testWidgets('semantics label not in order', (tester) async {
    await tester.pumpWidget(
      Directionality(
        textDirection: TextDirection.ltr,
        child: Text.rich(
          TextSpan(
            children: [
              WidgetSpan(
                child: Text.rich(
                  TextSpan(
                    children: [
                      WidgetSpan(child: Text('before')),
                      TextSpan(text: 'foo'),
                      WidgetSpan(child: Text('after')),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
    expect(tester.getSemantics(find.byType(Text).first),
        matchesSemantics(label: 'before\nfoo\nafter'));
  });