有没有办法在 Flutter 单元测试中测试 AppLifecycleState 更改？

Question

当应用程序移到后台 (AppLifecycleState.paused) 时，我的应用程序将用户首选项写入本地文件，我想为此行为编写测试。

有没有办法在单元测试中模仿这一点？或者这是需要作为集成测试完成的事情吗？

Answer 1

tester.binding.handleAppLifecycleStateChanged is definitly the correct way to test it.

ex: Statefull widget on the home page that listen to app lifecycle

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    if (state == AppLifecycleState.paused) {
      pushLoginPage(context);
    }
  }

If you want to test this, you have to paused first, and then resumed to ensure Flutter navigation.

Answer 2

您可以binding.handleAppLifecycleStateChanged在单元测试中调用来伪造应用程序进出前台。