add trailing commas in flutter/test/animation (#80852)

packages/flutter/test/animation/animation_controller_test.dart

@@ -385,7 +385,7 @@ void main() {
         '   A given AnimationController cannot be disposed more than once.\n'
         '   The following AnimationController object was disposed multiple\n'
         '   times:\n'
-        '     AnimationController#00000(⏮ 0.000; paused; DISPOSED)\n'
+        '     AnimationController#00000(⏮ 0.000; paused; DISPOSED)\n',
       ),
     );
     final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
@@ -966,41 +966,44 @@ void main() {
       expect(
         error.toStringDeep(),
         'FlutterError\n'
-          '   AnimationController.forward() called with no default duration.\n'
-          '   The "duration" property should be set, either in the constructor\n'
-          '   or later, before calling the forward() function.\n'
+        '   AnimationController.forward() called with no default duration.\n'
+        '   The "duration" property should be set, either in the constructor\n'
+        '   or later, before calling the forward() function.\n',
       );
 
       controller.dispose();
     });
 
-    test('AnimationController animateTo() will throw an error if there is no explicit duration '
-      'and default duration', () {
-      final AnimationController controller = AnimationController(
-        vsync: const TestVSync(),
-      );
-
-      late FlutterError error;
-      try {
-        controller.animateTo(0.8);
-      } on FlutterError catch (e) {
-        error = e;
-      }
-
-      expect(error, isNotNull);
-      expect(
-        error.toStringDeep(),
-        'FlutterError\n'
+    test(
+      'AnimationController animateTo() will throw an error if there is no explicit duration '
+      'and default duration',
+      () {
+        final AnimationController controller = AnimationController(
+          vsync: const TestVSync(),
+        );
+
+        late FlutterError error;
+        try {
+          controller.animateTo(0.8);
+        } on FlutterError catch (e) {
+          error = e;
+        }
+
+        expect(error, isNotNull);
+        expect(
+          error.toStringDeep(),
+          'FlutterError\n'
           '   AnimationController.animateTo() called with no explicit duration\n'
           '   and no default duration.\n'
           '   Either the "duration" argument to the animateTo() method should\n'
           '   be provided, or the "duration" property should be set, either in\n'
           '   the constructor or later, before calling the animateTo()\n'
-          '   function.\n'
-      );
+          '   function.\n',
+        );
 
-      controller.dispose();
-    });
+        controller.dispose();
+      },
+    );
 
     test('AnimationController reverse() will throw an error if there is no default duration or reverseDuration', () {
       final AnimationController controller = AnimationController(
@@ -1018,43 +1021,46 @@ void main() {
       expect(
         error.toStringDeep(),
         'FlutterError\n'
-          '   AnimationController.reverse() called with no default duration or\n'
-          '   reverseDuration.\n'
-          '   The "duration" or "reverseDuration" property should be set,\n'
-          '   either in the constructor or later, before calling the reverse()\n'
-          '   function.\n'
+        '   AnimationController.reverse() called with no default duration or\n'
+        '   reverseDuration.\n'
+        '   The "duration" or "reverseDuration" property should be set,\n'
+        '   either in the constructor or later, before calling the reverse()\n'
+        '   function.\n',
       );
 
       controller.dispose();
     });
 
-    test('AnimationController animateBack() will throw an error if there is no explicit duration and '
-      'no default duration or reverseDuration', () {
-      final AnimationController controller = AnimationController(
-        vsync: const TestVSync(),
-      );
-
-      late FlutterError error;
-      try {
-        controller.animateBack(0.8);
-      } on FlutterError catch (e) {
-        error = e;
-      }
-
-      expect(error, isNotNull);
-      expect(
-        error.toStringDeep(),
-        'FlutterError\n'
+    test(
+      'AnimationController animateBack() will throw an error if there is no explicit duration and '
+      'no default duration or reverseDuration',
+      () {
+        final AnimationController controller = AnimationController(
+          vsync: const TestVSync(),
+        );
+
+        late FlutterError error;
+        try {
+          controller.animateBack(0.8);
+        } on FlutterError catch (e) {
+          error = e;
+        }
+
+        expect(error, isNotNull);
+        expect(
+          error.toStringDeep(),
+          'FlutterError\n'
           '   AnimationController.animateBack() called with no explicit\n'
           '   duration and no default duration or reverseDuration.\n'
           '   Either the "duration" argument to the animateBack() method should\n'
           '   be provided, or the "duration" or "reverseDuration" property\n'
           '   should be set, either in the constructor or later, before calling\n'
-          '   the animateBack() function.\n'
-      );
+          '   the animateBack() function.\n',
+        );
 
-      controller.dispose();
-    });
+        controller.dispose();
+      },
+    );
   });
 
 }

packages/flutter/test/animation/animations_test.dart

@@ -243,19 +243,18 @@ void main() {
       error = e;
     }
     expect(error, isNotNull);
-    expect(error!.toStringDeep(), matches(
+    expect(
+      error!.toStringDeep(),
       // RegExp matcher is required here due to flutter web and flutter mobile generating
       // slightly different floating point numbers
       // in Flutter web 0.0 sometimes just appears as 0. or 0
-      RegExp(r'''
+      matches(RegExp(r'''
 FlutterError
    Invalid curve endpoint at \d+(\.\d*)?\.
    Curves must map 0\.0 to near zero and 1\.0 to near one but
    BogusCurve mapped \d+(\.\d*)? to \d+(\.\d*)?, which is near \d+(\.\d*)?\.
-''',
-        multiLine: true
-      ),
-    ));
+''', multiLine: true)),
+    );
   });
 
   test('CurvedAnimation running with different forward and reverse durations.', () {

packages/flutter/test/animation/curves_test.dart

@@ -398,14 +398,15 @@ void main() {
 
     // Monotonically increasing in X.
     expect(
-        CatmullRomCurve.validateControlPoints(
-          const <Offset>[
-            Offset(0.2, 0.25),
-            Offset(0.01, 0.25),
-          ],
-          tension: 0.0,
-        ),
-        isFalse);
+      CatmullRomCurve.validateControlPoints(
+        const <Offset>[
+          Offset(0.2, 0.25),
+          Offset(0.01, 0.25),
+        ],
+        tension: 0.0,
+      ),
+      isFalse,
+    );
     expect(() {
       CatmullRomCurve(
         const <Offset>[
@@ -418,14 +419,15 @@ void main() {
 
     // X within range (0.0, 1.0).
     expect(
-        CatmullRomCurve.validateControlPoints(
-          const <Offset>[
-            Offset(0.2, 0.25),
-            Offset(1.01, 0.25),
-          ],
-          tension: 0.0,
-        ),
-        isFalse);
+      CatmullRomCurve.validateControlPoints(
+        const <Offset>[
+          Offset(0.2, 0.25),
+          Offset(1.01, 0.25),
+        ],
+        tension: 0.0,
+      ),
+      isFalse,
+    );
     expect(() {
       CatmullRomCurve(
         const <Offset>[

packages/flutter/test/animation/tween_test.dart

@@ -28,7 +28,7 @@ void main() {
     expect(error.diagnostics.map((DiagnosticsNode node) => node.toString()), <String>[
       'Cannot lerp between "Instance of \'Object\'" and "Instance of \'Object\'".',
       'The type Object might not fully implement `+`, `-`, and/or `*`. $kApiDocsLink',
-      'There may be a dedicated "ObjectTween" for this type, or you may need to create one.'
+      'There may be a dedicated "ObjectTween" for this type, or you may need to create one.',
     ]);
   });
 
@@ -59,7 +59,7 @@ void main() {
   test('throws flutter error when tweening types that do not fully satisfy tween requirements - Rect', () {
     final Tween<Rect> rectTween = Tween<Rect>(
       begin: const Rect.fromLTWH(0, 0, 10, 10),
-      end: const Rect.fromLTWH(2, 2, 2, 2)
+      end: const Rect.fromLTWH(2, 2, 2, 2),
     );
 
     FlutterError? error;
@@ -185,9 +185,7 @@ void main() {
     expect(rotationTween.lerp(0.0), equals(a));
     expect(rotationTween.lerp(1.0), equals(c));
     expect(
-      rotationTween.lerp(0.5).absoluteError(
-        a.clone()..rotateZ(0.5)
-      ),
+      rotationTween.lerp(0.5).absoluteError(a.clone()..rotateZ(0.5)),
       moreOrLessEquals(0.0),
     );
   }, skip: isWindows); // floating point math not quite deterministic on Windows?
@@ -210,7 +208,7 @@ void main() {
   test('ColorTween', () {
     final ColorTween tween = ColorTween(
       begin: const Color(0xff000000),
-      end: const Color(0xffffffff)
+      end: const Color(0xffffffff),
     );
     expect(tween.lerp(0.0), const Color(0xff000000));
     expect(tween.lerp(0.5), const Color(0xff7f7f7f));