如果你没有看到失败-这意味着你的Flutter web应用的错误处理是由你的开发同事以这种方式实现的。

Future<void> runApp(WidgetTester tester) async {
  final originalOnError = FlutterError.onError!;
  
  app.main();
  await tester.pumpAndSettle();

  FlutterError.onError = (FlutterErrorDetails details) {
    originalOnError(details); // Calls test framework's error handler
  };
}