media/tests/MediaRouter/src/com/android/mediaroutertest/MediaRouterManagerTest.java - platform/frameworks/base - Gitiles

 /*
  * Copyright 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.mediaroutertest;

 import static android.media.MediaRoute2Info.PLAYBACK_VOLUME_FIXED;
 import static android.media.MediaRoute2Info.PLAYBACK_VOLUME_VARIABLE;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.verify;

 import android.content.Context;
 import android.content.Intent;
 import android.media.MediaRoute2Info;
 import android.media.MediaRouter2;
 import android.media.MediaRouter2Manager;
 import android.support.test.InstrumentationRegistry;
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 import android.text.TextUtils;

 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Predicate;

 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class MediaRouterManagerTest {
     private static final String TAG = "MediaRouterManagerTest";

     // Must be the same as SampleMediaRoute2ProviderService
     public static final String ROUTE_ID1 = "route_id1";
     public static final String ROUTE_NAME1 = "Sample Route 1";
     public static final String ROUTE_ID2 = "route_id2";
     public static final String ROUTE_NAME2 = "Sample Route 2";

     public static final String ROUTE_ID_SPECIAL_CATEGORY = "route_special_category";
     public static final String ROUTE_NAME_SPECIAL_CATEGORY = "Special Category Route";

     public static final int VOLUME_MAX = 100;
     public static final String ROUTE_ID_FIXED_VOLUME = "route_fixed_volume";
     public static final String ROUTE_NAME_FIXED_VOLUME = "Fixed Volume Route";
     public static final String ROUTE_ID_VARIABLE_VOLUME = "route_variable_volume";
     public static final String ROUTE_NAME_VARIABLE_VOLUME = "Variable Volume Route";

     public static final String ACTION_REMOVE_ROUTE =
             "com.android.mediarouteprovider.action_remove_route";

     public static final String CATEGORY_SAMPLE =
             "com.android.mediarouteprovider.CATEGORY_SAMPLE";
     public static final String CATEGORY_SPECIAL =
             "com.android.mediarouteprovider.CATEGORY_SPECIAL";

     private static final int TIMEOUT_MS = 5000;

     private Context mContext;
     private MediaRouter2Manager mManager;
     private MediaRouter2 mRouter2;
     private Executor mExecutor;
     private String mPackageName;

     private static final List<String> CONTROL_CATEGORIES_ALL = new ArrayList();
     private static final List<String> CONTROL_CATEGORIES_SPECIAL = new ArrayList();
     static {
         CONTROL_CATEGORIES_ALL.add(CATEGORY_SAMPLE);
         CONTROL_CATEGORIES_ALL.add(CATEGORY_SPECIAL);

         CONTROL_CATEGORIES_SPECIAL.add(CATEGORY_SPECIAL);
     }

     @Before
     public void setUp() throws Exception {
         mContext = InstrumentationRegistry.getTargetContext();
         mManager = MediaRouter2Manager.getInstance(mContext);
         mRouter2 = MediaRouter2.getInstance(mContext);
         //TODO: If we need to support thread pool executors, change this to thread pool executor.
         mExecutor = Executors.newSingleThreadExecutor();
         mPackageName = mContext.getPackageName();
     }

     //TODO: Move to a separate file
     @Test
     public void testMediaRoute2Info() {
         MediaRoute2Info routeInfo1 = new MediaRoute2Info.Builder("id", "name")
                 .build();
         MediaRoute2Info routeInfo2 = new MediaRoute2Info.Builder(routeInfo1).build();

         MediaRoute2Info routeInfo3 = new MediaRoute2Info.Builder(routeInfo1)
                 .setClientPackageName(mPackageName).build();

         assertEquals(routeInfo1, routeInfo2);
         assertNotEquals(routeInfo1, routeInfo3);
     }

     @Test
     public void testOnRoutesAdded() throws Exception {
         CountDownLatch latch = new CountDownLatch(1);
         MediaRouter2Manager.Callback callback = new MediaRouter2Manager.Callback() {
             @Override
             public void onRoutesAdded(List<MediaRoute2Info> routes) {
                 assertTrue(routes.size() > 0);
                 for (MediaRoute2Info route : routes) {
                     if (route.getId().equals(ROUTE_ID1) && route.getName().equals(ROUTE_NAME1)) {
                         latch.countDown();
                     }
                 }
             }
         };
         mManager.registerCallback(mExecutor, callback);

         assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));

         mManager.unregisterCallback(callback);
     }

     @Test
     public void testOnRoutesRemoved() throws Exception {
         MediaRouter2Manager.Callback mockCallback = mock(MediaRouter2Manager.Callback.class);
         mManager.registerCallback(mExecutor, mockCallback);

         MediaRouter2.Callback routerCallback = new MediaRouter2.Callback();
         mRouter2.registerCallback(mExecutor, routerCallback);

         Map<String, MediaRoute2Info> routes =
                 waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

         CountDownLatch latch = new CountDownLatch(1);
         MediaRouter2Manager.Callback callback = new MediaRouter2Manager.Callback() {
             @Override
             public void onRoutesRemoved(List<MediaRoute2Info> routes) {
                 assertTrue(routes.size() > 0);
                 for (MediaRoute2Info route : routes) {
                     if (route.getId().equals(ROUTE_ID2) && route.getName().equals(ROUTE_NAME2)) {
                         latch.countDown();
                     }
                 }
             }
         };
         mManager.registerCallback(mExecutor, callback);

         //TODO: Figure out a more proper way to test.
         // (Control requests shouldn't be used in this way.)
         mRouter2.sendControlRequest(routes.get(ROUTE_ID2), new Intent(ACTION_REMOVE_ROUTE));
         assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));

         mRouter2.unregisterCallback(routerCallback);
         mManager.unregisterCallback(mockCallback);
     }

     /**
      * Tests if we get proper routes for application that has special control category.
      */
     @Test
     public void testControlCategory() throws Exception {
         MediaRouter2Manager.Callback mockCallback = mock(MediaRouter2Manager.Callback.class);
         mManager.registerCallback(mExecutor, mockCallback);

         Map<String, MediaRoute2Info> routes =
                 waitAndGetRoutesWithManager(CONTROL_CATEGORIES_SPECIAL);

         Assert.assertEquals(1, routes.size());
         Assert.assertNotNull(routes.get(ROUTE_ID_SPECIAL_CATEGORY));

         mManager.unregisterCallback(mockCallback);
     }

     /**
      * Tests if we get proper routes for application that has special control category.
      */
     @Test
     public void testGetRoutes() throws Exception {
         MediaRouter2.Callback mockCallback = mock(MediaRouter2.Callback.class);
         mRouter2.registerCallback(mExecutor, mockCallback);

         Map<String, MediaRoute2Info> routes = waitAndGetRoutes(CONTROL_CATEGORIES_SPECIAL);

         Assert.assertEquals(1, routes.size());
         Assert.assertNotNull(routes.get(ROUTE_ID_SPECIAL_CATEGORY));

         mRouter2.unregisterCallback(mockCallback);
     }

     @Test
     public void testOnRouteSelected() throws Exception {
         MediaRouter2.Callback routerCallback = new MediaRouter2.Callback();
         MediaRouter2Manager.Callback managerCallback = mock(MediaRouter2Manager.Callback.class);

         mManager.registerCallback(mExecutor, managerCallback);
         mRouter2.registerCallback(mExecutor, routerCallback);

         Map<String, MediaRoute2Info> routes = waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

         MediaRoute2Info routeToSelect = routes.get(ROUTE_ID1);
         assertNotNull(routeToSelect);

         mManager.selectRoute(mPackageName, routeToSelect);
         verify(managerCallback, timeout(TIMEOUT_MS))
                 .onRouteSelected(eq(mPackageName),
                         argThat(route -> route != null && route.equals(routeToSelect)));

         mRouter2.unregisterCallback(routerCallback);
         mManager.unregisterCallback(managerCallback);
     }

     /**
      * Tests selecting and unselecting routes of a single provider.
      */
     @Test
     public void testSingleProviderSelect() throws Exception {
         MediaRouter2.Callback routerCallback = mock(MediaRouter2.Callback.class);

         mRouter2.registerCallback(mExecutor, routerCallback);

         Map<String, MediaRoute2Info> routes = waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

         awaitOnRouteChangedManager(
                 () -> mManager.selectRoute(mPackageName, routes.get(ROUTE_ID1)),
                 ROUTE_ID1,
                 route -> TextUtils.equals(route.getClientPackageName(), mPackageName));

         awaitOnRouteChangedManager(
                 () -> mManager.selectRoute(mPackageName, routes.get(ROUTE_ID2)),
                 ROUTE_ID2,
                 route -> TextUtils.equals(route.getClientPackageName(), mPackageName));

         awaitOnRouteChangedManager(
                 () -> mManager.unselectRoute(mPackageName),
                 ROUTE_ID2,
                 route -> TextUtils.equals(route.getClientPackageName(), null));

         mRouter2.unregisterCallback(routerCallback);
     }

     @Test
     public void testControlVolumeWithRouter() throws Exception {
         Map<String, MediaRoute2Info> routes = waitAndGetRoutes(CONTROL_CATEGORIES_ALL);

         MediaRoute2Info volRoute = routes.get(ROUTE_ID_VARIABLE_VOLUME);
         int originalVolume = volRoute.getVolume();
         int deltaVolume = (originalVolume == volRoute.getVolumeMax() ? -1 : 1);

         awaitOnRouteChanged(
                 () -> mRouter2.requestUpdateVolume(volRoute, deltaVolume),
                 ROUTE_ID_VARIABLE_VOLUME,
                 (route -> route.getVolume() == originalVolume + deltaVolume));

         awaitOnRouteChanged(
                 () -> mRouter2.requestSetVolume(volRoute, originalVolume),
                 ROUTE_ID_VARIABLE_VOLUME,
                 (route -> route.getVolume() == originalVolume));
     }

     @Test
     public void testControlVolumeWithManager() throws Exception {
         MediaRouter2.Callback mockCallback = mock(MediaRouter2.Callback.class);

         mRouter2.registerCallback(mExecutor, mockCallback);
         Map<String, MediaRoute2Info> routes = waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

         MediaRoute2Info volRoute = routes.get(ROUTE_ID_VARIABLE_VOLUME);
         int originalVolume = volRoute.getVolume();
         int deltaVolume = (originalVolume == volRoute.getVolumeMax() ? -1 : 1);

         awaitOnRouteChangedManager(
                 () -> mManager.requestUpdateVolume(volRoute, deltaVolume),
                 ROUTE_ID_VARIABLE_VOLUME,
                 (route -> route.getVolume() == originalVolume + deltaVolume));

         awaitOnRouteChangedManager(
                 () -> mManager.requestSetVolume(volRoute, originalVolume),
                 ROUTE_ID_VARIABLE_VOLUME,
                 (route -> route.getVolume() == originalVolume));

         mRouter2.unregisterCallback(mockCallback);
     }

     @Test
     public void testVolumeHandling() throws Exception {
         MediaRouter2.Callback mockCallback = mock(MediaRouter2.Callback.class);
         mRouter2.registerCallback(mExecutor, mockCallback);
         Map<String, MediaRoute2Info> routes = waitAndGetRoutes(CONTROL_CATEGORIES_ALL);

         MediaRoute2Info fixedVolumeRoute = routes.get(ROUTE_ID_FIXED_VOLUME);
         MediaRoute2Info variableVolumeRoute = routes.get(ROUTE_ID_VARIABLE_VOLUME);

         assertEquals(PLAYBACK_VOLUME_FIXED, fixedVolumeRoute.getVolumeHandling());
         assertEquals(PLAYBACK_VOLUME_VARIABLE, variableVolumeRoute.getVolumeHandling());
         assertEquals(VOLUME_MAX, variableVolumeRoute.getVolumeMax());

         mRouter2.unregisterCallback(mockCallback);
     }

     Map<String, MediaRoute2Info> waitAndGetRoutes(List<String> controlCategories) throws Exception {
         CountDownLatch latch = new CountDownLatch(1);
         MediaRouter2.Callback callback = new MediaRouter2.Callback() {
             @Override
             public void onRoutesAdded(List<MediaRoute2Info> added) {
                 if (added.size() > 0) latch.countDown();
             }
         };
         mRouter2.setControlCategories(controlCategories);
         mRouter2.registerCallback(mExecutor, callback);
         try {
             assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
             return createRouteMap(mRouter2.getRoutes());
         } finally {
             mRouter2.unregisterCallback(callback);
         }
     }

     Map<String, MediaRoute2Info> waitAndGetRoutesWithManager(List<String> controlCategories)
             throws Exception {
         CountDownLatch latch = new CountDownLatch(2);

         // A dummy callback is required to send control category info.
         MediaRouter2.Callback routerCallback = new MediaRouter2.Callback();
         MediaRouter2Manager.Callback managerCallback = new MediaRouter2Manager.Callback() {
             @Override
             public void onRoutesAdded(List<MediaRoute2Info> routes) {
                 if (routes.size() > 0) {
                     latch.countDown();
                 }
             }
             @Override
             public void onControlCategoriesChanged(String packageName) {
                 if (TextUtils.equals(mPackageName, packageName)) {
                     latch.countDown();
                 }
             }
         };
         mManager.registerCallback(mExecutor, managerCallback);
         mRouter2.setControlCategories(controlCategories);
         mRouter2.registerCallback(mExecutor, routerCallback);
         try {
             assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
             return createRouteMap(mManager.getAvailableRoutes(mPackageName));
         } finally {
             mRouter2.unregisterCallback(routerCallback);
             mManager.unregisterCallback(managerCallback);
         }
     }

     void awaitOnRouteChanged(Runnable task, String routeId,
             Predicate<MediaRoute2Info> predicate) throws Exception {
         CountDownLatch latch = new CountDownLatch(1);
         MediaRouter2.Callback callback = new MediaRouter2.Callback() {
             @Override
             public void onRoutesChanged(List<MediaRoute2Info> changed) {
                 MediaRoute2Info route = createRouteMap(changed).get(routeId);
                 if (route != null && predicate.test(route)) {
                     latch.countDown();
                 }
             }
         };
         mRouter2.registerCallback(mExecutor, callback);
         try {
             new Thread(task).start();
             assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
         } finally {
             mRouter2.unregisterCallback(callback);
         }
     }

     void awaitOnRouteChangedManager(Runnable task, String routeId,
             Predicate<MediaRoute2Info> predicate) throws Exception {
         CountDownLatch latch = new CountDownLatch(1);
         MediaRouter2Manager.Callback callback = new MediaRouter2Manager.Callback() {
             @Override
             public void onRoutesChanged(List<MediaRoute2Info> changed) {
                 MediaRoute2Info route = createRouteMap(changed).get(routeId);
                 if (route != null && predicate.test(route)) {
                     latch.countDown();
                 }
             }
         };
         mManager.registerCallback(mExecutor, callback);
         try {
             new Thread(task).start();
             assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
         } finally {
             mManager.unregisterCallback(callback);
         }
     }

     // Helper for getting routes easily
     static Map<String, MediaRoute2Info> createRouteMap(List<MediaRoute2Info> routes) {
         Map<String, MediaRoute2Info> routeMap = new HashMap<>();
         for (MediaRoute2Info route : routes) {
             routeMap.put(route.getId(), route);
         }
         return routeMap;
     }
 }
	/*
	* Copyright 2019 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.mediaroutertest;

	import static android.media.MediaRoute2Info.PLAYBACK_VOLUME_FIXED;
	import static android.media.MediaRoute2Info.PLAYBACK_VOLUME_VARIABLE;

	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertNotEquals;
	import static org.junit.Assert.assertNotNull;
	import static org.junit.Assert.assertTrue;
	import static org.mockito.ArgumentMatchers.argThat;
	import static org.mockito.ArgumentMatchers.eq;
	import static org.mockito.Mockito.mock;
	import static org.mockito.Mockito.timeout;
	import static org.mockito.Mockito.verify;

	import android.content.Context;
	import android.content.Intent;
	import android.media.MediaRoute2Info;
	import android.media.MediaRouter2;
	import android.media.MediaRouter2Manager;
	import android.support.test.InstrumentationRegistry;
	import android.support.test.filters.SmallTest;
	import android.support.test.runner.AndroidJUnit4;
	import android.text.TextUtils;

	import org.junit.Assert;
	import org.junit.Before;
	import org.junit.Test;
	import org.junit.runner.RunWith;

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.concurrent.CountDownLatch;
	import java.util.concurrent.Executor;
	import java.util.concurrent.Executors;
	import java.util.concurrent.TimeUnit;
	import java.util.function.Predicate;

	@RunWith(AndroidJUnit4.class)
	@SmallTest
	public class MediaRouterManagerTest {
	private static final String TAG = "MediaRouterManagerTest";

	// Must be the same as SampleMediaRoute2ProviderService
	public static final String ROUTE_ID1 = "route_id1";
	public static final String ROUTE_NAME1 = "Sample Route 1";
	public static final String ROUTE_ID2 = "route_id2";
	public static final String ROUTE_NAME2 = "Sample Route 2";

	public static final String ROUTE_ID_SPECIAL_CATEGORY = "route_special_category";
	public static final String ROUTE_NAME_SPECIAL_CATEGORY = "Special Category Route";

	public static final int VOLUME_MAX = 100;
	public static final String ROUTE_ID_FIXED_VOLUME = "route_fixed_volume";
	public static final String ROUTE_NAME_FIXED_VOLUME = "Fixed Volume Route";
	public static final String ROUTE_ID_VARIABLE_VOLUME = "route_variable_volume";
	public static final String ROUTE_NAME_VARIABLE_VOLUME = "Variable Volume Route";

	public static final String ACTION_REMOVE_ROUTE =
	"com.android.mediarouteprovider.action_remove_route";

	public static final String CATEGORY_SAMPLE =
	"com.android.mediarouteprovider.CATEGORY_SAMPLE";
	public static final String CATEGORY_SPECIAL =
	"com.android.mediarouteprovider.CATEGORY_SPECIAL";

	private static final int TIMEOUT_MS = 5000;

	private Context mContext;
	private MediaRouter2Manager mManager;
	private MediaRouter2 mRouter2;
	private Executor mExecutor;
	private String mPackageName;

	private static final List<String> CONTROL_CATEGORIES_ALL = new ArrayList();
	private static final List<String> CONTROL_CATEGORIES_SPECIAL = new ArrayList();
	static {
	CONTROL_CATEGORIES_ALL.add(CATEGORY_SAMPLE);
	CONTROL_CATEGORIES_ALL.add(CATEGORY_SPECIAL);

	CONTROL_CATEGORIES_SPECIAL.add(CATEGORY_SPECIAL);
	}

	@Before
	public void setUp() throws Exception {
	mContext = InstrumentationRegistry.getTargetContext();
	mManager = MediaRouter2Manager.getInstance(mContext);
	mRouter2 = MediaRouter2.getInstance(mContext);
	//TODO: If we need to support thread pool executors, change this to thread pool executor.
	mExecutor = Executors.newSingleThreadExecutor();
	mPackageName = mContext.getPackageName();
	}

	//TODO: Move to a separate file
	@Test
	public void testMediaRoute2Info() {
	MediaRoute2Info routeInfo1 = new MediaRoute2Info.Builder("id", "name")
	.build();
	MediaRoute2Info routeInfo2 = new MediaRoute2Info.Builder(routeInfo1).build();

	MediaRoute2Info routeInfo3 = new MediaRoute2Info.Builder(routeInfo1)
	.setClientPackageName(mPackageName).build();

	assertEquals(routeInfo1, routeInfo2);
	assertNotEquals(routeInfo1, routeInfo3);
	}

	@Test
	public void testOnRoutesAdded() throws Exception {
	CountDownLatch latch = new CountDownLatch(1);
	MediaRouter2Manager.Callback callback = new MediaRouter2Manager.Callback() {
	@Override
	public void onRoutesAdded(List<MediaRoute2Info> routes) {
	assertTrue(routes.size() > 0);
	for (MediaRoute2Info route : routes) {
	if (route.getId().equals(ROUTE_ID1) && route.getName().equals(ROUTE_NAME1)) {
	latch.countDown();
	}
	}
	}
	};
	mManager.registerCallback(mExecutor, callback);

	assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));

	mManager.unregisterCallback(callback);
	}

	@Test
	public void testOnRoutesRemoved() throws Exception {
	MediaRouter2Manager.Callback mockCallback = mock(MediaRouter2Manager.Callback.class);
	mManager.registerCallback(mExecutor, mockCallback);

	MediaRouter2.Callback routerCallback = new MediaRouter2.Callback();
	mRouter2.registerCallback(mExecutor, routerCallback);

	Map<String, MediaRoute2Info> routes =
	waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

	CountDownLatch latch = new CountDownLatch(1);
	MediaRouter2Manager.Callback callback = new MediaRouter2Manager.Callback() {
	@Override
	public void onRoutesRemoved(List<MediaRoute2Info> routes) {
	assertTrue(routes.size() > 0);
	for (MediaRoute2Info route : routes) {
	if (route.getId().equals(ROUTE_ID2) && route.getName().equals(ROUTE_NAME2)) {
	latch.countDown();
	}
	}
	}
	};
	mManager.registerCallback(mExecutor, callback);

	//TODO: Figure out a more proper way to test.
	// (Control requests shouldn't be used in this way.)
	mRouter2.sendControlRequest(routes.get(ROUTE_ID2), new Intent(ACTION_REMOVE_ROUTE));
	assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));

	mRouter2.unregisterCallback(routerCallback);
	mManager.unregisterCallback(mockCallback);
	}

	/**
	* Tests if we get proper routes for application that has special control category.
	*/
	@Test
	public void testControlCategory() throws Exception {
	MediaRouter2Manager.Callback mockCallback = mock(MediaRouter2Manager.Callback.class);
	mManager.registerCallback(mExecutor, mockCallback);

	Map<String, MediaRoute2Info> routes =
	waitAndGetRoutesWithManager(CONTROL_CATEGORIES_SPECIAL);

	Assert.assertEquals(1, routes.size());
	Assert.assertNotNull(routes.get(ROUTE_ID_SPECIAL_CATEGORY));

	mManager.unregisterCallback(mockCallback);
	}

	/**
	* Tests if we get proper routes for application that has special control category.
	*/
	@Test
	public void testGetRoutes() throws Exception {
	MediaRouter2.Callback mockCallback = mock(MediaRouter2.Callback.class);
	mRouter2.registerCallback(mExecutor, mockCallback);

	Map<String, MediaRoute2Info> routes = waitAndGetRoutes(CONTROL_CATEGORIES_SPECIAL);

	Assert.assertEquals(1, routes.size());
	Assert.assertNotNull(routes.get(ROUTE_ID_SPECIAL_CATEGORY));

	mRouter2.unregisterCallback(mockCallback);
	}

	@Test
	public void testOnRouteSelected() throws Exception {
	MediaRouter2.Callback routerCallback = new MediaRouter2.Callback();
	MediaRouter2Manager.Callback managerCallback = mock(MediaRouter2Manager.Callback.class);

	mManager.registerCallback(mExecutor, managerCallback);
	mRouter2.registerCallback(mExecutor, routerCallback);

	Map<String, MediaRoute2Info> routes = waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

	MediaRoute2Info routeToSelect = routes.get(ROUTE_ID1);
	assertNotNull(routeToSelect);

	mManager.selectRoute(mPackageName, routeToSelect);
	verify(managerCallback, timeout(TIMEOUT_MS))
	.onRouteSelected(eq(mPackageName),
	argThat(route -> route != null && route.equals(routeToSelect)));

	mRouter2.unregisterCallback(routerCallback);
	mManager.unregisterCallback(managerCallback);
	}

	/**
	* Tests selecting and unselecting routes of a single provider.
	*/
	@Test
	public void testSingleProviderSelect() throws Exception {
	MediaRouter2.Callback routerCallback = mock(MediaRouter2.Callback.class);

	mRouter2.registerCallback(mExecutor, routerCallback);

	Map<String, MediaRoute2Info> routes = waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

	awaitOnRouteChangedManager(
	() -> mManager.selectRoute(mPackageName, routes.get(ROUTE_ID1)),
	ROUTE_ID1,
	route -> TextUtils.equals(route.getClientPackageName(), mPackageName));

	awaitOnRouteChangedManager(
	() -> mManager.selectRoute(mPackageName, routes.get(ROUTE_ID2)),
	ROUTE_ID2,
	route -> TextUtils.equals(route.getClientPackageName(), mPackageName));

	awaitOnRouteChangedManager(
	() -> mManager.unselectRoute(mPackageName),
	ROUTE_ID2,
	route -> TextUtils.equals(route.getClientPackageName(), null));

	mRouter2.unregisterCallback(routerCallback);
	}

	@Test
	public void testControlVolumeWithRouter() throws Exception {
	Map<String, MediaRoute2Info> routes = waitAndGetRoutes(CONTROL_CATEGORIES_ALL);

	MediaRoute2Info volRoute = routes.get(ROUTE_ID_VARIABLE_VOLUME);
	int originalVolume = volRoute.getVolume();
	int deltaVolume = (originalVolume == volRoute.getVolumeMax() ? -1 : 1);

	awaitOnRouteChanged(
	() -> mRouter2.requestUpdateVolume(volRoute, deltaVolume),
	ROUTE_ID_VARIABLE_VOLUME,
	(route -> route.getVolume() == originalVolume + deltaVolume));

	awaitOnRouteChanged(
	() -> mRouter2.requestSetVolume(volRoute, originalVolume),
	ROUTE_ID_VARIABLE_VOLUME,
	(route -> route.getVolume() == originalVolume));
	}

	@Test
	public void testControlVolumeWithManager() throws Exception {
	MediaRouter2.Callback mockCallback = mock(MediaRouter2.Callback.class);

	mRouter2.registerCallback(mExecutor, mockCallback);
	Map<String, MediaRoute2Info> routes = waitAndGetRoutesWithManager(CONTROL_CATEGORIES_ALL);

	MediaRoute2Info volRoute = routes.get(ROUTE_ID_VARIABLE_VOLUME);
	int originalVolume = volRoute.getVolume();
	int deltaVolume = (originalVolume == volRoute.getVolumeMax() ? -1 : 1);

	awaitOnRouteChangedManager(
	() -> mManager.requestUpdateVolume(volRoute, deltaVolume),
	ROUTE_ID_VARIABLE_VOLUME,
	(route -> route.getVolume() == originalVolume + deltaVolume));

	awaitOnRouteChangedManager(
	() -> mManager.requestSetVolume(volRoute, originalVolume),
	ROUTE_ID_VARIABLE_VOLUME,
	(route -> route.getVolume() == originalVolume));

	mRouter2.unregisterCallback(mockCallback);
	}

	@Test
	public void testVolumeHandling() throws Exception {
	MediaRouter2.Callback mockCallback = mock(MediaRouter2.Callback.class);
	mRouter2.registerCallback(mExecutor, mockCallback);
	Map<String, MediaRoute2Info> routes = waitAndGetRoutes(CONTROL_CATEGORIES_ALL);

	MediaRoute2Info fixedVolumeRoute = routes.get(ROUTE_ID_FIXED_VOLUME);
	MediaRoute2Info variableVolumeRoute = routes.get(ROUTE_ID_VARIABLE_VOLUME);

	assertEquals(PLAYBACK_VOLUME_FIXED, fixedVolumeRoute.getVolumeHandling());
	assertEquals(PLAYBACK_VOLUME_VARIABLE, variableVolumeRoute.getVolumeHandling());
	assertEquals(VOLUME_MAX, variableVolumeRoute.getVolumeMax());

	mRouter2.unregisterCallback(mockCallback);
	}

	Map<String, MediaRoute2Info> waitAndGetRoutes(List<String> controlCategories) throws Exception {
	CountDownLatch latch = new CountDownLatch(1);
	MediaRouter2.Callback callback = new MediaRouter2.Callback() {
	@Override
	public void onRoutesAdded(List<MediaRoute2Info> added) {
	if (added.size() > 0) latch.countDown();
	}
	};
	mRouter2.setControlCategories(controlCategories);
	mRouter2.registerCallback(mExecutor, callback);
	try {
	assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
	return createRouteMap(mRouter2.getRoutes());
	} finally {
	mRouter2.unregisterCallback(callback);
	}
	}

	Map<String, MediaRoute2Info> waitAndGetRoutesWithManager(List<String> controlCategories)
	throws Exception {
	CountDownLatch latch = new CountDownLatch(2);

	// A dummy callback is required to send control category info.
	MediaRouter2.Callback routerCallback = new MediaRouter2.Callback();
	MediaRouter2Manager.Callback managerCallback = new MediaRouter2Manager.Callback() {
	@Override
	public void onRoutesAdded(List<MediaRoute2Info> routes) {
	if (routes.size() > 0) {
	latch.countDown();
	}
	}
	@Override
	public void onControlCategoriesChanged(String packageName) {
	if (TextUtils.equals(mPackageName, packageName)) {
	latch.countDown();
	}
	}
	};
	mManager.registerCallback(mExecutor, managerCallback);
	mRouter2.setControlCategories(controlCategories);
	mRouter2.registerCallback(mExecutor, routerCallback);
	try {
	assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
	return createRouteMap(mManager.getAvailableRoutes(mPackageName));
	} finally {
	mRouter2.unregisterCallback(routerCallback);
	mManager.unregisterCallback(managerCallback);
	}
	}

	void awaitOnRouteChanged(Runnable task, String routeId,
	Predicate<MediaRoute2Info> predicate) throws Exception {
	CountDownLatch latch = new CountDownLatch(1);
	MediaRouter2.Callback callback = new MediaRouter2.Callback() {
	@Override
	public void onRoutesChanged(List<MediaRoute2Info> changed) {
	MediaRoute2Info route = createRouteMap(changed).get(routeId);
	if (route != null && predicate.test(route)) {
	latch.countDown();
	}
	}
	};
	mRouter2.registerCallback(mExecutor, callback);
	try {
	new Thread(task).start();
	assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
	} finally {
	mRouter2.unregisterCallback(callback);
	}
	}

	void awaitOnRouteChangedManager(Runnable task, String routeId,
	Predicate<MediaRoute2Info> predicate) throws Exception {
	CountDownLatch latch = new CountDownLatch(1);
	MediaRouter2Manager.Callback callback = new MediaRouter2Manager.Callback() {
	@Override
	public void onRoutesChanged(List<MediaRoute2Info> changed) {
	MediaRoute2Info route = createRouteMap(changed).get(routeId);
	if (route != null && predicate.test(route)) {
	latch.countDown();
	}
	}
	};
	mManager.registerCallback(mExecutor, callback);
	try {
	new Thread(task).start();
	assertTrue(latch.await(TIMEOUT_MS, TimeUnit.MILLISECONDS));
	} finally {
	mManager.unregisterCallback(callback);
	}
	}

	// Helper for getting routes easily
	static Map<String, MediaRoute2Info> createRouteMap(List<MediaRoute2Info> routes) {
	Map<String, MediaRoute2Info> routeMap = new HashMap<>();
	for (MediaRoute2Info route : routes) {
	routeMap.put(route.getId(), route);
	}
	return routeMap;
	}
	}