android - 如何使用 Espresso 等待另一项 Activity 开始？

Question

我如何进行测试以在单击按钮时等待 Activity 启动？

我的测试非常简单:

public void testStartsNewActivity() {
   onView(withId(R.id.button)).perform(click());
   // assert new Activity is launched
}

谢谢!

Answer 1

断言新 Activity 已启动与断言属于该新 Activity 的 View 显示在屏幕上一样简单。

检查 this更多 sample 。附加信息:

By default, Espresso waits for UI events in the current message queue to process and default AsyncTasks* to complete before it moves on to the next test operation. This should address the majority of application/test synchronization in your application.

因此，鉴于您的“非常简单”的测试用例，我假设无需等待自定义资源加载并断言显示 View 就足够了。