android - Espresso 如何等待一段时间(1 小时)？

Question

在我的测试用例中，我必须记录 1 小时，在 robotium solo.sleep(600000) 中完成了我的工作，但在 espresso 中，我对 IdlingResource 概念感到困惑。我必须开始录制并等待一段时间(取决于测试类型)15 分钟、60 分钟等。

robotium 中的等效代码

    solo.clickOnView(solo.getView("start_record"));
    solo.sleep(duration * 60 * 1000);
    solo.clickOnView(solo.getView("stop_record"));

我尝试在 espresso 中这样使用它

@RunWith(AndroidJUnit4.class)
@SmallTest
public class AaEspressoTest {

private static final String LAUNCHER_ACTIVITY_FULL_CLASSNAME = "com.absd.rec.RecorderActivity";
private static Class<?> launcherActivityClass;
private Solo solo;
private static CoreRecordingTest skyroTestRunner;


private static Class<? extends Activity> activityClass;

static {
    try {
        activityClass = (Class<? extends Activity>) Class.forName(LAUNCHER_ACTIVITY_FULL_CLASSNAME);
    } catch (ClassNotFoundException e) {
        throw new RuntimeException(e);
    }
}

@Rule
public final ActivityTestRule<?> activityRule
        = new ActivityTestRule<>(activityClass);

private IntentServiceIdlingResource idlingResource;

@Before
public void registerIntentServiceIdlingResource() {
    Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
    idlingResource = new IntentServiceIdlingResource(instrumentation.getTargetContext());
    Espresso.registerIdlingResources(idlingResource);
}

@After
public void unregisterIntentServiceIdlingResource() {
    Espresso.unregisterIdlingResources(idlingResource);
}

@Test
public void testHello() throws Exception {

 onView(withId(AaEspressoTest.getId("recorderpage_record"))).perform(click());

    registerIntentServiceIdlingResource();

    onView(withId(AaEspressoTest.getId("recorderpage_stop"))).perform(click());

   }
}

闲置资源

public class IntentServiceIdlingResource implements IdlingResource {
private final Context context;
private ResourceCallback resourceCallback;
public static boolean status = false;

public IntentServiceIdlingResource(Context context) {
    this.context = context;
}

@Override
public String getName() {
    return IntentServiceIdlingResource.class.getName();
}

@Override
public boolean isIdleNow() {
    return getTimer();
}

@Override
public void registerIdleTransitionCallback(ResourceCallback resourceCallback) {
    this.resourceCallback = resourceCallback;

}

private static boolean getTimer() {

    new CountDownTimer(5000, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            // Do Nothing
            status = false;
        }

        @Override
        public void onFinish() {             
            status = true;
        }
    };
    return status;
}
}

异常(exception):

android.support.test.espresso.IdlingResourceTimeoutException: Wait for [com.adbs.recorder.IntentServiceIdlingResource] to become idle timed out

Answer 1

您需要一个带有 isIdleNow() 的 IdlingResource，它仅在经过特定时间后才返回 true。为此，请保存开始时间并将其与当前时间进行比较:

public class ElapsedTimeIdlingResource implements IdlingResource {
  private final long startTime;
  private final long waitingTime;
  private ResourceCallback resourceCallback;

  public ElapsedTimeIdlingResource(long waitingTime) {
    this.startTime = System.currentTimeMillis();
    this.waitingTime = waitingTime;
  }

  @Override
  public String getName() {
    return ElapsedTimeIdlingResource.class.getName() + ":" + waitingTime;
  }

  @Override
  public boolean isIdleNow() {
    long elapsed = System.currentTimeMillis() - startTime;
    boolean idle = (elapsed >= waitingTime);
    if (idle) {
      resourceCallback.onTransitionToIdle();
    }
    return idle;
  }

  @Override
  public void registerIdleTransitionCallback(
      ResourceCallback resourceCallback) {
    this.resourceCallback = resourceCallback;
  }
}

在您的测试中创建并注册此空闲资源:

@Test
public static void waitForOneHour() {
  long waitingTime = DateUtils.HOUR_IN_MILLIS;

  // Start
  onView(withId(AaEspressoTest.getId("recorderpage_record")))
      .perform(click());

  // Make sure Espresso does not time out
  IdlingPolicies.setMasterPolicyTimeout(
      waitingTime * 2, TimeUnit.MILLISECONDS);
  IdlingPolicies.setIdlingResourceTimeout(
      waitingTime * 2, TimeUnit.MILLISECONDS);

  // Now we wait
  IdlingResource idlingResource = new ElapsedTimeIdlingResource(waitingTime);
  Espresso.registerIdlingResources(idlingResource);

  // Stop
  onView(withId(AaEspressoTest.getId("recorderpage_stop")))
      .perform(click());

  // Clean up
  Espresso.unregisterIdlingResources(idlingResource);
}

您需要调用 setMasterPolicyTimeout 和 setIdlingResourceTimeout 来确保 Espresso 不会因超时而终止测试。

完整示例:https://github.com/chiuki/espresso-samples/tree/master/idling-resource-elapsed-time