Leak clean up. (#144803)

Fix some leaks and mark others.

[Known leaks](https://github.com/issues?q=is%3Aopen+is%3Aissue+label%3A%22a%3A+leak+tracking%22+-label%3A%22c%3A+new+feature%22+)

packages/flutter/lib/src/material/menu_anchor.dart

@@ -3263,6 +3263,12 @@ class _MenuPanel extends StatefulWidget {
 class _MenuPanelState extends State<_MenuPanel> {
   ScrollController scrollController = ScrollController();
 
+  @override
+  void dispose() {
+    scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     final (MenuStyle? themeStyle, MenuStyle defaultStyle) = switch (widget.orientation) {

packages/flutter/lib/src/material/tabs.dart

@@ -1410,18 +1410,23 @@ class _TabBarState extends State<TabBar> {
       ?? tabBarTheme.indicatorSize
       ?? _defaults.indicatorSize!;
 
+    final _IndicatorPainter? oldPainter = _indicatorPainter;
+
     _indicatorPainter = !_controllerIsValid ? null : _IndicatorPainter(
       controller: _controller!,
       indicator: _getIndicator(indicatorSize),
       indicatorSize: indicatorSize,
       indicatorPadding: widget.indicatorPadding,
       tabKeys: _tabKeys,
-      old: _indicatorPainter,
+      // Passing old painter so that the constructor can copy some values from it.
+      old: oldPainter,
       labelPaddings: _labelPaddings,
       dividerColor: widget.dividerColor ?? tabBarTheme.dividerColor ?? _defaults.dividerColor,
       dividerHeight: widget.dividerHeight ?? tabBarTheme.dividerHeight ?? _defaults.dividerHeight,
       showDivider: theme.useMaterial3 && !widget.isScrollable,
     );
+
+    oldPainter?.dispose();
   }
 
   @override

packages/flutter/test/animation/live_binding_test.dart

@@ -9,6 +9,7 @@ library;
 
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 void main() {
   /*
@@ -77,7 +78,10 @@ void main() {
     // Currently skipped due to daily flake: https://github.com/flutter/flutter/issues/87588
   }, skip: true); // Typically skip: isBrowser https://github.com/flutter/flutter/issues/42767
 
-  testWidgets('Should show event indicator for pointer events with setSurfaceSize', (WidgetTester tester) async {
+  testWidgets('Should show event indicator for pointer events with setSurfaceSize',
+  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (WidgetTester tester) async {
     final AnimationSheetBuilder animationSheet = AnimationSheetBuilder(frameSize: const Size(200, 200), allLayers: true);
     addTearDown(animationSheet.dispose);
     final List<Offset> taps = <Offset>[];

packages/flutter/test/cupertino/material/tab_scaffold_test.dart

@@ -7,12 +7,16 @@ import 'dart:typed_data';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import '../../image_data.dart';
 
 late List<int> selectedTabs;
 
 void main() {
+  // TODO(polina-c): dispose ImageStreamCompleterHandle, https://github.com/flutter/flutter/issues/145599 [leaks-to-clean]
+  LeakTesting.settings = LeakTesting.settings.withIgnoredAll();
+
   setUp(() {
     selectedTabs = <int>[];
   });

packages/flutter/test/cupertino/tab_scaffold_test.dart

@@ -6,6 +6,7 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import '../image_data.dart';
 import '../rendering/rendering_tester.dart' show TestCallbackPainter;
@@ -39,6 +40,9 @@ class MockCupertinoTabController extends CupertinoTabController {
 }
 
 void main() {
+  // TODO(polina-c): dispose ImageStreamCompleterHandle, https://github.com/flutter/flutter/issues/145599 [leaks-to-clean]
+  LeakTesting.settings = LeakTesting.settings.withIgnoredAll();
+
   setUp(() {
     selectedTabs = <int>[];
   });
@@ -244,7 +248,9 @@ void main() {
     );
   });
 
-  testWidgets('Programmatic tab switching by changing the index of an existing controller', (WidgetTester tester) async {
+  testWidgets('Programmatic tab switching by changing the index of an existing controller',
+    experimentalLeakTesting: LeakTesting.settings.withCreationStackTrace(),
+  (WidgetTester tester) async {
     final CupertinoTabController controller = CupertinoTabController(initialIndex: 1);
     addTearDown(controller.dispose);
     final List<int> tabsPainted = <int>[];
@@ -825,6 +831,8 @@ void main() {
 
   testWidgets('A controller can control more than one CupertinoTabScaffold, '
     'removal of listeners does not break the controller',
+  // TODO(polina-c): dispose TabController, https://github.com/flutter/flutter/issues/144910 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
     (WidgetTester tester) async {
       final List<int> tabsPainted0 = <int>[];
       final List<int> tabsPainted1 = <int>[];
@@ -1094,7 +1102,9 @@ void main() {
     expect(find.text("don't lose me"), findsOneWidget);
   });
 
-  testWidgets('textScaleFactor is set to 1.0', (WidgetTester tester) async {
+  testWidgets('textScaleFactor is set to 1.0',
+  experimentalLeakTesting: LeakTesting.settings.withCreationStackTrace(),
+  (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: Builder(builder: (BuildContext context) {
@@ -1267,7 +1277,10 @@ void main() {
           .setMockMethodCallHandler(SystemChannels.platform, null);
     });
 
-    testWidgets('System back navigation inside of tabs', (WidgetTester tester) async {
+    testWidgets('System back navigation inside of tabs',
+    // TODO(polina-c): dispose TabController, https://github.com/flutter/flutter/issues/144910
+    experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+    (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           home: MediaQuery(

packages/flutter/test/cupertino/tab_test.dart

@@ -5,6 +5,7 @@
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 void main() {
   testWidgets('Use home', (WidgetTester tester) async {
@@ -81,7 +82,9 @@ void main() {
     expect(find.text('generated home'), findsOneWidget);
   });
 
-  testWidgets('Use onUnknownRoute', (WidgetTester tester) async {
+  testWidgets('Use onUnknownRoute',
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+  (WidgetTester tester) async {
     late String unknownForRouteCalled;
     await tester.pumpWidget(
       CupertinoApp(

packages/flutter/test/flutter_test_config.dart

@@ -49,6 +49,12 @@ Future<void> testExecutable(FutureOr<void> Function() testMain) {
     LeakTesting.settings = LeakTesting.settings.withIgnored(
       createdByTestHelpers: true,
       allNotGCed: true,
+      classes: <String>[
+        // TODO(polina-c): CurvedAnimation is leaking, https://github.com/flutter/flutter/issues/145600 [leaks-to-clean]
+        'CurvedAnimation',
+        // TODO(polina-c): _NullElement is leaking, https://github.com/flutter/flutter/issues/145602 [leaks-to-clean]
+        '_NullElement',
+      ],
     );
   }
 

packages/flutter/test/gestures/drag_test.dart

@@ -5,6 +5,7 @@
 import 'package:flutter/gestures.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import 'gesture_tester.dart';
 
@@ -764,7 +765,10 @@ void main() {
     ]);
   });
 
-  testGesture('Horizontal drag with multiple pointers - averageBoundaryPointers', (GestureTester tester) {
+  testGesture('Horizontal drag with multiple pointers - averageBoundaryPointers',
+  // TODO(polina-c): dispose gesture recognizers https://github.com/flutter/flutter/issues/145605 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (GestureTester tester) {
     final HorizontalDragGestureRecognizer drag =
     HorizontalDragGestureRecognizer()
       ..multitouchDragStrategy = MultitouchDragStrategy.averageBoundaryPointers;
@@ -924,7 +928,10 @@ void main() {
     ]);
   });
 
-  testGesture('Vertical drag with multiple pointers - averageBoundaryPointers', (GestureTester tester) {
+  testGesture('Vertical drag with multiple pointers - averageBoundaryPointers',
+  // TODO(polina-c): dispose gesture recognizers https://github.com/flutter/flutter/issues/145605 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (GestureTester tester) {
     final VerticalDragGestureRecognizer drag =
     VerticalDragGestureRecognizer()
       ..multitouchDragStrategy = MultitouchDragStrategy.averageBoundaryPointers;
@@ -1084,7 +1091,10 @@ void main() {
     ]);
   });
 
-  testGesture('Pan drag with multiple pointers - averageBoundaryPointers', (GestureTester tester) {
+  testGesture('Pan drag with multiple pointers - averageBoundaryPointers',
+  // TODO(polina-c): dispose gesture recognizers https://github.com/flutter/flutter/issues/145605 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (GestureTester tester) {
     final PanGestureRecognizer drag =
     PanGestureRecognizer()
       ..multitouchDragStrategy = MultitouchDragStrategy.averageBoundaryPointers;

packages/flutter/test/gestures/gesture_tester.dart

@@ -5,6 +5,7 @@
 import 'package:fake_async/fake_async.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 import 'package:meta/meta.dart';
 
 class GestureTester {
@@ -25,10 +26,14 @@ class GestureTester {
 typedef GestureTest = void Function(GestureTester tester);
 
 @isTest
-void testGesture(String description, GestureTest callback) {
-  testWidgets(description, (_) async {
-    FakeAsync().run((FakeAsync async) {
-      callback(GestureTester._(async));
-    });
-  });
+void testGesture(String description, GestureTest callback, {LeakTesting? experimentalLeakTesting}) {
+  testWidgets(
+    description,
+    (_) async {
+      FakeAsync().run((FakeAsync async) {
+        callback(GestureTester._(async));
+      });
+    },
+    experimentalLeakTesting: experimentalLeakTesting,
+  );
 }

packages/flutter/test/material/app_test.dart

@@ -8,6 +8,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 class StateMarker extends StatefulWidget {
   const StateMarker({ super.key, this.child });
@@ -369,7 +370,9 @@ void main() {
     expect(find.text('route "/b"', skipOffstage: false), findsNothing);
   });
 
-  testWidgets('onGenerateRoute / onUnknownRoute', (WidgetTester tester) async {
+  testWidgets('onGenerateRoute / onUnknownRoute',
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+  (WidgetTester tester) async {
     final List<String> log = <String>[];
     await tester.pumpWidget(
       MaterialApp(

packages/flutter/test/material/circle_avatar_test.dart

@@ -96,7 +96,7 @@ void main() {
   });
 
   testWidgets('CircleAvatar backgroundImage is used as a fallback for foregroundImage',
-  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
+  // TODO(polina-c): make sure images are disposed, https://github.com/flutter/flutter/issues/141388 [leaks-to-clean]
   experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
   (WidgetTester tester) async {
     final ErrorImageProvider errorImage = ErrorImageProvider();

packages/flutter/test/material/dropdown_menu_test.dart

@@ -8,8 +8,12 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_testing/leak_tracker_testing.dart';
 
 void main() {
+  // TODO(polina-c): _DropdownMenuState should not be used after disposal, https://github.com/flutter/flutter/issues/145622 [leaks-to-clean]
+  LeakTesting.settings = LeakTesting.settings.withIgnoredAll();
+
   const String longText = 'one two three four five six seven eight nine ten eleven twelve';
   final List<DropdownMenuEntry<TestMenu>> menuChildren = <DropdownMenuEntry<TestMenu>>[];
 
@@ -1800,8 +1804,7 @@ void main() {
     checkExpectedHighlight(searchResult: 'Read', otherItems: <String>['All', 'Unread']);
   });
 
-   testWidgets('onSelected gets called when a selection is made in a nested menu',
-      (WidgetTester tester) async {
+   testWidgets('onSelected gets called when a selection is made in a nested menu', (WidgetTester tester) async {
     int selectionCount = 0;
 
     final ThemeData themeData = ThemeData();

packages/flutter/test/material/menu_style_test.dart

@@ -6,7 +6,6 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-
 void main() {
   Finder findMenuPanels() {
     return find.byWidgetPredicate((Widget widget) => widget.runtimeType.toString() == '_MenuPanel');

packages/flutter/test/material/scaffold_test.dart

@@ -2207,8 +2207,7 @@ void main() {
 
     testWidgets(
       'didUpdate bottomSheet while a previous bottom sheet is still displayed',
-      // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
-      experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+      experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
       (WidgetTester tester) async {
         final GlobalKey<ScaffoldState> key = GlobalKey<ScaffoldState>();
         const Key buttonKey = Key('button');

packages/flutter/test/material/tab_bar_theme_test.dart

@@ -973,8 +973,7 @@ void main() {
   });
 
   testWidgets(
-    "TabBarTheme's labelColor & unselectedLabelColor override labelStyle & unselectedLabelStyle colors",
-    (WidgetTester tester) async {
+    "TabBarTheme's labelColor & unselectedLabelColor override labelStyle & unselectedLabelStyle colors", (WidgetTester tester) async {
       const Color labelColor = Color(0xfff00000);
       const Color unselectedLabelColor = Color(0x95ff0000);
       const TextStyle labelStyle = TextStyle(

packages/flutter/test/material/tabs_test.dart

@@ -7,6 +7,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import '../widgets/semantics_tester.dart';
 import 'feedback_tester.dart';
@@ -112,6 +113,9 @@ Widget buildLeftRightApp({required List<String> tabs, required String value, boo
 }
 
 void main() {
+  // TODO(polina-c): dispose TabController, https://github.com/flutter/flutter/issues/144910 [leaks-to-clean]
+  LeakTesting.settings = LeakTesting.settings.withIgnoredAll();
+
   setUp(() {
     debugResetSemanticsIdCounter();
   });

packages/flutter/test/painting/system_fonts_test.dart

@@ -10,7 +10,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 Future<void> verifyMarkedNeedsLayoutDuringTransientCallbacksPhase(WidgetTester tester, RenderObject renderObject) async {
   assert(!renderObject.debugNeedsLayout);
@@ -37,9 +36,6 @@ Future<void> verifyMarkedNeedsLayoutDuringTransientCallbacksPhase(WidgetTester t
 }
 
 void main() {
-  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
-  LeakTesting.settings = LeakTesting.settings.withIgnored(classes: <String>['CurvedAnimation']);
-
   testWidgets('RenderParagraph relayout upon system fonts changes', (WidgetTester tester) async {
     await tester.pumpWidget(
       const MaterialApp(

packages/flutter/test/widgets/basic_test.dart

@@ -22,6 +22,7 @@ void main() {
   group('RawImage', () {
     testWidgets('properties', (WidgetTester tester) async {
       final ui.Image image1 = (await tester.runAsync<ui.Image>(() => createTestImage()))!;
+      addTearDown(image1.dispose);
 
       await tester.pumpWidget(
         Directionality(
@@ -50,6 +51,7 @@ void main() {
       expect(renderObject.isAntiAlias, false);
 
       final ui.Image image2 = (await tester.runAsync<ui.Image>(() => createTestImage(width: 2, height: 2)))!;
+      addTearDown(image2.dispose);
       const String debugImageLabel = 'debugImageLabel';
       const double width = 1;
       const double height = 1;

packages/flutter/test/widgets/box_sliver_mismatch_test.dart

@@ -5,9 +5,12 @@
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 void main() {
-  testWidgets('Sliver in a box', (WidgetTester tester) async {
+  testWidgets('Sliver in a box',
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+  (WidgetTester tester) async {
     await tester.pumpWidget(
       DecoratedBox(
         decoration: const BoxDecoration(),
@@ -32,7 +35,9 @@ void main() {
     expect(tester.takeException(), isFlutterError);
   });
 
-  testWidgets('Box in a sliver', (WidgetTester tester) async {
+  testWidgets('Box in a sliver',
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+  (WidgetTester tester) async {
     late ViewportOffset offset1;
     addTearDown(() => offset1.dispose());
     await tester.pumpWidget(

packages/flutter/test/widgets/build_scope_test.dart

@@ -4,6 +4,7 @@
 
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import 'test_widgets.dart';
 
@@ -164,7 +165,9 @@ void main() {
     await tester.pumpWidget(Container());
   });
 
-  testWidgets('Setting state during dispose is forbidden', (WidgetTester tester) async {
+  testWidgets('Setting state during dispose is forbidden',
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+  (WidgetTester tester) async {
     await tester.pumpWidget(const BadDisposeWidget());
     expect(tester.takeException(), isNull);
     await tester.pumpWidget(Container());

packages/flutter/test/widgets/context_menu_controller_test.dart

@@ -5,7 +5,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import 'clipboard_utils.dart';
 import 'editable_text_utils.dart';
@@ -91,10 +90,7 @@ void main() {
     expect(find.byKey(key2), findsNothing);
   });
 
-  testWidgets('A menu can be hidden and then reshown',
-  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
-  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
-  (WidgetTester tester) async {
+  testWidgets('A menu can be hidden and then reshown', (WidgetTester tester) async {
     final GlobalKey key1 = GlobalKey();
     late final BuildContext context;
 
@@ -182,10 +178,7 @@ void main() {
     controller.remove();
   });
 
-  testWidgets('Calling show when a built-in widget is already showing its context menu hides the built-in menu',
-  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
-  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
-  (WidgetTester tester) async {
+  testWidgets('Calling show when a built-in widget is already showing its context menu hides the built-in menu', (WidgetTester tester) async {
     final GlobalKey builtInKey = GlobalKey();
     final GlobalKey directKey = GlobalKey();
     late final BuildContext context;

packages/flutter/test/widgets/draggable_test.dart

@@ -2541,7 +2541,10 @@ void main() {
   });
 
   // Regression test for https://github.com/flutter/flutter/issues/6128.
-  testWidgets('Draggable plays nice with onTap', (WidgetTester tester) async {
+  testWidgets('Draggable plays nice with onTap',
+  // TODO(polina-c): fix the leaking ImmediateMultiDragGestureRecognizer https://github.com/flutter/flutter/pull/144396 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (WidgetTester tester) async {
     late final OverlayEntry entry;
     addTearDown(() => entry..remove()..dispose());
 
@@ -3432,7 +3435,7 @@ void main() {
 
   // Regression test for https://github.com/flutter/flutter/issues/92083
   testWidgets('feedback respect the MouseRegion cursor configure',
-  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
+  // TODO(polina-c): fix the leaking ImmediateMultiDragGestureRecognizer https://github.com/flutter/flutter/pull/144396 [leaks-to-clean]
   experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
   (WidgetTester tester) async {
     await tester.pumpWidget(

packages/flutter/test/widgets/ensure_visible_test.dart

@@ -7,6 +7,7 @@ import 'dart:math' as math;
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import 'two_dimensional_utils.dart';
 
@@ -1062,7 +1063,10 @@ void main() {
       return tester.element(findKey(vicinity));
     }
 
-    testWidgets('Axis.vertical', (WidgetTester tester) async {
+    testWidgets('Axis.vertical',
+    // TODO(polina-c): RenderTwoDimensionalViewport should dispose _delegate https://github.com/flutter/flutter/issues/145628 [leaks-to-clean]
+    experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+    (WidgetTester tester) async {
       await tester.pumpWidget(simpleBuilderTest(useCacheExtent: true));
 
       Scrollable.ensureVisible(findContext(

packages/flutter/test/widgets/mouse_region_test.dart

@@ -8,6 +8,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 class HoverClient extends StatefulWidget {
   const HoverClient({
@@ -1836,7 +1837,10 @@ void main() {
   });
 
   // Regression test for https://github.com/flutter/flutter/issues/67044
-  testWidgets('Handle mouse events should ignore the detached MouseTrackerAnnotation', (WidgetTester tester) async {
+  testWidgets('Handle mouse events should ignore the detached MouseTrackerAnnotation',
+  // TODO(polina-c): dispose gesture recognizers https://github.com/flutter/flutter/issues/145605 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (WidgetTester tester) async {
     await tester.pumpWidget(MaterialApp(
       home: Center(
         child: Draggable<int>(

packages/flutter/test/widgets/navigator_test.dart

@@ -10,6 +10,7 @@ import 'package:flutter/rendering.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import 'navigator_utils.dart';
 import 'observer_tester.dart';
@@ -1830,7 +1831,9 @@ void main() {
   });
 
   group('error control test', () {
-    testWidgets('onUnknownRoute null and onGenerateRoute returns null', (WidgetTester tester) async {
+    testWidgets('onGenerateRoute returns null',
+    experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+    (WidgetTester tester) async {
       final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
       await tester.pumpWidget(Navigator(
         key: navigatorKey,
@@ -1856,7 +1859,9 @@ void main() {
       );
     });
 
-    testWidgets('onUnknownRoute null and onGenerateRoute returns null', (WidgetTester tester) async {
+    testWidgets('onUnknownRoute null and onGenerateRoute returns null',
+    experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+    (WidgetTester tester) async {
       final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
       await tester.pumpWidget(Navigator(
         key: navigatorKey,
@@ -2895,7 +2900,9 @@ void main() {
       );
     });
 
-    testWidgets('throw if page list is empty', (WidgetTester tester) async {
+    testWidgets('throw if page list is empty',
+    experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(), // leaking by design because of exception
+    (WidgetTester tester) async {
       final List<TestPage> myPages = <TestPage>[];
       final FlutterExceptionHandler? originalOnError = FlutterError.onError;
       FlutterErrorDetails? firstError;

packages/flutter/test/widgets/shape_decoration_test.dart

@@ -94,7 +94,10 @@ Future<void> main() async {
     );
   });
 
-  testWidgets('TestBorder and Directionality - 2', (WidgetTester tester) async {
+  testWidgets('TestBorder and Directionality - 2',
+  // TODO(polina-c): dispose ImageStreamCompleterHandle, https://github.com/flutter/flutter/issues/145599 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (WidgetTester tester) async {
     final List<String> log = <String>[];
     await tester.pumpWidget(
       Directionality(

packages/flutter/test/widgets/view_test.dart

@@ -7,6 +7,7 @@ import 'dart:ui';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 import 'multi_view_testing.dart';
 
@@ -344,7 +345,10 @@ void main() {
     });
   });
 
-  testWidgets('correctly switches between view configurations', (WidgetTester tester) async {
+  testWidgets('correctly switches between view configurations',
+  // TODO(polina-c): clean up leaks, https://github.com/flutter/flutter/issues/134787 [leaks-to-clean]
+  experimentalLeakTesting: LeakTesting.settings.withIgnoredAll(),
+  (WidgetTester tester) async {
     await tester.pumpWidget(
       wrapWithView: false,
       View(