android - 使用 Espresso 进行相机操作 UI 测试

Question

我需要自动化我的 UI 测试，以便使用 espresso 测试项目进行后续操作。

操作:

点击一个按钮打开我的手机摄像头。捕获图像，并将图像保存在 sdcard 存储中。完成后还会在屏幕上更新一个小 ImageView 。

应用程序运行良好，但对于所有其他操作和类似类型的上述操作，一次又一次地手动测试它成为一个耗时的过程。

Answer 1

我正在处理类似的问题并在下面的链接中找到了最佳可用解决方案 Camera UI test

// CameraActivityInstrumentationTest.java
public class CameraActivityInstrumentationTest {

    // IntentsTestRule is an extension of ActivityTestRule. IntentsTestRule sets up Espresso-Intents
    // before each Test is executed to allow stubbing and validation of intents.
    @Rule
    public IntentsTestRule<CameraActivity> intentsRule = new IntentsTestRule<>(CameraActivity.class);

    @Test
    public void validateCameraScenario() {
        // Create a bitmap we can use for our simulated camera image
        Bitmap icon = BitmapFactory.decodeResource(
                InstrumentationRegistry.getTargetContext().getResources(),
                R.mipmap.ic_launcher);

        // Build a result to return from the Camera app
        Intent resultData = new Intent();
        resultData.putExtra("data", icon);
        Instrumentation.ActivityResult result = new Instrumentation.ActivityResult(Activity.RESULT_OK, resultData);

        // Stub out the Camera. When an intent is sent to the Camera, this tells Espresso to respond 
        // with the ActivityResult we just created
        intending(toPackage("com.android.camera2")).respondWith(result);

        // Now that we have the stub in place, click on the button in our app that launches into the Camera
        onView(withId(R.id.btnTakePicture)).perform(click());

        // We can also validate that an intent resolving to the "camera" activity has been sent out by our app
        intended(toPackage("com.android.camera2"));

        // ... additional test steps and validation ...
    }
}