anchor.diff:                  builder: (BuildContext context) {
                     unpadded = MediaQuery.of(context);
                     return Container();
  -                }
  +                },
                 ),
               );
             },
           ),
  -      )
  +      ),
       );
   
       expect(unpadded.size, size);
  
positive.code:       boldText: true,
        platformBrightness: Brightness.dark,
      );
      expect(copied.size, const Size(3.14, 2.72));
      expect(copied.devicePixelRatio, 1.41);
      expect(copied.textScaleFactor, 1.62);
      expect(copied.padding, const EdgeInsets.all(9.10938));
      expect(copied.viewPadding, const EdgeInsets.all(11.24031));
      expect(copied.viewInsets, const EdgeInsets.all(1.67262));
      expect(copied.systemGestureInsets, const EdgeInsets.all(1.5556));
      expect(copied.physicalDepth, 120.0);
      expect(copied.alwaysUse24HourFormat, true);
      expect(copied.accessibleNavigation, true);
      expect(copied.invertColors, true);
  
negative.code:   });
  
    testWidgets('MediaQuery.copyWith copies specified values', (WidgetTester tester) async {
      // Random and unique double values are used to ensure that the correct
      // values are copied over exactly
      const Size customSize = Size(3.14, 2.72);
      const double customDevicePixelRatio = 1.41;
      const double customTextScaleFactor = 1.62;
      const EdgeInsets customPadding = EdgeInsets.all(9.10938);
      const EdgeInsets customViewPadding = EdgeInsets.all(11.24031);
      const EdgeInsets customViewInsets = EdgeInsets.all(1.67262);
      const EdgeInsets customSystemGestureInsets = EdgeInsets.all(1.5556);
      const double customPhysicalDepth = 120.0;
  
      final MediaQueryData data = MediaQueryData.fromWindow(WidgetsBinding.instance.window);
      final MediaQueryData copied = data.copyWith(
        size: customSize,
        devicePixelRatio: customDevicePixelRatio,
        textScaleFactor: customTextScaleFactor,
        padding: customPadding,
        viewPadding: customViewPadding,
        viewInsets: customViewInsets,
        systemGestureInsets: customSystemGestureInsets,
        physicalDepth: customPhysicalDepth,
        alwaysUse24HourFormat: true,
        accessibleNavigation: true,
        invertColors: true,
  