如何在 Espresso 测试失败时截取屏幕截图?

问题描述

我正在寻找一种在测试失败后和关闭之前截取设备屏幕截图的方法.

I am looking for a way to take a screenshot of device after test failed and before get closed.

推荐答案

我找到的最简单的方法:

Easiest way that I found:

@Rule
public TestRule watcher = new TestWatcher() {
  @Override
  protected void failed(Throwable e, Description description) {
    // Save to external storage (usually /sdcard/screenshots)
    File path = new File(Environment.getExternalStorageDirectory().getAbsolutePath()
        + "/screenshots/" + getTargetContext().getPackageName());
    if (!path.exists()) {
      path.mkdirs();
    }

    // Take advantage of UiAutomator screenshot method
    UiDevice device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
    String filename = description.getClassName() + "-" + description.getMethodName() + ".png";
    device.takeScreenshot(new File(path, filename));
  }
};

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