anchor.diff:  
       final BottomAppBar bottomAppBar = tester.widget(find.byType(BottomAppBar));
       expect(bottomAppBar.padding, customPadding);
  -    final  Rect babRect = tester.getRect(find.byType(BottomAppBar));
  -    final  Rect childRect = tester.getRect(find.byType(ColoredBox));
  +    final Rect babRect = tester.getRect(find.byType(BottomAppBar));
  +    final Rect childRect = tester.getRect(find.byType(ColoredBox));
       expect(childRect, const Rect.fromLTRB(250, 530, 550, 590));
       expect(babRect, const Rect.fromLTRB(240, 520, 560, 600));
     });
   
     testWidgets('Custom Padding in Material 3', (WidgetTester tester) async {
  -  const EdgeInsets customPadding = EdgeInsets.all(10);
  +    const EdgeInsets customPadding = EdgeInsets.all(10);
       await tester.pumpWidget(
         MaterialApp(
           theme: ThemeData.from(colorScheme: const ColorScheme.light(), useMaterial3: true),
  
positive.code: 
      final BottomAppBar bottomAppBar = tester.widget(find.byType(BottomAppBar));
      expect(bottomAppBar.padding, customPadding);
      final  Rect babRect = tester.getRect(find.byType(BottomAppBar));
      final  Rect childRect = tester.getRect(find.byType(ColoredBox));
      expect(childRect, const Rect.fromLTRB(250, 530, 550, 590));
      expect(babRect, const Rect.fromLTRB(240, 520, 560, 600));
    });
  
negative.code:                 alignment: Alignment.bottomCenter,
                  child: BottomAppBar(
                    padding: customPadding,
                    child: ColoredBox(
                      color: Colors.green,
                      child: SizedBox(width: 300, height: 60),
                    ),
                  ),
                ),
              );
  