IdlingResource for destroy() VideoFileRenderer

webrtc/examples/androidtests/src/org/appspot/apprtc/test/CallActivityStubbedInputOutputTest.java

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 package org.appspot.apprtc.test;
 
 import static android.support.test.espresso.action.ViewActions.click;
 import static android.support.test.espresso.matcher.ViewMatchers.withId;
 import static android.support.test.espresso.Espresso.onView;
 
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Environment;
+import android.support.test.espresso.contrib.CountingIdlingResource;
+import android.support.test.espresso.Espresso;
 import android.support.test.espresso.IdlingPolicies;
+import android.support.test.espresso.IdlingResource;
 import android.support.test.filters.LargeTest;
 import android.support.test.rule.ActivityTestRule;
 import android.support.test.runner.AndroidJUnit4;
 import android.support.test.InstrumentationRegistry;
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import org.appspot.apprtc.CallActivity;
 import org.appspot.apprtc.ConnectActivity;
 import org.appspot.apprtc.R;
+import org.junit.After;
+import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 /**
  * Used to start a loopback call with video input from file and video output also to file.
  * The test case is a building block in other testing for video quality.
  */
 @RunWith(AndroidJUnit4.class)
 @LargeTest
-public class ConnectActivityStubbedInputOutputTest {
-  private static final String TAG = "ConnectActivityStubbedInputOutputTest";
+public class CallActivityStubbedInputOutputTest {
+  private static final String TAG = "CallActivityStubbedInputOutputTest";
 
   @Rule
-  public ActivityTestRule<ConnectActivity> rule =
-      new ActivityTestRule<ConnectActivity>(ConnectActivity.class) {
+  public ActivityTestRule<CallActivity> rule =
+      new ActivityTestRule<CallActivity>(CallActivity.class) {
         @Override
         protected Intent getActivityIntent() {
-          Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
-          Intent intent = new Intent("android.intent.action.VIEW", Uri.parse("https://appr.tc"),
-              context, ConnectActivity.class);
+          Context context =
+              InstrumentationRegistry
+                  .getContext(); // InstrumentationRegistry.getInstrumentation().getTargetContext();
+          Intent intent = new Intent("android.intent.action.VIEW", Uri.parse("https://appr.tc"));
 
           intent.putExtra(CallActivity.EXTRA_USE_VALUES_FROM_INTENT, true);
 
           intent.putExtra(CallActivity.EXTRA_LOOPBACK, true);
           intent.putExtra(CallActivity.EXTRA_AUDIOCODEC, "OPUS");
           intent.putExtra(CallActivity.EXTRA_VIDEOCODEC, "VP8");
           intent.putExtra(CallActivity.EXTRA_CAPTURETOTEXTURE_ENABLED, false);
           intent.putExtra(CallActivity.EXTRA_CAMERA2, false);
           intent.putExtra(CallActivity.EXTRA_ROOMID, UUID.randomUUID().toString().substring(0, 8));
 
           intent.putExtra(CallActivity.EXTRA_VIDEO_FILE_AS_CAMERA,
               Environment.getExternalStorageDirectory().getAbsolutePath()
                   + "/chromium_tests_root/resources/reference_video_640x360_30fps.y4m");
 
           intent.putExtra(CallActivity.EXTRA_SAVE_REMOTE_VIDEO_TO_FILE,
               Environment.getExternalStorageDirectory().getAbsolutePath() + "/output.y4m");
           intent.putExtra(CallActivity.EXTRA_SAVE_REMOTE_VIDEO_TO_FILE_WIDTH, 640);
           intent.putExtra(CallActivity.EXTRA_SAVE_REMOTE_VIDEO_TO_FILE_HEIGHT, 360);
 
           return intent;
         }
       };
 
+  private static class BusyResource implements CallActivity.CountingResource {
+    CountingIdlingResource countingIdlingResource = new CountingIdlingResource("BusyResource");
+
+    @Override
+    public void increment() {
+      countingIdlingResource.increment();
+    }
+
+    @Override
+    public void decrement() {
+      countingIdlingResource.decrement();
+    }
+  }
+  private IdlingResource idlingResource;
+
+  @Before
+  public void registerIdlingResource() {
+    BusyResource busyR = new BusyResource();
+    idlingResource = busyR.countingIdlingResource;
+    rule.getActivity().setCountingResource(busyR);
+    Espresso.registerIdlingResources(idlingResource);
+  }
+
+  @After
+  public void unregisterIdlingResources() {
+    if (idlingResource != null) {
+      Espresso.unregisterIdlingResources(idlingResource);
+    }
+  }
+
   @Test
   public void testLoopback() throws InterruptedException {
     // The time to write down the data during closing of the program can take a while.
     IdlingPolicies.setMasterPolicyTimeout(240000, TimeUnit.MILLISECONDS);
 
     // During the time we sleep it will record video.
     Thread.sleep(10000);
 
+    // XXX: Not needed at the moment to finish the call.

[kjellander_webrtc, 2017/03/10 12:14:12]

What does this mean "not at the moment"? When will it be needed?
If it's not needed ever again, remove all of 116-121, or why would we need the
sleep?

     // Click on hang-up button.
-    onView(withId(R.id.button_call_disconnect)).perform(click());
+    // onView(withId(R.id.button_call_disconnect)).perform(click());
   }
 }