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

html_utils.dart

  dynamic launchURL(BuildContext context, String url) async {
    if (url == 'about:blank') return;

    if (url.startsWith('internal://')) {
      final isGroups = url.contains('/groups');

      if (isGroups) return _handleUnsupported(context);
    }
  }

  void _handleUnsupported(BuildContext context) {
    SnackBarUtil.error(
      context: context,
      message: LocalePathUtils.errorsLocalePath('unknownRoute'),
    );
  }