diff --git a/packages/flutter/test/cupertino/dialog_test.dart b/packages/flutter/test/cupertino/dialog_test.dart
index 7ae06059ca..4ac91602d8 100644
--- a/packages/flutter/test/cupertino/dialog_test.dart
+++ b/packages/flutter/test/cupertino/dialog_test.dart
@@ -15,11 +15,12 @@ import 'package:flutter/foundation.dart';
 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 '../widgets/semantics_tester.dart';
 
 void main() {
-  testWidgets('Alert dialog control test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Alert dialog control test', (WidgetTester tester) async {
     bool didDelete = false;
 
     await tester.pumpWidget(
@@ -58,7 +59,7 @@ void main() {
     expect(find.text('Delete'), findsNothing);
   });
 
-  testWidgets('Dialog not barrier dismissible by default', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog not barrier dismissible by default', (WidgetTester tester) async {
     await tester.pumpWidget(createAppWithCenteredButton(const Text('Go')));
 
     final BuildContext context = tester.element(find.text('Go'));
@@ -86,7 +87,7 @@ void main() {
 
   });
 
- testWidgets('Dialog configurable to be barrier dismissible', (WidgetTester tester) async {
+ testWidgetsWithLeakTracking('Dialog configurable to be barrier dismissible', (WidgetTester tester) async {
     await tester.pumpWidget(createAppWithCenteredButton(const Text('Go')));
 
     final BuildContext context = tester.element(find.text('Go'));
@@ -114,7 +115,7 @@ void main() {
     expect(find.text('Dialog'), findsNothing);
   });
 
-  testWidgets('Dialog destructive action style', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog destructive action style', (WidgetTester tester) async {
     await tester.pumpWidget(boilerplate(const CupertinoDialogAction(
       isDestructiveAction: true,
       child: Text('Ok'),
@@ -125,7 +126,7 @@ void main() {
     expect(widget.style.color!.withAlpha(255), CupertinoColors.systemRed.color);
   });
 
-  testWidgets('Dialog default action style', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog default action style', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoTheme(
       data: const CupertinoThemeData(
@@ -142,7 +143,7 @@ void main() {
     expect(widget.style.color!.withAlpha(255), CupertinoColors.systemGreen.color);
   });
 
-  testWidgets('Dialog dark theme', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog dark theme', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: MediaQuery(
@@ -178,7 +179,7 @@ void main() {
     );
   });
 
-  testWidgets('Has semantic annotations', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Has semantic annotations', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
     await tester.pumpWidget(const MaterialApp(home: Material(
       child: CupertinoAlertDialog(
@@ -250,7 +251,7 @@ void main() {
     semantics.dispose();
   });
 
-  testWidgets('Dialog default action style', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog default action style', (WidgetTester tester) async {
     await tester.pumpWidget(boilerplate(const CupertinoDialogAction(
       isDefaultAction: true,
       child: Text('Ok'),
@@ -261,7 +262,7 @@ void main() {
     expect(widget.style.fontWeight, equals(FontWeight.w600));
   });
 
-  testWidgets('Dialog default and destructive action styles', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog default and destructive action styles', (WidgetTester tester) async {
     await tester.pumpWidget(boilerplate(const CupertinoDialogAction(
       isDefaultAction: true,
       isDestructiveAction: true,
@@ -274,7 +275,7 @@ void main() {
     expect(widget.style.fontWeight, equals(FontWeight.w600));
   });
 
-  testWidgets('Dialog disabled action style', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog disabled action style', (WidgetTester tester) async {
     await tester.pumpWidget(boilerplate(const CupertinoDialogAction(
       child: Text('Ok'),
     )));
@@ -285,7 +286,7 @@ void main() {
     expect(widget.style.color!.opacity, lessThanOrEqualTo(128 / 255));
   });
 
-  testWidgets('Dialog enabled action style', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog enabled action style', (WidgetTester tester) async {
     await tester.pumpWidget(boilerplate(CupertinoDialogAction(
       child: const Text('Ok'),
       onPressed: () {},
@@ -296,8 +297,9 @@ void main() {
     expect(widget.style.color!.opacity, equals(1.0));
   });
 
-  testWidgets('Message is scrollable, has correct padding with large text sizes', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Message is scrollable, has correct padding with large text sizes', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -352,8 +354,9 @@ void main() {
     expect(tester.getSize(find.widgetWithText(CupertinoDialogAction, 'OK')), equals(const Size(310.0, 98.0)));
   });
 
-  testWidgets('Dialog respects small constraints.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog respects small constraints.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -397,8 +400,9 @@ void main() {
     );
   });
 
-  testWidgets('Button list is scrollable, has correct position with large text sizes.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Button list is scrollable, has correct position with large text sizes.', (WidgetTester tester) async {
     final ScrollController actionScrollController = ScrollController();
+    addTearDown(actionScrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -457,9 +461,10 @@ void main() {
     expect(tester.getSize(find.widgetWithText(CupertinoDialogAction, 'Cancel')).height, equals(148.0));
   });
 
-  testWidgets('Title Section is empty, Button section is not empty.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Title Section is empty, Button section is not empty.', (WidgetTester tester) async {
     const double textScaleFactor = 1.0;
     final ScrollController actionScrollController = ScrollController();
+    addTearDown(actionScrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -510,9 +515,10 @@ void main() {
     );
   });
 
-  testWidgets('Button section is empty, Title section is not empty.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Button section is empty, Title section is not empty.', (WidgetTester tester) async {
     const double textScaleFactor = 1.0;
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -551,8 +557,9 @@ void main() {
     );
   });
 
-  testWidgets('Actions section height for 1 button is height of button.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section height for 1 button is height of button.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -580,8 +587,9 @@ void main() {
     expect(okButtonBox.size.height, actionsSectionBox.size.height);
   });
 
-  testWidgets('Actions section height for 2 side-by-side buttons is height of tallest button.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section height for 2 side-by-side buttons is height of tallest button.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     late double dividerWidth; // Will be set when the dialog builder runs. Needs a BuildContext.
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
@@ -625,8 +633,9 @@ void main() {
     );
   });
 
-  testWidgets('Actions section height for 2 stacked buttons with enough room is height of both buttons.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section height for 2 stacked buttons with enough room is height of both buttons.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     late double dividerThickness; // Will be set when the dialog builder runs. Needs a BuildContext.
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
@@ -667,8 +676,9 @@ void main() {
     );
   });
 
-  testWidgets('Actions section height for 2 stacked buttons without enough room and regular font is 1.5 buttons tall.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section height for 2 stacked buttons without enough room and regular font is 1.5 buttons tall.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -701,8 +711,9 @@ void main() {
     );
   });
 
-  testWidgets('Actions section height for 2 stacked buttons without enough room and large accessibility font is 50% of dialog height.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section height for 2 stacked buttons without enough room and large accessibility font is 50% of dialog height.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -741,8 +752,9 @@ void main() {
     );
   });
 
-  testWidgets('Actions section height for 3 buttons without enough room is 1.5 buttons tall.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section height for 3 buttons without enough room is 1.5 buttons tall.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -785,8 +797,9 @@ void main() {
     );
   });
 
-  testWidgets('Actions section overscroll is painted white.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions section overscroll is painted white.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -833,8 +846,9 @@ void main() {
     ));
   });
 
-  testWidgets('Pressed button changes appearance and dividers disappear.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Pressed button changes appearance and dividers disappear.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     late double dividerThickness; // Will be set when the dialog builder runs. Needs a BuildContext.
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
@@ -946,7 +960,7 @@ void main() {
     await gesture.up();
   });
 
-  testWidgets('ScaleTransition animation for showCupertinoDialog()', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('ScaleTransition animation for showCupertinoDialog()', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: Center(
@@ -1024,7 +1038,7 @@ void main() {
     expect(find.byType(Transform), findsNothing);
   });
 
-  testWidgets('FadeTransition animation for showCupertinoDialog()', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('FadeTransition animation for showCupertinoDialog()', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: Center(
@@ -1117,7 +1131,7 @@ void main() {
     expect(transition.opacity.value, moreOrLessEquals(0.0, epsilon: 0.001));
   });
 
-  testWidgets('Actions are accessible by key', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Actions are accessible by key', (WidgetTester tester) async {
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -1147,7 +1161,7 @@ void main() {
     expect(find.byKey(const Key('option_3')), findsNothing);
   });
 
-  testWidgets('Dialog widget insets by MediaQuery viewInsets', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Dialog widget insets by MediaQuery viewInsets', (WidgetTester tester) async {
     await tester.pumpWidget(
       const MaterialApp(
         home: MediaQuery(
@@ -1177,7 +1191,7 @@ void main() {
     expect(tester.getRect(find.byType(Placeholder)), placeholderRectWithoutInsets.translate(10, 10));
   });
 
-  testWidgets('Material2 - Default cupertino dialog golden', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Material2 - Default cupertino dialog golden', (WidgetTester tester) async {
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         useMaterial3: false,
@@ -1208,7 +1222,7 @@ void main() {
     );
   });
 
-  testWidgets('Material3 - Default cupertino dialog golden', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Material3 - Default cupertino dialog golden', (WidgetTester tester) async {
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         useMaterial3: true,
@@ -1239,7 +1253,7 @@ void main() {
     );
   });
 
-  testWidgets('showCupertinoDialog - custom barrierLabel', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('showCupertinoDialog - custom barrierLabel', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
 
     await tester.pumpWidget(
@@ -1279,7 +1293,7 @@ void main() {
     semantics.dispose();
   });
 
-  testWidgets('CupertinoDialogRoute is state restorable', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('CupertinoDialogRoute is state restorable', (WidgetTester tester) async {
     await tester.pumpWidget(
       const CupertinoApp(
         restorationScopeId: 'app',
@@ -1309,10 +1323,11 @@ void main() {
     expect(find.byType(CupertinoAlertDialog), findsOneWidget);
   }, skip: isBrowser); // https://github.com/flutter/flutter/issues/33615
 
-  testWidgets('Conflicting scrollbars are not applied by ScrollBehavior to CupertinoAlertDialog', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Conflicting scrollbars are not applied by ScrollBehavior to CupertinoAlertDialog', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/83819
     const double textScaleFactor = 1.0;
     final ScrollController actionScrollController = ScrollController();
+    addTearDown(actionScrollController.dispose);
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
@@ -1348,7 +1363,7 @@ void main() {
     expect(find.byType(CupertinoScrollbar), findsNWidgets(2));
   }, variant: TargetPlatformVariant.all());
 
-  testWidgets('CupertinoAlertDialog scrollbars controllers should be different', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('CupertinoAlertDialog scrollbars controllers should be different', (WidgetTester tester) async {
     // https://github.com/flutter/flutter/pull/81278
     await tester.pumpWidget(
       const MaterialApp(
@@ -1375,7 +1390,7 @@ void main() {
   });
 
   group('showCupertinoDialog avoids overlapping display features', () {
-    testWidgets('positioning using anchorPoint', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('positioning using anchorPoint', (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           builder: (BuildContext context, Widget? child) {
@@ -1413,7 +1428,7 @@ void main() {
       expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
     });
 
-    testWidgets('positioning using Directionality', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('positioning using Directionality', (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           builder: (BuildContext context, Widget? child) {
@@ -1453,7 +1468,7 @@ void main() {
       expect(tester.getBottomRight(find.byType(Placeholder)), const Offset(800.0, 600.0));
     });
 
-    testWidgets('default positioning', (WidgetTester tester) async {
+    testWidgetsWithLeakTracking('default positioning', (WidgetTester tester) async {
       await tester.pumpWidget(
         CupertinoApp(
           builder: (BuildContext context, Widget? child) {
@@ -1491,7 +1506,7 @@ void main() {
     });
   });
 
-  testWidgets('Hovering over Cupertino alert dialog action updates cursor to clickable on Web', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Hovering over Cupertino alert dialog action updates cursor to clickable on Web', (WidgetTester tester) async {
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
diff --git a/packages/flutter/test/cupertino/magnifier_test.dart b/packages/flutter/test/cupertino/magnifier_test.dart
index ffa160d035..87c22f1b96 100644
--- a/packages/flutter/test/cupertino/magnifier_test.dart
+++ b/packages/flutter/test/cupertino/magnifier_test.dart
@@ -8,6 +8,7 @@ library;
 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';
 
 void main() {
   final Offset basicOffset = Offset(CupertinoMagnifier.kDefaultSize.width / 2,
@@ -48,7 +49,7 @@ void main() {
             animatedPositioned.left ?? 0, animatedPositioned.top ?? 0);
       }
 
-      testWidgets('should be at gesture position if does not violate any positioning rules', (WidgetTester tester) async {
+      testWidgetsWithLeakTracking('should be at gesture position if does not violate any positioning rules', (WidgetTester tester) async {
         final Key fakeTextFieldKey = UniqueKey();
         final Key outerKey = UniqueKey();
 
@@ -87,6 +88,7 @@ void main() {
             globalGesturePosition: fakeTextFieldRect.center,
           ),
         );
+        addTearDown(magnifier.dispose);
 
         await showCupertinoMagnifier(context, tester, magnifier);
 
@@ -98,7 +100,7 @@ void main() {
         );
       });
 
-      testWidgets('should never horizontally be outside of Screen Padding', (WidgetTester tester) async {
+      testWidgetsWithLeakTracking('should never horizontally be outside of Screen Padding', (WidgetTester tester) async {
         await tester.pumpWidget(
           const MaterialApp(
             color: Color.fromARGB(7, 0, 129, 90),
@@ -108,19 +110,21 @@ void main() {
 
         final BuildContext context = tester.firstElement(find.byType(Placeholder));
 
+        final ValueNotifier<MagnifierInfo> magnifierInfo = ValueNotifier<MagnifierInfo>(
+          MagnifierInfo(
+            currentLineBoundaries: reasonableTextField,
+            fieldBounds: reasonableTextField,
+            caretRect: reasonableTextField,
+            // The tap position is far out of the right side of the app.
+            globalGesturePosition:
+            Offset(MediaQuery.sizeOf(context).width + 100, 0),
+          ),
+        );
+        addTearDown(magnifierInfo.dispose);
         await showCupertinoMagnifier(
           context,
           tester,
-          ValueNotifier<MagnifierInfo>(
-            MagnifierInfo(
-              currentLineBoundaries: reasonableTextField,
-              fieldBounds: reasonableTextField,
-              caretRect: reasonableTextField,
-              // The tap position is far out of the right side of the app.
-              globalGesturePosition:
-                  Offset(MediaQuery.sizeOf(context).width + 100, 0),
-            ),
-          ),
+          magnifierInfo,
         );
 
         // Should be less than the right edge, since we have padding.
@@ -128,7 +132,7 @@ void main() {
             lessThan(MediaQuery.sizeOf(context).width));
       });
 
-      testWidgets('should have some vertical drag', (WidgetTester tester) async {
+      testWidgetsWithLeakTracking('should have some vertical drag', (WidgetTester tester) async {
         final double dragPositionBelowTextField = reasonableTextField.center.dy + 30;
 
         await tester.pumpWidget(
@@ -141,20 +145,23 @@ void main() {
         final BuildContext context =
             tester.firstElement(find.byType(Placeholder));
 
+        final ValueNotifier<MagnifierInfo> magnifierInfo =
+            ValueNotifier<MagnifierInfo>(
+          MagnifierInfo(
+            currentLineBoundaries: reasonableTextField,
+            fieldBounds: reasonableTextField,
+            caretRect: reasonableTextField,
+            // The tap position is dragBelow units below the text field.
+            globalGesturePosition: Offset(
+                MediaQuery.sizeOf(context).width / 2,
+                dragPositionBelowTextField),
+          ),
+        );
+        addTearDown(magnifierInfo.dispose);
         await showCupertinoMagnifier(
           context,
           tester,
-          ValueNotifier<MagnifierInfo>(
-            MagnifierInfo(
-              currentLineBoundaries: reasonableTextField,
-              fieldBounds: reasonableTextField,
-              caretRect: reasonableTextField,
-              // The tap position is dragBelow units below the text field.
-              globalGesturePosition: Offset(
-                  MediaQuery.sizeOf(context).width / 2,
-                  dragPositionBelowTextField),
-            ),
-          ),
+          magnifierInfo,
         );
 
         // The magnifier Y should be greater than the text field, since we "dragged" it down.
@@ -166,7 +173,7 @@ void main() {
     });
 
     group('status', () {
-      testWidgets('should hide if gesture is far below the text field', (WidgetTester tester) async {
+      testWidgetsWithLeakTracking('should hide if gesture is far below the text field', (WidgetTester tester) async {
         await tester.pumpWidget(
           const MaterialApp(
             color: Color.fromARGB(7, 0, 129, 90),
@@ -177,7 +184,7 @@ void main() {
         final BuildContext context =
             tester.firstElement(find.byType(Placeholder));
 
-        final ValueNotifier<MagnifierInfo> magnifierinfo =
+        final ValueNotifier<MagnifierInfo> magnifierInfo =
             ValueNotifier<MagnifierInfo>(
           MagnifierInfo(
             currentLineBoundaries: reasonableTextField,
@@ -188,16 +195,17 @@ void main() {
                 MediaQuery.sizeOf(context).width / 2, reasonableTextField.top),
           ),
         );
+        addTearDown(magnifierInfo.dispose);
 
         // Show the magnifier initially, so that we get it in a not hidden state.
-        await showCupertinoMagnifier(context, tester, magnifierinfo);
+        await showCupertinoMagnifier(context, tester, magnifierInfo);
 
         // Move the gesture to one that should hide it.
-        magnifierinfo.value = MagnifierInfo(
+        magnifierInfo.value = MagnifierInfo(
             currentLineBoundaries: reasonableTextField,
             fieldBounds: reasonableTextField,
             caretRect: reasonableTextField,
-            globalGesturePosition: magnifierinfo.value.globalGesturePosition + const Offset(0, 100),
+            globalGesturePosition: magnifierInfo.value.globalGesturePosition + const Offset(0, 100),
         );
         await tester.pumpAndSettle();
 
@@ -205,7 +213,7 @@ void main() {
         expect(magnifierController.overlayEntry, isNotNull);
       });
 
-      testWidgets('should re-show if gesture moves back up',
+      testWidgetsWithLeakTracking('should re-show if gesture moves back up',
           (WidgetTester tester) async {
         await tester.pumpWidget(
           const MaterialApp(
@@ -227,6 +235,7 @@ void main() {
             globalGesturePosition: Offset(MediaQuery.sizeOf(context).width / 2, reasonableTextField.top),
           ),
         );
+        addTearDown(magnifierInfo.dispose);
 
         // Show the magnifier initially, so that we get it in a not hidden state.
         await showCupertinoMagnifier(context, tester, magnifierInfo);
diff --git a/packages/flutter/test/cupertino/nav_bar_transition_test.dart b/packages/flutter/test/cupertino/nav_bar_transition_test.dart
index 662fcb5300..97205e3e1c 100644
--- a/packages/flutter/test/cupertino/nav_bar_transition_test.dart
+++ b/packages/flutter/test/cupertino/nav_bar_transition_test.dart
@@ -11,6 +11,7 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
 
 Future<void> startTransitionBetween(
   WidgetTester tester, {
@@ -131,7 +132,7 @@ void checkOpacity(WidgetTester tester, Finder finder, double opacity) {
 }
 
 void main() {
-  testWidgets('Bottom middle moves between middle and back label', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom middle moves between middle and back label', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');
 
     // Be mid-transition.
@@ -159,7 +160,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom middle moves between middle and back label RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom middle moves between middle and back label RTL', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -186,7 +187,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom middle never changes size during the animation', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom middle never changes size during the animation', (WidgetTester tester) async {
     await tester.binding.setSurfaceSize(const Size(1080.0 / 2.75, 600));
     addTearDown(() async {
       await tester.binding.setSurfaceSize(const Size(800.0, 600.0));
@@ -207,7 +208,7 @@ void main() {
     }
   });
 
-  testWidgets('Bottom middle and top back label transitions their font', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom middle and top back label transitions their font', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');
 
     // Be mid-transition.
@@ -251,7 +252,7 @@ void main() {
     checkOpacity(tester, flying(tester, find.text('Page 1')).last, 0.5292819738388062);
   });
 
-  testWidgets('Font transitions respect themes', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Font transitions respect themes', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -299,7 +300,7 @@ void main() {
     checkOpacity(tester, flying(tester, find.text('Page 1')).last, 0.5292819738388062);
   });
 
-  testWidgets('Fullscreen dialogs do not create heroes', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Fullscreen dialogs do not create heroes', (WidgetTester tester) async {
     await tester.pumpWidget(
       const CupertinoApp(
         home: Placeholder(),
@@ -333,7 +334,7 @@ void main() {
     expect(() => flying(tester, find.text('Page 2')), throwsAssertionError);
   });
 
-  testWidgets('Turning off transition works', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Turning off transition works', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoNavigationBar(
@@ -357,7 +358,7 @@ void main() {
     expect(() => flying(tester, find.text('Page 2')), throwsAssertionError);
   });
 
-  testWidgets('Popping mid-transition is symmetrical', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Popping mid-transition is symmetrical', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');
 
     // Be mid-transition.
@@ -405,7 +406,7 @@ void main() {
     checkColorAndPositionAt50ms();
   });
 
-  testWidgets('Popping mid-transition is symmetrical RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Popping mid-transition is symmetrical RTL', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -456,7 +457,7 @@ void main() {
     checkColorAndPositionAt50ms();
   });
 
-  testWidgets('There should be no global keys in the hero flight', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('There should be no global keys in the hero flight', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');
 
     // Be mid-transition.
@@ -471,7 +472,7 @@ void main() {
     );
   });
 
-  testWidgets('DartPerformanceMode is latency mid-animation', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('DartPerformanceMode is latency mid-animation', (WidgetTester tester) async {
     DartPerformanceMode? mode;
 
     // before the animation starts, no requests are active.
@@ -491,7 +492,7 @@ void main() {
     expect(mode, isNull);
   });
 
-  testWidgets('Multiple nav bars tags do not conflict if in different navigators', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Multiple nav bars tags do not conflict if in different navigators', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: CupertinoTabScaffold(
@@ -566,7 +567,7 @@ void main() {
     expect(find.text('Tab 1 Page 2', skipOffstage: false), findsNothing);
   });
 
-  testWidgets('Transition box grows to large title size', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Transition box grows to large title size', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -590,7 +591,7 @@ void main() {
     checkBackgroundBoxHeight(tester, 84.33018499612808);
   });
 
-  testWidgets('Large transition box shrinks to standard nav bar size', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Large transition box shrinks to standard nav bar size', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoSliverNavigationBar(),
@@ -614,7 +615,7 @@ void main() {
     checkBackgroundBoxHeight(tester, 55.66981500387192);
   });
 
-  testWidgets('Hero flight removed at the end of page transition', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Hero flight removed at the end of page transition', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');
 
     await tester.pump(const Duration(milliseconds: 50));
@@ -629,7 +630,7 @@ void main() {
     expect(() => flying(tester, find.text('Page 1')), throwsAssertionError);
   });
 
-  testWidgets('Exact widget is reused to build inside the transition', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Exact widget is reused to build inside the transition', (WidgetTester tester) async {
     const Widget userMiddle = Placeholder();
     await startTransitionBetween(
       tester,
@@ -645,7 +646,7 @@ void main() {
     expect(flying(tester, find.byWidget(userMiddle)), findsOneWidget);
   });
 
-  testWidgets('Middle is not shown if alwaysShowMiddle is false and the nav bar is expanded', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Middle is not shown if alwaysShowMiddle is false and the nav bar is expanded', (WidgetTester tester) async {
     const Widget userMiddle = Placeholder();
     await startTransitionBetween(
       tester,
@@ -662,9 +663,10 @@ void main() {
     expect(flying(tester, find.byWidget(userMiddle)), findsNothing);
   });
 
-  testWidgets('Middle is shown if alwaysShowMiddle is false but the nav bar is collapsed', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Middle is shown if alwaysShowMiddle is false but the nav bar is collapsed', (WidgetTester tester) async {
     const Widget userMiddle = Placeholder();
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
 
     await tester.pumpWidget(
       CupertinoApp(
@@ -710,7 +712,7 @@ void main() {
     expect(flying(tester, find.byWidget(userMiddle)), findsOneWidget);
   });
 
-  testWidgets('First appearance of back chevron fades in from the right', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('First appearance of back chevron fades in from the right', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         home: scaffoldForNavBar(null),
@@ -749,7 +751,7 @@ void main() {
     ));
   });
 
-  testWidgets('First appearance of back chevron fades in from the left in RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('First appearance of back chevron fades in from the left in RTL', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(
         builder: (BuildContext context, Widget? navigator) {
@@ -801,7 +803,7 @@ void main() {
     );
   });
 
-  testWidgets('Back chevron fades out and in when both pages have it', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Back chevron fades out and in when both pages have it', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1');
 
     await tester.pump(const Duration(milliseconds: 50));
@@ -827,7 +829,7 @@ void main() {
     expect(tester.getTopLeft(backChevrons.last), const Offset(14.0, 7.0));
   });
 
-  testWidgets('Bottom middle just fades if top page has a custom leading', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom middle just fades if top page has a custom leading', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -858,7 +860,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom leading fades in place', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom leading fades in place', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoSliverNavigationBar(leading: Text('custom')),
@@ -884,7 +886,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom trailing fades in place', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom trailing fades in place', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoSliverNavigationBar(trailing: Text('custom')),
@@ -916,7 +918,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom back label fades and slides to the left', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom back label fades and slides to the left', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -958,7 +960,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom back label fades and slides to the right in RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom back label fades and slides to the right in RTL', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -1002,7 +1004,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom large title moves to top back label', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom large title moves to top back label', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoSliverNavigationBar(),
@@ -1054,7 +1056,7 @@ void main() {
     );
   });
 
-  testWidgets('Long title turns into the word back mid transition', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Long title turns into the word back mid transition', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoSliverNavigationBar(),
@@ -1104,7 +1106,7 @@ void main() {
     );
   });
 
-  testWidgets('Bottom large title and top back label transitions their font', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Bottom large title and top back label transitions their font', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       from: const CupertinoSliverNavigationBar(),
@@ -1143,7 +1145,7 @@ void main() {
     expect(topBackLabel.text.style!.letterSpacing, moreOrLessEquals(-0.2259759941697121));
   });
 
-  testWidgets('Top middle fades in and slides in from the right', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Top middle fades in and slides in from the right', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       toTitle: 'Page 2',
@@ -1174,7 +1176,7 @@ void main() {
     );
   });
 
-  testWidgets('Top middle never changes size during the animation', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Top middle never changes size during the animation', (WidgetTester tester) async {
     await tester.binding.setSurfaceSize(const Size(1080.0 / 2.75, 600));
     addTearDown(() async {
       await tester.binding.setSurfaceSize(const Size(800.0, 600.0));
@@ -1198,7 +1200,7 @@ void main() {
     }
   });
 
-  testWidgets('Top middle fades in and slides in from the left in RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Top middle fades in and slides in from the left in RTL', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       toTitle: 'Page 2',
@@ -1230,7 +1232,7 @@ void main() {
     );
   });
 
-  testWidgets('Top large title fades in and slides in from the right', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Top large title fades in and slides in from the right', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       to: const CupertinoSliverNavigationBar(),
@@ -1256,7 +1258,7 @@ void main() {
     );
   });
 
-  testWidgets('Top large title fades in and slides in from the left in RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Top large title fades in and slides in from the left in RTL', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       to: const CupertinoSliverNavigationBar(),
@@ -1283,7 +1285,7 @@ void main() {
     );
   });
 
-  testWidgets('Components are not unnecessarily rebuilt during transitions', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Components are not unnecessarily rebuilt during transitions', (WidgetTester tester) async {
     int bottomBuildTimes = 0;
     int topBuildTimes = 0;
     await startTransitionBetween(
@@ -1328,7 +1330,7 @@ void main() {
     expect(topBuildTimes, 3);
   });
 
-  testWidgets('Back swipe gesture transitions', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Back swipe gesture transitions', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
@@ -1391,7 +1393,7 @@ void main() {
     expect(find.text('Page 1'), findsOneWidget);
   });
 
-  testWidgets('textScaleFactor is set to 1.0 on transition', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('textScaleFactor is set to 1.0 on transition', (WidgetTester tester) async {
     await startTransitionBetween(tester, fromTitle: 'Page 1', textScale: 99);
 
     await tester.pump(const Duration(milliseconds: 50));
@@ -1399,7 +1401,7 @@ void main() {
     expect(tester.firstWidget<RichText>(flying(tester, find.byType(RichText))).textScaleFactor, 1);
   });
 
-  testWidgets('Back swipe gesture cancels properly with transition', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Back swipe gesture cancels properly with transition', (WidgetTester tester) async {
     await startTransitionBetween(
       tester,
       fromTitle: 'Page 1',
diff --git a/packages/flutter/test/cupertino/radio_test.dart b/packages/flutter/test/cupertino/radio_test.dart
index 0a7d3460c3..da62e4c6ba 100644
--- a/packages/flutter/test/cupertino/radio_test.dart
+++ b/packages/flutter/test/cupertino/radio_test.dart
@@ -7,11 +7,12 @@ import 'package:flutter/foundation.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';
 
 void main() {
-  testWidgets('Radio control test', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Radio control test', (WidgetTester tester) async {
     final Key key = UniqueKey();
     final List<int?> log = <int?>[];
 
@@ -63,7 +64,7 @@ void main() {
     expect(log, isEmpty);
   });
 
-  testWidgets('Radio can be toggled when toggleable is set', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Radio can be toggled when toggleable is set', (WidgetTester tester) async {
     final Key key = UniqueKey();
     final List<int?> log = <int?>[];
 
@@ -118,7 +119,7 @@ void main() {
     expect(log, equals(<int>[1]));
   });
 
-  testWidgets('Radio selected semantics - platform adaptive', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Radio selected semantics - platform adaptive', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
 
     await tester.pumpWidget(CupertinoApp(
@@ -153,7 +154,7 @@ void main() {
     semantics.dispose();
   }, variant: TargetPlatformVariant.all());
 
-  testWidgets('Radio semantics', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Radio semantics', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
 
     await tester.pumpWidget(CupertinoApp(
@@ -241,7 +242,7 @@ void main() {
     semantics.dispose();
   });
 
-  testWidgets('has semantic events', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('has semantic events', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
     final Key key = UniqueKey();
     dynamic semanticEvent;
@@ -278,13 +279,14 @@ void main() {
     tester.binding.defaultBinaryMessenger.setMockDecodedMessageHandler<dynamic>(SystemChannels.accessibility, null);
   });
 
-  testWidgets('Radio can be controlled by keyboard shortcuts', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Radio can be controlled by keyboard shortcuts', (WidgetTester tester) async {
     tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
     int? groupValue = 1;
     const Key radioKey0 = Key('radio0');
     const Key radioKey1 = Key('radio1');
     const Key radioKey2 = Key('radio2');
     final FocusNode focusNode2 = FocusNode(debugLabel: 'radio2');
+    addTearDown(focusNode2.dispose);
     Widget buildApp({bool enabled = true}) {
       return CupertinoApp(
         home: Center(
@@ -350,7 +352,7 @@ void main() {
     expect(groupValue, equals(2));
   });
 
-  testWidgets('Show a checkmark when useCheckmarkStyle is true', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Show a checkmark when useCheckmarkStyle is true', (WidgetTester tester) async {
     await tester.pumpWidget(CupertinoApp(
       home: Center(
         child: CupertinoRadio<int>(
@@ -405,7 +407,7 @@ void main() {
     );
   });
 
-  testWidgets('Do not crash when widget disappears while pointer is down', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Do not crash when widget disappears while pointer is down', (WidgetTester tester) async {
     final Key key = UniqueKey();
 
     Widget buildRadio(bool show) {
diff --git a/packages/flutter/test/cupertino/scrollbar_test.dart b/packages/flutter/test/cupertino/scrollbar_test.dart
index e8a1277ef7..702a3ca8c8 100644
--- a/packages/flutter/test/cupertino/scrollbar_test.dart
+++ b/packages/flutter/test/cupertino/scrollbar_test.dart
@@ -8,6 +8,7 @@ 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';
 
 const CupertinoDynamicColor _kScrollbarColor = CupertinoDynamicColor.withBrightness(
   color: Color(0x59000000),
@@ -20,7 +21,7 @@ void main() {
   const Duration kScrollbarResizeDuration = Duration(milliseconds: 100);
   const Duration kLongPressDuration = Duration(milliseconds: 100);
 
-  testWidgets('Scrollbar never goes away until finger lift', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar never goes away until finger lift', (WidgetTester tester) async {
     await tester.pumpWidget(
       const Directionality(
         textDirection: TextDirection.ltr,
@@ -58,7 +59,7 @@ void main() {
     ));
   });
 
-  testWidgets('Scrollbar dark mode', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar dark mode', (WidgetTester tester) async {
     Brightness brightness = Brightness.light;
     late StateSetter setState;
     await tester.pumpWidget(
@@ -95,8 +96,9 @@ void main() {
     ));
   });
 
-  testWidgets('Scrollbar thumb can be dragged with long press', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar thumb can be dragged with long press', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -167,8 +169,9 @@ void main() {
     await tester.pump(kScrollbarFadeDuration);
   });
 
-  testWidgets('Scrollbar thumb can be dragged with long press - reverse', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar thumb can be dragged with long press - reverse', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -242,7 +245,7 @@ void main() {
     await tester.pump(kScrollbarFadeDuration);
   });
 
-  testWidgets('Scrollbar changes thickness and radius when dragged', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar changes thickness and radius when dragged', (WidgetTester tester) async {
     const double thickness = 20;
     const double thicknessWhileDragging = 40;
     const double radius = 10;
@@ -253,6 +256,7 @@ void main() {
     final Size screenSize = tester.view.physicalSize / tester.view.devicePixelRatio;
 
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -339,7 +343,7 @@ void main() {
     await tester.pump(kScrollbarFadeDuration);
   });
 
-  testWidgets('When thumbVisibility is true, must pass a controller or find PrimaryScrollController', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('When thumbVisibility is true, must pass a controller or find PrimaryScrollController', (WidgetTester tester) async {
       Widget viewWithScroll() {
         return const Directionality(
           textDirection: TextDirection.ltr,
@@ -364,8 +368,9 @@ void main() {
     },
   );
 
-  testWidgets('When thumbVisibility is true, must pass a controller or find PrimaryScrollController that is attached to a scroll view', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('When thumbVisibility is true, must pass a controller or find PrimaryScrollController that is attached to a scroll view', (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       Widget viewWithScroll() {
         return Directionality(
           textDirection: TextDirection.ltr,
@@ -398,7 +403,7 @@ void main() {
     },
   );
 
-  testWidgets('When thumbVisibility is true, must pass a controller or find PrimaryScrollController', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('When thumbVisibility is true, must pass a controller or find PrimaryScrollController', (WidgetTester tester) async {
       Widget viewWithScroll() {
         return const Directionality(
           textDirection: TextDirection.ltr,
@@ -423,8 +428,9 @@ void main() {
     },
   );
 
-  testWidgets('When thumbVisibility is true, must pass a controller or find PrimaryScrollController that is attached to a scroll view', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('When thumbVisibility is true, must pass a controller or find PrimaryScrollController that is attached to a scroll view', (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       Widget viewWithScroll() {
         return Directionality(
           textDirection: TextDirection.ltr,
@@ -457,8 +463,9 @@ void main() {
     },
   );
 
-  testWidgets('On first render with thumbVisibility: true, the thumb shows with PrimaryScrollController', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('On first render with thumbVisibility: true, the thumb shows with PrimaryScrollController', (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       Widget viewWithScroll() {
         return Directionality(
           textDirection: TextDirection.ltr,
@@ -491,8 +498,9 @@ void main() {
     },
   );
 
-  testWidgets('On first render with thumbVisibility: true, the thumb shows', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('On first render with thumbVisibility: true, the thumb shows', (WidgetTester tester) async {
     final ScrollController controller = ScrollController();
+    addTearDown(controller.dispose);
     Widget viewWithScroll() {
       return Directionality(
         textDirection: TextDirection.ltr,
@@ -524,8 +532,9 @@ void main() {
     expect(find.byType(CupertinoScrollbar), paints..rrect());
   });
 
-  testWidgets('On first render with thumbVisibility: true, the thumb shows with PrimaryScrollController', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('On first render with thumbVisibility: true, the thumb shows with PrimaryScrollController', (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       Widget viewWithScroll() {
         return Directionality(
           textDirection: TextDirection.ltr,
@@ -558,8 +567,9 @@ void main() {
     },
   );
 
-  testWidgets('On first render with thumbVisibility: true, the thumb shows', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('On first render with thumbVisibility: true, the thumb shows', (WidgetTester tester) async {
     final ScrollController controller = ScrollController();
+    addTearDown(controller.dispose);
     Widget viewWithScroll() {
       return Directionality(
         textDirection: TextDirection.ltr,
@@ -591,8 +601,9 @@ void main() {
     expect(find.byType(CupertinoScrollbar), paints..rrect());
   });
 
-  testWidgets('On first render with thumbVisibility: false, the thumb is hidden', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('On first render with thumbVisibility: false, the thumb is hidden', (WidgetTester tester) async {
     final ScrollController controller = ScrollController();
+    addTearDown(controller.dispose);
     Widget viewWithScroll() {
       return Directionality(
         textDirection: TextDirection.ltr,
@@ -619,8 +630,9 @@ void main() {
     expect(find.byType(CupertinoScrollbar), isNot(paints..rect()));
   });
 
-  testWidgets('With thumbVisibility: true, fling a scroll. While it is still scrolling, set thumbVisibility: false. The thumb should not fade out until the scrolling stops.', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('With thumbVisibility: true, fling a scroll. While it is still scrolling, set thumbVisibility: false. The thumb should not fade out until the scrolling stops.', (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       bool thumbVisibility = true;
       Widget viewWithScroll() {
         return StatefulBuilder(
@@ -676,10 +688,11 @@ void main() {
     },
   );
 
-  testWidgets(
+  testWidgetsWithLeakTracking(
     'With thumbVisibility: false, set thumbVisibility: true. The thumb should be always shown directly',
     (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       bool thumbVisibility = false;
       Widget viewWithScroll() {
         return StatefulBuilder(
@@ -730,11 +743,12 @@ void main() {
     },
   );
 
-  testWidgets(
+  testWidgetsWithLeakTracking(
     'With thumbVisibility: false, fling a scroll. While it is still scrolling, set thumbVisibility: true. '
     'The thumb should not fade even after the scrolling stops',
     (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       bool thumbVisibility = false;
       Widget viewWithScroll() {
         return StatefulBuilder(
@@ -797,11 +811,12 @@ void main() {
     },
   );
 
-  testWidgets(
+  testWidgetsWithLeakTracking(
     'Toggling thumbVisibility while not scrolling fades the thumb in/out. '
     'This works even when you have never scrolled at all yet',
     (WidgetTester tester) async {
       final ScrollController controller = ScrollController();
+      addTearDown(controller.dispose);
       bool thumbVisibility = true;
       Widget viewWithScroll() {
         return StatefulBuilder(
@@ -852,8 +867,9 @@ void main() {
     },
   );
 
-  testWidgets('Scrollbar thumb can be dragged with long press - horizontal axis', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar thumb can be dragged with long press - horizontal axis', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -926,8 +942,9 @@ void main() {
     await tester.pump(kScrollbarFadeDuration);
   });
 
-  testWidgets('Scrollbar thumb can be dragged with long press - horizontal axis, reverse', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Scrollbar thumb can be dragged with long press - horizontal axis, reverse', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -1001,8 +1018,9 @@ void main() {
     await tester.pump(kScrollbarFadeDuration);
   });
 
-  testWidgets('Tapping the track area pages the Scroll View', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Tapping the track area pages the Scroll View', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -1060,8 +1078,9 @@ void main() {
     );
   });
 
-  testWidgets('Throw if interactive with the bar when no position attached', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Throw if interactive with the bar when no position attached', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
 
     await tester.pumpWidget(
       Directionality(
@@ -1104,9 +1123,11 @@ void main() {
     FlutterError.onError = handler;
   });
 
-  testWidgets('Interactive scrollbars should have a valid scroll controller', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Interactive scrollbars should have a valid scroll controller', (WidgetTester tester) async {
     final ScrollController primaryScrollController = ScrollController();
+    addTearDown(primaryScrollController.dispose);
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
 
     await tester.pumpWidget(
       Directionality(
@@ -1145,9 +1166,10 @@ void main() {
     );
   });
 
-  testWidgets('Simultaneous dragging and pointer scrolling does not cause a crash', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Simultaneous dragging and pointer scrolling does not cause a crash', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/70105
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
     await tester.pumpWidget(
       CupertinoApp(
         home: PrimaryScrollController(
@@ -1256,8 +1278,9 @@ void main() {
     );
   });
 
-  testWidgets('CupertinoScrollbar scrollOrientation works correctly', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('CupertinoScrollbar scrollOrientation works correctly', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
 
     await tester.pumpWidget(
       CupertinoApp(
diff --git a/packages/flutter/test/cupertino/sliding_segmented_control_test.dart b/packages/flutter/test/cupertino/sliding_segmented_control_test.dart
index 08bc092057..3aece48a8a 100644
--- a/packages/flutter/test/cupertino/sliding_segmented_control_test.dart
+++ b/packages/flutter/test/cupertino/sliding_segmented_control_test.dart
@@ -9,6 +9,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.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 '../widgets/semantics_tester.dart';
 
@@ -93,7 +94,7 @@ void main() {
     groupValue = 0;
   });
 
-  testWidgets('Need at least 2 children', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Need at least 2 children', (WidgetTester tester) async {
     groupValue = null;
     await expectLater(
       () => tester.pumpWidget(
@@ -146,7 +147,7 @@ void main() {
     );
   });
 
-  testWidgets('Padding works', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Padding works', (WidgetTester tester) async {
     const Key key = Key('Container');
 
     const Map<int, Widget> children = <int, Widget>{
@@ -223,7 +224,7 @@ void main() {
     await verifyPadding(padding: const EdgeInsets.fromLTRB(1, 3, 5, 7));
   });
 
-  testWidgets('Tap changes toggle state', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Tap changes toggle state', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Text('Child 2'),
@@ -255,7 +256,7 @@ void main() {
     expect(groupValue, 1);
   });
 
-  testWidgets(
+  testWidgetsWithLeakTracking(
     'Segmented controls respect theme',
     (WidgetTester tester) async {
       const Map<int, Widget> children = <int, Widget>{
@@ -293,7 +294,7 @@ void main() {
     },
   );
 
-  testWidgets('SegmentedControl dark mode', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('SegmentedControl dark mode', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Icon(IconData(1)),
@@ -345,7 +346,7 @@ void main() {
     expect(decorationDark.color!.value, CupertinoColors.systemRed.darkColor.value);
   });
 
-  testWidgets(
+  testWidgetsWithLeakTracking(
     'Children can be non-Text or Icon widgets (in this case, '
         'a Container or Placeholder widget)',
     (WidgetTester tester) async {
@@ -369,13 +370,13 @@ void main() {
     },
   );
 
-  testWidgets('Passed in value is child initially selected', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Passed in value is child initially selected', (WidgetTester tester) async {
     await tester.pumpWidget(setupSimpleSegmentedControl());
 
     expect(getHighlightedIndex(tester), 0);
   });
 
-  testWidgets('Null input for value results in no child initially selected', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Null input for value results in no child initially selected', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Text('Child 2'),
@@ -401,7 +402,7 @@ void main() {
     expect(getHighlightedIndex(tester), null);
   });
 
-  testWidgets('Long press not-selected child interactions', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Long press not-selected child interactions', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Text('Child 2'),
@@ -465,7 +466,7 @@ void main() {
     expect(getChildOpacityByName('Child 2'), 0.2);
   });
 
-  testWidgets('Long press does not change the opacity of currently-selected child', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Long press does not change the opacity of currently-selected child', (WidgetTester tester) async {
     double getChildOpacityByName(String childName) {
       return tester.renderObject<RenderAnimatedOpacity>(
         find.ancestor(matching: find.byType(AnimatedOpacity), of: find.text(childName)),
@@ -482,7 +483,7 @@ void main() {
     expect(getChildOpacityByName('Child 1'), 1);
   });
 
-  testWidgets('Height of segmented control is determined by tallest widget', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Height of segmented control is determined by tallest widget', (WidgetTester tester) async {
     final Map<int, Widget> children = <int, Widget>{
       0: Container(constraints: const BoxConstraints.tightFor(height: 100.0)),
       1: Container(constraints: const BoxConstraints.tightFor(height: 400.0)),
@@ -512,7 +513,7 @@ void main() {
     );
   });
 
-  testWidgets('Width of each segmented control segment is determined by widest widget', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Width of each segmented control segment is determined by widest widget', (WidgetTester tester) async {
     final Map<int, Widget> children = <int, Widget>{
       0: Container(constraints: const BoxConstraints.tightFor(width: 50.0)),
       1: Container(constraints: const BoxConstraints.tightFor(width: 100.0)),
@@ -543,7 +544,7 @@ void main() {
     expect(childWidth, 200.0 + 9.25 * 2);
   });
 
-  testWidgets('Width is finite in unbounded space', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Width is finite in unbounded space', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: SizedBox(width: 50),
       1: SizedBox(width: 70),
@@ -576,7 +577,7 @@ void main() {
     );
   });
 
-  testWidgets('Directionality test - RTL should reverse order of widgets', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Directionality test - RTL should reverse order of widgets', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Text('Child 2'),
@@ -603,7 +604,7 @@ void main() {
     expect(tester.getTopRight(find.text('Child 1')).dx > tester.getTopRight(find.text('Child 2')).dx, isTrue);
   });
 
-  testWidgets('Correct initial selection and toggling behavior - RTL', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Correct initial selection and toggling behavior - RTL', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Text('Child 2'),
@@ -640,7 +641,7 @@ void main() {
     expect(getHighlightedIndex(tester), 0);
   });
 
-  testWidgets('Segmented control semantics', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Segmented control semantics', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
@@ -733,7 +734,7 @@ void main() {
     semantics.dispose();
   });
 
-  testWidgets('Non-centered taps work on smaller widgets', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Non-centered taps work on smaller widgets', (WidgetTester tester) async {
     final Map<int, Widget> children = <int, Widget>{};
     children[0] = const Text('Child 1');
     children[1] = const SizedBox();
@@ -761,7 +762,7 @@ void main() {
     expect(groupValue, 1);
   });
 
-  testWidgets('Hit-tests report accurate local position in segments', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Hit-tests report accurate local position in segments', (WidgetTester tester) async {
     final Map<int, Widget> children = <int, Widget>{};
     late TapDownDetails tapDownDetails;
     children[0] = GestureDetector(
@@ -793,7 +794,7 @@ void main() {
     expect(tapDownDetails.globalPosition, segment0GlobalOffset + const Offset(7, 11));
   });
 
-  testWidgets('Thumb animation is correct when the selected segment changes', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Thumb animation is correct when the selected segment changes', (WidgetTester tester) async {
     await tester.pumpWidget(setupSimpleSegmentedControl());
 
     final Rect initialRect = currentUnscaledThumbRect(tester, useGlobalCoordinate: true);
@@ -874,7 +875,7 @@ void main() {
     expect(currentThumbScale(tester), moreOrLessEquals(1, epsilon: 0.01));
   });
 
-  testWidgets(
+  testWidgetsWithLeakTracking(
     'Thumb does not go out of bounds in animation',
     (WidgetTester tester) async {
       const Map<int, Widget> children = <int, Widget>{
@@ -931,7 +932,7 @@ void main() {
     },
   );
 
-  testWidgets('Transition is triggered while a transition is already occurring', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Transition is triggered while a transition is already occurring', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
       1: Text('B'),
@@ -981,7 +982,7 @@ void main() {
     );
   });
 
-  testWidgets('Insert segment while animation is running', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Insert segment while animation is running', (WidgetTester tester) async {
     final Map<int, Widget> children = SplayTreeMap<int, Widget>((int a, int b) => a - b);
 
     children[0] = const Text('A');
@@ -1027,7 +1028,7 @@ void main() {
     );
   });
 
-  testWidgets('change selection programmatically when dragging', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('change selection programmatically when dragging', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
       1: Text('B'),
@@ -1086,7 +1087,7 @@ void main() {
     expect(callbackCalled, isFalse);
   });
 
-  testWidgets('Disallow new gesture when dragging', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Disallow new gesture when dragging', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
       1: Text('B'),
@@ -1141,7 +1142,7 @@ void main() {
     expect(callbackCalled, isFalse);
   });
 
-  testWidgets('gesture outlives the widget', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('gesture outlives the widget', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/63338.
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
@@ -1179,7 +1180,7 @@ void main() {
     expect(tester.takeException(), isNull);
   });
 
-  testWidgets('computeDryLayout is pure', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('computeDryLayout is pure', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/73362.
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
@@ -1213,7 +1214,7 @@ void main() {
     expect(tester.takeException(), isNull);
   });
 
-  testWidgets('Has consistent size, independent of groupValue', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Has consistent size, independent of groupValue', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/62063.
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
@@ -1247,12 +1248,13 @@ void main() {
     }
   });
 
-  testWidgets('ScrollView + SlidingSegmentedControl interaction', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('ScrollView + SlidingSegmentedControl interaction', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('Child 1'),
       1: Text('Child 2'),
     };
     final ScrollController scrollController = ScrollController();
+    addTearDown(scrollController.dispose);
 
     await tester.pumpWidget(
       Directionality(
@@ -1333,7 +1335,7 @@ void main() {
     expect(groupValue, 1);
   });
 
-  testWidgets('Hovering over Cupertino sliding segmented control updates cursor to clickable on Web', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Hovering over Cupertino sliding segmented control updates cursor to clickable on Web', (WidgetTester tester) async {
     const Map<int, Widget> children = <int, Widget>{
       0: Text('A'),
       1: Text('BB'),
diff --git a/packages/flutter/test/cupertino/spell_check_suggestions_toolbar_test.dart b/packages/flutter/test/cupertino/spell_check_suggestions_toolbar_test.dart
index dec2165a6c..fa88e2859d 100644
--- a/packages/flutter/test/cupertino/spell_check_suggestions_toolbar_test.dart
+++ b/packages/flutter/test/cupertino/spell_check_suggestions_toolbar_test.dart
@@ -7,11 +7,12 @@ 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';
 
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
-  testWidgets('more than three suggestions throws an error', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('more than three suggestions throws an error', (WidgetTester tester) async {
     Future<void> pumpToolbar(List<String> suggestions) async {
       await tester.pumpWidget(
         CupertinoApp(
@@ -61,10 +62,14 @@ void main() {
     expect(labels, isNot(contains('yeller')));
   });
 
-  testWidgets('buildButtonItems builds a disabled "No Replacements Found" button when no suggestions', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('buildButtonItems builds a disabled "No Replacements Found" button when no suggestions', (WidgetTester tester) async {
+    final TextEditingController controller = TextEditingController();
+    addTearDown(controller.dispose);
+    final FocusNode focusNode = FocusNode();
+    addTearDown(focusNode.dispose);
     await tester.pumpWidget(
       CupertinoApp(
-        home: _FakeEditableText(),
+        home: _FakeEditableText(focusNode, controller),
       ),
     );
     final _FakeEditableTextState editableTextState =
@@ -80,9 +85,11 @@ void main() {
 }
 
 class _FakeEditableText extends EditableText {
-  _FakeEditableText() : super(
-    controller: TextEditingController(),
-    focusNode: FocusNode(),
+  /// The parameters focusNode and controller are needed here so the can be
+  /// safely disposed after the test is completed.
+  _FakeEditableText(FocusNode focusNode, TextEditingController controller) : super(
+    controller: controller,
+    focusNode: focusNode,
     backgroundCursorColor: CupertinoColors.white,
     cursorColor: CupertinoColors.white,
     style: const TextStyle(),
diff --git a/packages/flutter/test/cupertino/switch_test.dart b/packages/flutter/test/cupertino/switch_test.dart
index e6b484bda2..cf4962c037 100644
--- a/packages/flutter/test/cupertino/switch_test.dart
+++ b/packages/flutter/test/cupertino/switch_test.dart
@@ -14,9 +14,10 @@ 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';
 
 void main() {
-  testWidgets('Switch can toggle on tap', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch can toggle on tap', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -46,7 +47,7 @@ void main() {
     expect(value, isTrue);
   });
 
-  testWidgets('CupertinoSwitch can be toggled by keyboard shortcuts', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('CupertinoSwitch can be toggled by keyboard shortcuts', (WidgetTester tester) async {
     bool value = true;
     Widget buildApp({bool enabled = true}) {
       return CupertinoApp(
@@ -79,7 +80,7 @@ void main() {
     expect(value, isTrue);
   });
 
-  testWidgets('Switch emits light haptic vibration on tap', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch emits light haptic vibration on tap', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
 
@@ -119,7 +120,7 @@ void main() {
     expect(log.single, isMethodCall('HapticFeedback.vibrate', arguments: 'HapticFeedbackType.lightImpact'));
   }, variant: TargetPlatformVariant.only(TargetPlatform.iOS));
 
-  testWidgets('Using other widgets that rebuild the switch will not cause vibrations', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Using other widgets that rebuild the switch will not cause vibrations', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     final Key switchKey2 = UniqueKey();
     bool value = false;
@@ -190,7 +191,7 @@ void main() {
     expect(log[3], isMethodCall('HapticFeedback.vibrate', arguments: 'HapticFeedbackType.lightImpact'));
   }, variant: TargetPlatformVariant.only(TargetPlatform.iOS));
 
-  testWidgets('Haptic vibration triggers on drag', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Haptic vibration triggers on drag', (WidgetTester tester) async {
     bool value = false;
     final List<MethodCall> log = <MethodCall>[];
 
@@ -228,7 +229,7 @@ void main() {
     expect(log[0], isMethodCall('HapticFeedback.vibrate', arguments: 'HapticFeedbackType.lightImpact'));
   }, variant: TargetPlatformVariant.only(TargetPlatform.iOS));
 
-  testWidgets('No haptic vibration triggers from a programmatic value change', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('No haptic vibration triggers from a programmatic value change', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
 
@@ -280,7 +281,7 @@ void main() {
     expect(log, hasLength(0));
   }, variant: TargetPlatformVariant.only(TargetPlatform.iOS));
 
-  testWidgets('Switch can drag (LTR)', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch can drag (LTR)', (WidgetTester tester) async {
     bool value = false;
 
     await tester.pumpWidget(
@@ -324,7 +325,7 @@ void main() {
     expect(value, isFalse);
   });
 
-  testWidgets('Switch can drag with dragStartBehavior', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch can drag with dragStartBehavior', (WidgetTester tester) async {
     bool value = false;
 
     await tester.pumpWidget(
@@ -410,7 +411,7 @@ void main() {
     await tester.pump();
   });
 
-  testWidgets('Switch can drag (RTL)', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch can drag (RTL)', (WidgetTester tester) async {
     bool value = false;
 
     await tester.pumpWidget(
@@ -455,7 +456,7 @@ void main() {
     expect(value, isFalse);
   });
 
-  testWidgets('can veto switch dragging result', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('can veto switch dragging result', (WidgetTester tester) async {
     bool value = false;
 
     await tester.pumpWidget(
@@ -527,7 +528,7 @@ void main() {
     expect(position.value, 1.0);
   });
 
-  testWidgets('Switch is translucent when disabled', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch is translucent when disabled', (WidgetTester tester) async {
     await tester.pumpWidget(
       const Directionality(
         textDirection: TextDirection.ltr,
@@ -545,7 +546,7 @@ void main() {
     expect(tester.widget<Opacity>(find.byType(Opacity).first).opacity, 0.5);
   });
 
-  testWidgets('Switch is using track color when set', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch is using track color when set', (WidgetTester tester) async {
     const Color trackColor = Color(0xFF00FF00);
 
     await tester.pumpWidget(
@@ -567,7 +568,7 @@ void main() {
     expect(find.byType(CupertinoSwitch), paints..rrect(color: trackColor));
   });
 
-  testWidgets('Switch is using default thumb color', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch is using default thumb color', (WidgetTester tester) async {
     await tester.pumpWidget(
       const Directionality(
         textDirection: TextDirection.ltr,
@@ -593,7 +594,7 @@ void main() {
     );
   });
 
-  testWidgets('Switch is using thumb color when set', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch is using thumb color when set', (WidgetTester tester) async {
     const Color thumbColor = Color(0xFF000000);
     await tester.pumpWidget(
       const Directionality(
@@ -621,7 +622,7 @@ void main() {
     );
   });
 
-  testWidgets('Switch is opaque when enabled', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch is opaque when enabled', (WidgetTester tester) async {
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -639,7 +640,7 @@ void main() {
     expect(tester.widget<Opacity>(find.byType(Opacity).first).opacity, 1.0);
   });
 
-  testWidgets('Switch turns translucent after becoming disabled', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch turns translucent after becoming disabled', (WidgetTester tester) async {
     await tester.pumpWidget(
       Directionality(
         textDirection: TextDirection.ltr,
@@ -670,7 +671,7 @@ void main() {
     expect(tester.widget<Opacity>(find.byType(Opacity).first).opacity, 0.5);
   });
 
-  testWidgets('Switch turns opaque after becoming enabled', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch turns opaque after becoming enabled', (WidgetTester tester) async {
     await tester.pumpWidget(
       const Directionality(
         textDirection: TextDirection.ltr,
@@ -701,7 +702,7 @@ void main() {
     expect(tester.widget<Opacity>(find.byType(Opacity).first).opacity, 1.0);
   });
 
-  testWidgets('Switch renders correctly before, during, and after being tapped', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch renders correctly before, during, and after being tapped', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -779,7 +780,7 @@ void main() {
           style: PaintingStyle.stroke,
         );
 
-  testWidgets('Switch renders switch labels correctly before, during, and after being tapped', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch renders switch labels correctly before, during, and after being tapped', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -829,7 +830,7 @@ void main() {
     expect(switchRenderObject, offLabelPaintPattern(alpha: 0));
   });
 
-  testWidgets('Switch renders switch labels correctly before, during, and after being tapped in high contrast', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch renders switch labels correctly before, during, and after being tapped in high contrast', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -882,7 +883,7 @@ void main() {
     expect(switchRenderObject, offLabelPaintPattern(highContrast: true, alpha: 0));
   });
 
-  testWidgets('Switch renders switch labels correctly before, during, and after being tapped with direction rtl', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch renders switch labels correctly before, during, and after being tapped with direction rtl', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -932,7 +933,7 @@ void main() {
     expect(switchRenderObject, offLabelPaintPattern(isRtl: true, alpha: 0));
   });
 
-  testWidgets('Switch renders correctly in dark mode', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch renders correctly in dark mode', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -977,7 +978,7 @@ void main() {
     );
   });
 
-  testWidgets('Switch can apply the ambient theme and be opted out', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Switch can apply the ambient theme and be opted out', (WidgetTester tester) async {
     final Key switchKey = UniqueKey();
     bool value = false;
     await tester.pumpWidget(
@@ -1037,7 +1038,7 @@ void main() {
     );
   });
 
-  testWidgets('Hovering over Cupertino switch updates cursor to clickable on Web', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('Hovering over Cupertino switch updates cursor to clickable on Web', (WidgetTester tester) async {
     const bool value = false;
     // Disabled CupertinoSwitch does not update cursor on Web.
     await tester.pumpWidget(
@@ -1093,8 +1094,9 @@ void main() {
     );
   });
 
-  testWidgets('CupertinoSwitch is focusable and has correct focus color', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('CupertinoSwitch is focusable and has correct focus color', (WidgetTester tester) async {
     final FocusNode focusNode = FocusNode(debugLabel: 'CupertinoSwitch');
+    addTearDown(focusNode.dispose);
     tester.binding.focusManager.highlightStrategy = FocusHighlightStrategy.alwaysTraditional;
     bool value = true;
     const Color focusColor = Color(0xffff0000);
@@ -1174,8 +1176,9 @@ void main() {
     );
   });
 
-  testWidgets('CupertinoSwitch.onFocusChange callback', (WidgetTester tester) async {
+  testWidgetsWithLeakTracking('CupertinoSwitch.onFocusChange callback', (WidgetTester tester) async {
     final FocusNode focusNode = FocusNode(debugLabel: 'CupertinoSwitch');
+    addTearDown(focusNode.dispose);
     bool focused = false;
     await tester.pumpWidget(
       Directionality(