I'm testing Android app using Espresso & Mockito and extending ActivityInstrumentationTestCase2 The UI test works great but i have a button the when pressing on it, the code on the onClick method, fires startActivity(Intent), and than crash the app and test.
On the real Activity I have this onClick method
public void onContinueButtonClicked(View v) { Intent intent = new Intent(CurrentActivity.this, NextActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); startActivity(intent); } and on the test class i call that method using
onView(withId(R.id.btn_continue)).perform(click()); once the startActivity fires, I get a lot of those lines:
I/MonitoringInstrumentation: Unstopped activity count: 1 on the log and then the app crashed
the crash :
03-09 14:39:41.654 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:41.704 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:41.754 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:41.804 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:41.854 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:41.905 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:41.955 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.005 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.055 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.105 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.156 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.206 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.256 21469-21505/com.example I/MonitoringInstrumentation: Unstopped activity count: 1 03-09 14:39:42.314 21469-21505/com.example E/THREAD_STATE: Thread[main,5,main] android.os.MessageQueue.nativePollOnce(Native Method) android.os.MessageQueue.next(MessageQueue.java:323) android.os.Looper.loop(Looper.java:135) android.app.ActivityThread.main(ActivityThread.java:5417) java.lang.reflect.Method.invoke(Native Method) com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) Thread[Thread-904,5,main] java.lang.Object.wait(Native Method) java.lang.Thread.parkFor$(Thread.java:1220) sun.misc.Unsafe.park(Unsafe.java:299) java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2013) java.util.concurrent.PriorityBlockingQueue.take(PriorityBlockingQueue.java:510) com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:92) Thread[FinalizerDaemon,5,system] java.lang.Object.wait(Native Method) java.lang.Object.wait(Object.java:423) java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:101) java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:72) java.lang.Daemons$FinalizerDaemon.run(Daemons.java:185) java.lang.Thread.run(Thread.java:818) Thread[Queue,10,main] java.lang.Object.wait(Native Method) java.lang.Thread.parkFor$(Thread.java:1220) sun.misc.Unsafe.park(Unsafe.java:299) java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2013) java.util.concurrent.PriorityBlockingQueue.take(PriorityBlockingQueue.java:510) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.performOperation(DependencyPriorityBlockingQueue.java:197) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.get(DependencyPriorityBlockingQueue.java:236) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.take(DependencyPriorityBlockingQueue.java:65) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.take(DependencyPriorityBlockingQueue.java:46) java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1038) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1098) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) java.lang.Thread.run(Thread.java:818) Thread[Queue,10,main] java.lang.Object.wait(Native Method) java.lang.Thread.parkFor$(Thread.java:1220) sun.misc.Unsafe.park(Unsafe.java:299) java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2013) java.util.concurrent.PriorityBlockingQueue.take(PriorityBlockingQueue.java:510) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.performOperation(DependencyPriorityBlockingQueue.java:197) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.get(DependencyPriorityBlockingQueue.java:236) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.take(DependencyPriorityBlockingQueue.java:65) io.fabric.sdk.android.services.concurrency.DependencyPriorityBlockingQueue.take(DependencyPriorityBlockingQueue.java:46) java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1038) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1098) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) java.lang.Thread.run(Thread.java:818) Thread[Queue,10,main] java.lang.Object.wait(Native Method) java.lang.Thread.parkFor$(Thread.java:1220) sun.misc.Unsafe.park(Unsafe.java:299) java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObjec Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'rx.Subscription rx.Observable.subscribe(rx.functions.Action1, rx.functions.Action1)' on a null object reference at com.example.activities.MainActivity.onCreate(MainActivity.java:52) at android.app.Activity.performCreate(Activity.java:6251) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) at android.support.test.runner.MonitoringInstrumentation.callActivityOnCreate(MonitoringInstrumentation.java:532) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) ... 23 more 2 Answers
Answers 1
So, Answering my own question. if anyone will need this info. There is no way to catch the Context.startActivity(); The Activity will start, to prevent crashed, you need to mock all the methods in the new Activity.
Answers 2
You could stub the intent like the official samples demonstrated with the ACTION_IMAGE_CAPTURE intent:
@Before public void stubCameraIntent() { ActivityResult result = createImageCaptureActivityResultStub(); // Stub the Intent. intending(hasAction(MediaStore.ACTION_IMAGE_CAPTURE)).respondWith(result); } In your case that could be something like this:
@Before public void stubNextIntent() { intended(hasComponent(NextActivity.class.getName())); } this tutorial might be interesting for you
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