Cover more test/widgets tests with leak tracking #12. (#135385)

packages/flutter/test/widgets/animated_size_test.dart

@@ -435,7 +435,7 @@ void main() {
       );
     });
 
-    testWidgets('disposes animation and controller', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('disposes animation and controller', (WidgetTester tester) async {
       await tester.pumpWidget(
         const Center(
           child: AnimatedSize(

packages/flutter/test/widgets/framework_test.dart

@@ -1062,13 +1062,14 @@ void main() {
     element.createChild(0, after: null);
   });
 
-  testWidgets('GlobalKey - re-attach child to new parents, and the old parent is deactivated(unmounted)', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('GlobalKey - re-attach child to new parents, and the old parent is deactivated(unmounted)', (WidgetTester tester) async {
     // This is a regression test for https://github.com/flutter/flutter/issues/62055
     const Key key1 = GlobalObjectKey('key1');
     const Key key2 = GlobalObjectKey('key2');
     late StateSetter setState;
     int tabBarViewCnt = 2;
     TabController tabController = TabController(length: tabBarViewCnt, vsync: const TestVSync());
+    addTearDown(tabController.dispose);
 
     await tester.pumpWidget(Directionality(
       textDirection: TextDirection.ltr,
@@ -1101,6 +1102,7 @@ void main() {
     setState(() {
       tabBarViewCnt = 1;
       tabController = TabController(length: tabBarViewCnt, vsync: const TestVSync());
+      addTearDown(tabController.dispose);
     });
 
     await tester.pump(const Duration(seconds: 1)); // finish the animation

packages/flutter/test/widgets/html_element_view_test.dart

@@ -15,6 +15,7 @@ import 'package:flutter/src/widgets/_html_element_view_web.dart'
     show debugOverridePlatformViewRegistry;
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 import 'package:web/web.dart' as web;
 
 final Object _mockHtmlElement = Object();
@@ -42,7 +43,7 @@ void main() {
   });
 
   group('HtmlElementView', () {
-    testWidgets('Create HTML view', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Create HTML view', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
 
@@ -64,7 +65,7 @@ void main() {
       );
     });
 
-    testWidgets('Create HTML view with PlatformViewCreatedCallback', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Create HTML view with PlatformViewCreatedCallback', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
 
@@ -97,7 +98,7 @@ void main() {
       );
     });
 
-    testWidgets('Create HTML view with creation params', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Create HTML view with creation params', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
       await tester.pumpWidget(
@@ -132,7 +133,7 @@ void main() {
       );
     });
 
-    testWidgets('Resize HTML view', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Resize HTML view', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
       await tester.pumpWidget(
@@ -168,7 +169,7 @@ void main() {
       );
     });
 
-    testWidgets('Change HTML view type', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Change HTML view type', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
       fakePlatformViewRegistry.registerViewFactory('maps', _mockViewFactory);
@@ -200,7 +201,7 @@ void main() {
       );
     });
 
-    testWidgets('Dispose HTML view', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Dispose HTML view', (WidgetTester tester) async {
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
       await tester.pumpWidget(
         const Center(
@@ -227,7 +228,7 @@ void main() {
       );
     });
 
-    testWidgets('HTML view survives widget tree change', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('HTML view survives widget tree change', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       fakePlatformViewRegistry.registerViewFactory('webview', _mockViewFactory);
       final GlobalKey key = GlobalKey();
@@ -259,7 +260,7 @@ void main() {
       );
     });
 
-    testWidgets('HtmlElementView has correct semantics', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('HtmlElementView has correct semantics', (WidgetTester tester) async {
       final SemanticsHandle handle = tester.ensureSemantics();
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
       expect(currentViewId, greaterThanOrEqualTo(0));
@@ -306,7 +307,7 @@ void main() {
       debugOverridePlatformViewRegistry = null;
     });
 
-    testWidgets('Create platform view from tagName', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Create platform view from tagName', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
 
       await tester.pumpWidget(
@@ -331,7 +332,7 @@ void main() {
       expect(htmlElement.tagName, equalsIgnoringCase('div'));
     });
 
-    testWidgets('Create invisible platform view', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('Create invisible platform view', (WidgetTester tester) async {
       final int currentViewId = platformViewsRegistry.getNextPlatformViewId();
 
       await tester.pumpWidget(
@@ -357,7 +358,7 @@ void main() {
       expect(htmlElement.tagName, equalsIgnoringCase('script'));
     });
 
-    testWidgets('onElementCreated', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('onElementCreated', (WidgetTester tester) async {
       final List<Object> createdElements = <Object>[];
       void onElementCreated(Object element) {
         createdElements.add(element);

packages/flutter/test/widgets/router_restoration_test.dart

@@ -5,9 +5,10 @@
 import 'package:flutter/foundation.dart';
 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() {
-  testWidgets('Router state restoration without RouteInformationProvider', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Router state restoration without RouteInformationProvider', (WidgetTester tester) async {
     final UniqueKey router = UniqueKey();
     _TestRouterDelegate delegate() => tester.widget<Router<Object?>>(find.byKey(router)).routerDelegate as _TestRouterDelegate;
 
@@ -39,7 +40,12 @@ void main() {
     expect(find.text('Current config: /foo'), findsOneWidget);
     expect(delegate().newRoutePaths, isEmpty);
     expect(delegate().restoredRoutePaths, <String>['/foo', '/foo']);
-  });
+  },
+  leakTrackingTestConfig: const LeakTrackingTestConfig(
+    // TODO(ksokolovskyi): remove after fixing
+    // https://github.com/flutter/flutter/issues/134205
+    notDisposedAllowList: <String, int?> {'_RestorableRouteInformation': 2},
+  ));
 
   testWidgets('Router state restoration with RouteInformationProvider', (WidgetTester tester) async {
     final UniqueKey router = UniqueKey();
@@ -152,22 +158,37 @@ class _TestRouteInformationProvider extends RouteInformationProvider with Change
   }
 }
 
-class _TestWidget extends StatelessWidget {
+class _TestWidget extends StatefulWidget {
   const _TestWidget({this.withInformationProvider = false, this.routerKey});
 
   final bool withInformationProvider;
   final Key? routerKey;
 
+  @override
+  State<_TestWidget> createState() => _TestWidgetState();
+}
+
+class _TestWidgetState extends State<_TestWidget> {
+  final _TestRouterDelegate _delegate = _TestRouterDelegate();
+  final _TestRouteInformationProvider _routeInformationProvider = _TestRouteInformationProvider();
+
+  @override
+  void dispose() {
+    _delegate.dispose();
+    _routeInformationProvider.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return RootRestorationScope(
       restorationId: 'root',
       child: Router<String>(
-        key: routerKey,
+        key: widget.routerKey,
         restorationScopeId: 'router',
-        routerDelegate: _TestRouterDelegate(),
+        routerDelegate: _delegate,
         routeInformationParser: _TestRouteInformationParser(),
-        routeInformationProvider: withInformationProvider ? _TestRouteInformationProvider() : null,
+        routeInformationProvider: widget.withInformationProvider ? _routeInformationProvider : null,
       ),
     );
   }

packages/flutter/test/widgets/scrollable_test.dart

@@ -861,12 +861,13 @@ void main() {
     expect(targetMidLeftPage1, findsOneWidget);
   });
 
-  testWidgets('ensureVisible does not move TabViews', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('ensureVisible does not move TabViews', (WidgetTester tester) async {
     final TickerProvider vsync = TestTickerProvider();
     final TabController controller = TabController(
       length: 3,
       vsync: vsync,
     );
+    addTearDown(controller.dispose);
 
     await tester.pumpWidget(
       Directionality(