3

当我使用：

    WorkManagerTestInitHelper.initializeTestWorkManager(context);
    WorkManager workManager =  WorkManager.getInstance();

获取WorkManager实例，WorkManager未能实现重试。我将介绍最简单的测试：

public class WorkManagerTest {



   Context context;


@Before
public void setUp() throws Exception {

    context = InstrumentationRegistry.getTargetContext();


}






@Test
public   void testWorker1(){
    Constraints constraints = new Constraints.Builder()
                .build();
    OneTimeWorkRequest.Builder updateorderworkerBuilder =
            new OneTimeWorkRequest.Builder(TestWorker1.class)
                    .setConstraints(constraints)
                    //MIN_BACKOFF_MILLIS == 10000
                    .setBackoffCriteria(BackoffPolicy.LINEAR,10000, TimeUnit.MILLISECONDS);




    OneTimeWorkRequest workRequest = updateorderworkerBuilder.build();
    WorkManager workManager =  WorkManager.getInstance();
    workManager.enqueue(workRequest);

    try {
        Thread.sleep(50000);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }


}


@Test
public   void testWorker2(){
    Constraints constraints = new Constraints.Builder()
                           .build();
    OneTimeWorkRequest.Builder updateorderworkerBuilder =
            new OneTimeWorkRequest.Builder(TestWorker2.class)
                    .setConstraints(constraints)
                    //MIN_BACKOFF_MILLIS == 10000
                    .setBackoffCriteria(BackoffPolicy.LINEAR,10000, TimeUnit.MILLISECONDS);




    OneTimeWorkRequest workRequest = updateorderworkerBuilder.build();
    WorkManagerTestInitHelper.initializeTestWorkManager(context);
    WorkManager workManager =  WorkManager.getInstance();
    workManager.enqueue(workRequest);

    try {
        Thread.sleep(50000);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }


}


public static class TestWorker1 extends Worker {

    /**
     * Override this method to do your actual background processing.
     *
     * @return The result of the work, corresponding to a {@link Result} value.  If a
     * different value is returned, the result shall be defaulted to
     * {@link Result#FAILURE}.
     */
    @NonNull
    @Override
    public Result doWork() {
        Log.d("TEST_WORKER", "inside doWork()1");
        return Result.RETRY;
    }
}


public static class TestWorker2 extends Worker {

    /**
     * Override this method to do your actual background processing.
     *
     * @return The result of the work, corresponding to a {@link Result} value.  If a
     * different value is returned, the result shall be defaulted to
     * {@link Result#FAILURE}.
     */
    @NonNull
    @Override
    public Result doWork() {
        Log.d("TEST_WORKER", "inside doWork()2");
        return Result.RETRY;
    }
}

}

在 Logcat 中，我看到：

07-22 23:34:25.184 5346-5388/com.billst.app.debug D/TEST_WORKER: inside doWork()1
07-22 23:34:30.178 5346-5391/com.billst.app.debug D/TEST_WORKER: inside doWork()1
07-22 23:34:40.238 5346-5388/com.billst.app.debug D/TEST_WORKER: inside doWork()1
07-22 23:35:00.300 5346-5391/com.billst.app.debug D/TEST_WORKER: inside doWork()1
07-22 23:35:15.130 5346-5372/com.billst.app.debug D/TEST_WORKER: inside doWork()2

即使我独立执行 2 个测试，我也会得到相同的结果。我们看到 WorkManagerTestInitHelper 的使用 阻止了 WorkManager 完成工作的重试。

我是否正确使用WorkManagerTestInitHelper？

4

1 回答 1

1

You cannot simulate retries in test mode. This is intentional because you should be testing your Worker and not testing WorkManager. You cannot use WorkManagerTestInitHelper for this. If you want to test that your Worker returns a Result.retry() then you could also use the new TestWorkerBuilder<> and the TestListenableWorkerBuilder APIs.

Here is an example. https://android.googlesource.com/platform/frameworks/support/+/androidx-master-dev/work/workmanager-testing/src/androidTest/java/androidx/work/testing/TestWorkerBuilderTest.kt

于 2019-05-26T15:53:51.460 回答