length of `flutter test --experimental-faster-testing
--reporter=expanded test/animation test/foundation test/gestures
test/painting test/physics test/rendering test/scheduler test/semantics
test/services` step**
from a clean build (right after deleting the build folder):
run 1: 215s
run 2: 227s
run 3: 245s
average: 229s (~17.72% shorter than 278.33s)
Note that in reality, `test/material` was not passed to `flutter test`
in the trials below. All of the test files under `test/material` except
for `test/material/icons_test.dart` were listed out individually
**length of `flutter test --reporter=expanded test/material` step**
run 1: 408s
run 2: 421s
run 3: 451s
average: 426.67s
**length of `flutter test --experimental-faster-testing
--reporter=expanded test/material` step**
run 1: 382s
run 2: 373s
run 3: 400s
average: 385s (~9.77% shorter than 426.67s)
---------
Co-authored-by: Dan Field <dnfield@google.com>
Fixes https://github.com/flutter/flutter/issues/143405.
It was counter-intuitive that a SemanticsFinder without specifying a FlutterView would only search the nodes in the default view. This change makes it so that when no view is specified the semantics trees of all known FlutterViews are searched.
Reverts flutter/flutter#143386
Initiated by: Piinks
Reason for reverting: This broke a customer test.
Original PR Author: Piinks
Reviewed By: {goderbauer}
This change reverts the following previous change:
Original Description:
Fixes https://github.com/flutter/flutter/issues/143173
The `start` and `end` parameters of `SemanticsController.simulatedAccessibilityTraversal` were deprecated in https://github.com/flutter/flutter/issues/112413, but no tests were added that verified the new API. 😳
This change
- fixes a typo in an error message
- fixes the new `startNode` and `endNode` not being accounted for in setting the traversal range
- adds dart fixes for the deprecations
- adds tests for the new API that is meant to replace the deprecated one.
- Filed https://github.com/flutter/flutter/issues/143405 to follow up on the new API not working in multiple views.
Reverts flutter/flutter#143334
Initiated by: hangyujin
Reason for reverting: broke g3 tests
Original PR Author: hangyujin
Reviewed By: {LongCatIsLooong}
This change reverts the following previous change:
Original Description:
Add a semantics flag to text field to fix https://github.com/flutter/flutter/issues/143337 (in IOS the disabled text field is not read `dimmed`)
internal: b/322345393
Fixes https://github.com/flutter/flutter/issues/143173
The `start` and `end` parameters of `SemanticsController.simulatedAccessibilityTraversal` were deprecated in https://github.com/flutter/flutter/issues/112413, but no tests were added that verified the new API. ð³
This change
- fixes a typo in an error message
- fixes the new `startNode` and `endNode` not being accounted for in setting the traversal range
- adds dart fixes for the deprecations
- adds tests for the new API that is meant to replace the deprecated one.
- Filed https://github.com/flutter/flutter/issues/143405 to follow up on the new API not working in multiple views.
During golden test image comparison 2 lists of a different type are compared with the method "identical", so this will never be true. The test image is a _Uint8ArrayView while the master image is an Uint8List. So that results in always a heavy computation to get the difference between the test and the master image.
When you run this test snippet I go from 51 seconds to 14 seconds:
```dart
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
for (int i = 0; i < 100; i++) {
testWidgets('Small test', (WidgetTester tester) async {
await tester.pumpWidget(Directionality(textDirection: TextDirection.ltr, child: Text('jo')));
await expectLater(find.byType(Text), matchesGoldenFile('main.png'));
});
}
}
```
Update the `matchesGoldenFile()` / `LocalComparisonOutput` code to generate failure images for golden tests that fail when the image sizes do not match. This can make it far quicker to identify what is wrong with the test image.
Fixes https://github.com/flutter/flutter/issues/141488
- [ x I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
Reverts flutter/flutter#142339
In the original change one of the tests included the same view twice which resulted in a different failure than the expected one. The second commit contains the fix for this. I don't understand how this wasn't caught presubmit on CI.
Reverts flutter/flutter#141484
Initiated by: eliasyishak
This change reverts the following previous change:
Original Description:
The existing `runApp` bootstraps the widget tree and renders the provided widget into the default view (which is currently the implicit View from `PlatformDispatcher.implicitView` and - in the future - may be a default-created window). Apps, that want more control over the View they are rendered in, need a new way to bootstrap the widget tree: `runWidget`. It does not make any assumptions about the View the provided widget is rendered into. Instead, it is up to the caller to include a View widget in the provided widget tree that specifies where content should be rendered. In the future, this may enable developers to create a custom window for their app instead of relying on the default-created one.
The existing `runApp` bootstraps the widget tree and renders the provided widget into the default view (which is currently the implicit View from `PlatformDispatcher.implicitView` and - in the future - may be a default-created window). Apps, that want more control over the View they are rendered in, need a new way to bootstrap the widget tree: `runWidget`. It does not make any assumptions about the View the provided widget is rendered into. Instead, it is up to the caller to include a View widget in the provided widget tree that specifies where content should be rendered. In the future, this may enable developers to create a custom window for their app instead of relying on the default-created one.
When a `TextField` is rendered before a `Navigator`, it breaks in semantics mode. This is because the framework generates the incorrect semantics tree (excludes the TextField) and when that tree gets sent to the engine, we don't get the signal to create the corresponding `<input>` element.
This happens for a few reasons:
* `ModalBarrier` uses `BlockSemantics` to drop the semantics of routes beneath the current route in `Navigator`
* `ModalBarrier` mistakenly recognizes the widget outside of the `Navigator` to be its sibling
* So we end up dropping the semantics node of the `TextField` rendered before it.
The fix is to let `Navigator` generate a semantics node so that `ModalBarrier` doesn't mistakenly think widgets outside of `Navigator` are its siblings.
`Navigator` doesn't currently do this, which causes all the nodes generated from its widget subtree to be directly attached to the parent semantics node above `Navigator` - since this is also the parent of `TextField`, it considers them siblings.
Fixes https://github.com/flutter/flutter/issues/129324
Much nicer calling API and simplifies evolving this API in the future.
I wish we could write a dart fix for this, but that's blocked on https://github.com/dart-lang/sdk/issues/54668.
The old doc says that, AutomatedTestWidgetsFlutterBinding for `flutter test` and LiveTestWidgetsFlutterBinding for `flutter run`. However, suppose we `flutter test integration_test/simple_test.dart` with the following code:
```
void main() {
testWidgets('hi', (WidgetTester tester) async {
print('hi ${TestWidgetsFlutterBinding.instance} ${Platform.operatingSystem}');
});
}
```
We will see: `hi <IntegrationTestWidgetsFlutterBinding> ios`. Therefore, we see `IntegrationTestWidgetsFlutterBinding` is used in a `flutter test` command, which is contrary to the documentation.
This reverts commit
d24c01bd0c.
The original change was reverted because it caused some apps to get
stuck on the splash screen on some phones.
An investigation determined that this was due to a rounding error.
Example: The device reports a physical size of 1008.0 x 2198.0 with a
dpr of 1.912500023841858. Flutter would translate that to a logical size
of 527.0588169589221 x 1149.2810314243163 and use that as the input for
its layout algorithm. Since the constraints here are tight, the layout
algorithm would determine that the resulting logical size of the root
render object must be 527.0588169589221 x 1149.2810314243163.
Translating this back to physical pixels by applying the dpr resulted in
a physical size of 1007.9999999999999 x 2198.0 for the frame. Android
now rejected that frame because it didn't match the expected size of
1008.0 x 2198.0 and since no frame had been rendered would never take
down the splash screen.
Prior to dynamically sized views, this wasn't an issue because we would
hard-code the frame size to whatever the requested size was.
Changes in this PR over the original PR:
* The issue has been fixed now by constraining the calculated physical
size to the input physical constraints which makes sure that we always
end up with a size that is acceptable to the operating system.
* The `ViewConfiguration` was refactored to use the slightly more
convenient `BoxConstraints` over the `ViewConstraints` to represent
constraints. Both essentially represent the same thing, but
`BoxConstraints` are more powerful and we avoid a couple of translations
between the two by translating the` ViewConstraints` from the
`FlutterView` to `BoxConstraints` directly when the `ViewConfiguration`
is created.
All changes over the original PR are contained in the second commit of
this PR.
Fixes b/316813075
Part of https://github.com/flutter/flutter/issues/134501.
Reverts flutter/flutter#139717
Initiated by: LongCatIsLooong
This change reverts the following previous change:
Original Description:
Fixes https://github.com/flutter/flutter/issues/131435, #104594, #43400
Needs https://github.com/flutter/engine/pull/48774 (to fix the web test failure).
Currently the method we use for text span hit testing `TextPainter.getPositionForOffset` always returns the closest `TextPosition`, even when the given offset is far away from the text.
The new TextPaintes method tells you the layout bounds (`width = letterspacing / 2 + x_advance + letterspacing / 2`, `height = font ascent + font descent`) of a character, the PR changes the hit testing implementation such that a TextSpan is only considered hit if the point-down event landed in one of it's character's layout bounds.
Potential issues:
1. In theory since the text is baseline aligned, we should use the max ascent and max descent of each character to calculate the height of the text span's hit-test region, in case some characters in the span have to fall back to a different font, but that will be slower and it typically doesn't make a huge difference.
This is a breaking change. It also introduces a new finder and a new method `WidgetTester.tapOnText`: `await tester.tapOnText('string to match')` for ease of migration.
Fixes https://github.com/flutter/flutter/issues/131435, #104594, #43400
Needs https://github.com/flutter/engine/pull/48774 (to fix the web test failure).
Currently the method we use for text span hit testing `TextPainter.getPositionForOffset` always returns the closest `TextPosition`, even when the given offset is far away from the text.
The new TextPaintes method tells you the layout bounds (`width = letterspacing / 2 + x_advance + letterspacing / 2`, `height = font ascent + font descent`) of a character, the PR changes the hit testing implementation such that a TextSpan is only considered hit if the point-down event landed in one of it's character's layout bounds.
Potential issues:
1. In theory since the text is baseline aligned, we should use the max ascent and max descent of each character to calculate the height of the text span's hit-test region, in case some characters in the span have to fall back to a different font, but that will be slower and it typically doesn't make a huge difference.
This is a breaking change. It also introduces a new finder and a new method `WidgetTester.tapOnText`: `await tester.tapOnText('string to match')` for ease of migration.
1. Move leak_tracker and leak_tracker_testing out of direct dependencies.
2. Move leak_tracker_flutter_testing from dev to prod dependencies for flutter_test
It is prerequisite for https://github.com/flutter/flutter/issues/135856
Pinning the package:web dependency constrains downstream packages from
using newer versions and making sure they support the version pinned in
Flutter. Since the usage of package:web in Flutter is light, we should
instead have a small shim like the engine and keep package:web as a dev
dependency only.
This PR adds `String? identifier` to `Semantics` and `SemanticsProperties`. The `identifier` will be exposed on Android as `resource-id` and on iOS as `accessibilityIdentifier`.
Mainly targeted at #17988
Initial Engine PR with Android support: https://github.com/flutter/engine/pull/47961
iOS Engine PR: https://github.com/flutter/engine/pull/48858
### Migration
This change breaks the SemanticsUpdateBuilder API which is on the Framework<-->Engine border. For more details see [engine PR](https://github.com/flutter/engine/pull/47961).
Steps:
part 1: [engine] add `SemanticsUpdateBuilderNew` https://github.com/flutter/engine/pull/47961
**part 2: [flutter] use `SemanticsUpdateBuilderNew`** <-- we are here
part 3: [engine] update `SemanticsUpdateBuilder` to be the same as `SemanticsUpdateBuilderNew`*
part 4: [flutter] use (now updated) `SemanticsUpdateBuilder` again.
part 5: [engine] remove `SemanticsBuilderNew`
Towards https://github.com/flutter/flutter/issues/134501.
This change is based on https://github.com/flutter/engine/pull/48090. It changes the `RenderView` to be dynamically sized based on its content if the `FlutterView` it is configured with allows it (i.e. the `FlutterView` has loose `FlutterView.physicalConstraints`). For that, it uses those `physicalConstraints` as input to the layout algorithm by passing them on to its child (after translating them to logical constraints via the device pixel ratio). The resulting `Size` that the `RenderView` would like to be is then communicated back to the engine by passing it to the `FlutterView.render` call.
Tests will fail until https://github.com/flutter/engine/pull/48090 has rolled into the framework.
This updates the implementation to use the stopwatch from the Clock object and pipes it through to the TestWidgetsFlutterBinding so it will be kept in sync with FakeAsync.
Relands https://github.com/flutter/flutter/pull/138843 attempted to reland https://github.com/flutter/flutter/pull/137381 which attempted to reland #132291
Fixes https://github.com/flutter/flutter/issues/97761
1. The original change was reverted due to flakiness it introduced in tests that use fling gestures.
* Using a mocked clock through the test binding fixes this now
2. It was reverted a second time because a change at tip of tree broke it, exposing memory leaks, but it was not rebased before landing.
* These leaks are now fixed
3. It was reverted a third time, because we were so excellently quick to revert those other times, that we did not notice the broken benchmark that only runs in postsubmit.
* The benchmark is now fixed
`FakeView` wraps the same underlying `FlutterView`. Sending semantics updates and Scene objects from multiple fake views into the same engine `FlutterView` violates contracts with the engine. This PR stubs out `render` and `updateSemantics` methods in `FakeView` classes to prevent that.
This unblocks https://github.com/flutter/engine/pull/48251, which implements multi-view semantics for web.
This version is needed so that dart:js_interop can move to extension
types. Also adds some code to handle some breaking changes:
- Body -> Response. Body was an IDL interface mixin type we exposed in
dart:html. Going forward, users should either use Request or Response.
- Casts to JSAny. These are temporary until we move package:web types to
extension types. Currently, package:web types can't implement JSObject
as JSObject will move to be an extension type itself.
Co-authored-by: Kevin Moore <kevmoo@users.noreply.github.com>
Reverts flutter/flutter#137381
Initiated by: Piinks
This change reverts the following previous change:
Original Description:
This updates the implementation to use the stopwatch from the Clock object and piping it through to the TestWidgetsFlutterBinding so it will be kept in sync with FakeAsync.
Relands #132291
Fixes https://github.com/flutter/flutter/issues/97761
The change was reverted due to flakiness it introduced in tests that use fling gestures.
* https://github.com/flutter/flutter/issues/135728
Fixes https://github.com/flutter/flutter/issues/137696
This will get the tree green again.
The problem is that `CustomSemanticsAction` has static state in it, and todays test seed order makes things unhappy.
