benchmark/case/flutter_scrollbar_test.unit

// This test is from a particularly slow to format part of:
//
// flutter/packages/test/material/scrollbar_test.dart.
void main() {
  testWidgets("Scrollbar doesn't show when scroll the inner scrollable widget", (WidgetTester tester) async {
    await tester.pumpWidget(
      Directionality(textDirection: TextDirection.ltr,
        child: MediaQuery(
          data: const MediaQueryData(),
          child: ScrollConfiguration(
            behavior: const NoScrollbarBehavior(),
            child: Scrollbar(
              key: key2,
              child: SingleChildScrollView(
                key: outerKey,
                child: SizedBox(
                  height: 1000.0,
                  width: double.infinity,
                  child: Column(
                    children: <Widget>[
                      Scrollbar(
                        key: key1,
                        child: SizedBox(
                          height: 300.0,
                          width: double.infinity,
                          child: SingleChildScrollView(
                            key: innerKey,
                            child: const SizedBox(
                              key: Key('Inner scrollable'),
                              height: 1000.0,
                              width: double.infinity,
                            ),
                          ),
                        ),
                      ),
                    ],
                  ),
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }, variant: TargetPlatformVariant.all());
}