Unit Testing a Utility function that returns a Widget (Test)

html_utils_test.dart

testWidgets('cant', (tester) async {
  when(mockUrlLauncherHelper.cl(any)).thenAnswer((_) async => false);
  when(mockCoreCubit.state).thenReturn(fixtureCoreCubitLoaded);
          // assert
  const mockUrl = 'https://test.test';

   Future<void> future(BuildContext context) async {
    await Future.delayed(const Duration(seconds: 1));
    return htmlContentUtils.launchURL(context, mockUrl);
  }

  final widget = providedLocalizedWidgetForTesting(
    child: LayoutBuilder(
      builder: (context, _) {
        return FutureBuilder(
          future: future(context),
          builder: (ctx, snapshot) {
            return const SizedBox.shrink();
          },
        );
      },
    ),
  );

  await tester.pumpWidget(widget);
  await tester.pumpAndSettle();
  await tester.pump(const Duration(seconds: 1));

  expect(find.byType(Flushbar), findsOneWidget);
});