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Commit e23712c8 authored by Sal Savage's avatar Sal Savage Committed by Automerger Merge Worker
Browse files

Merge "Randomize media ID to correct lost audio focus" into main am: ee3bac73 

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3034176



Change-Id: Iadb6f04d2154b698f482dacecaed250e22fa4774
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 9a8e1c90 ee3bac73

android/app/src/com/android/bluetooth/avrcpcontroller/BrowseTree.java

+14 −1
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ import android.support.v4.media.MediaBrowserCompat.MediaItem; 
import android.util.Log;



import com.android.bluetooth.Utils;

import com.android.bluetooth.flags.Flags;



import com.google.common.annotations.VisibleForTesting;
@@ -80,10 +81,22 @@ public class BrowseTree { 
            mRootNode = new BrowseNode(new AvrcpItem.Builder()

                    .setUuid(ROOT).setTitle(ROOT).setBrowsable(true).build());

            mRootNode.setCached(true);

        } else {

        } else if (!Flags.randomizeDeviceLevelMediaIds()) {

            mRootNode = new BrowseNode(new AvrcpItem.Builder().setDevice(device)

                    .setUuid(ROOT + device.getAddress().toString())

                    .setTitle(Utils.getName(device)).setBrowsable(true).build());

        } else {

            mRootNode =

                    new BrowseNode(

                            new AvrcpItem.Builder()

                                    .setDevice(device)

                                    .setUuid(

                                            ROOT

                                                    + device.getAddress().toString()

                                                    + UUID.randomUUID().toString())

                                    .setTitle(Utils.getName(device))

                                    .setBrowsable(true)

                                    .build());

        }



        mRootNode.mBrowseScope = AvrcpControllerService.BROWSE_SCOPE_PLAYER_LIST;

android/app/tests/unit/src/com/android/bluetooth/avrcpcontroller/AvrcpControllerServiceTest.java

+58 −3
Original line number Diff line number Diff line
@@ -30,7 +30,9 @@ import android.bluetooth.BluetoothDevice; 
import android.bluetooth.BluetoothProfile;

import android.content.Context;

import android.content.Intent;

import android.content.res.Resources;

import android.media.AudioManager;

import android.platform.test.flag.junit.SetFlagsRule;

import android.support.v4.media.session.PlaybackStateCompat;



import androidx.test.InstrumentationRegistry;
@@ -38,9 +40,12 @@ import androidx.test.filters.MediumTest; 
import androidx.test.rule.ServiceTestRule;

import androidx.test.runner.AndroidJUnit4;



import com.android.bluetooth.R;

import com.android.bluetooth.TestUtils;

import com.android.bluetooth.a2dpsink.A2dpSinkService;

import com.android.bluetooth.avrcpcontroller.BluetoothMediaBrowserService.BrowseResult;

import com.android.bluetooth.btservice.AdapterService;

import com.android.bluetooth.flags.Flags;



import org.junit.After;

import org.junit.Before;
@@ -61,6 +66,11 @@ import java.util.List; 
public class AvrcpControllerServiceTest {

    private static final String REMOTE_DEVICE_ADDRESS = "00:00:00:00:00:00";

    private static final byte[] REMOTE_DEVICE_ADDRESS_AS_ARRAY = new byte[]{0, 0, 0, 0, 0, 0};

    private static final String REMOTE_DEVICE_ADDRESS_2 = "11:11:11:11:11:11";

    private static final byte[] REMOTE_DEVICE_ADDRESS_AS_ARRAY_2 =

            new byte[] {11, 11, 11, 11, 11, 11};



    @Rule public final SetFlagsRule mSetFlagsRule = new SetFlagsRule();



    private AvrcpControllerService mService = null;

    private BluetoothAdapter mAdapter = null;
@@ -70,11 +80,18 @@ public class AvrcpControllerServiceTest { 


    @Rule public MockitoRule mockitoRule = MockitoJUnit.rule();



    @Mock private A2dpSinkService mA2dpSinkService;

    @Mock private AdapterService mAdapterService;

    @Mock private AvrcpControllerStateMachine mStateMachine;

    @Mock private AvrcpControllerStateMachine mStateMachine2;

    @Mock private AvrcpControllerNativeInterface mNativeInterface;



    @Mock private Resources mMockResources;



    private BluetoothDevice mRemoteDevice;

    private BluetoothDevice mRemoteDevice2;



    @Mock private AvrcpControllerStateMachine mAvrcpStateMachine;



    @Before

    public void setUp() throws Exception {
@@ -86,17 +103,29 @@ public class AvrcpControllerServiceTest { 
        // Try getting the Bluetooth adapter

        mAdapter = BluetoothAdapter.getDefaultAdapter();

        assertThat(mAdapter).isNotNull();

        // Set a mock A2dpSinkService for audio focus calls

        A2dpSinkService.setA2dpSinkService(mA2dpSinkService);

        when(mMockResources.getBoolean(R.bool.a2dp_sink_automatically_request_audio_focus))

                .thenReturn(true);



        mRemoteDevice = mAdapter.getRemoteDevice(REMOTE_DEVICE_ADDRESS);

        mService.mDeviceStateMap.put(mRemoteDevice, mStateMachine);

        final Intent bluetoothBrowserMediaServiceStartIntent =

                TestUtils.prepareIntentToStartBluetoothBrowserMediaService();

        mBluetoothBrowserMediaServiceTestRule.startService(bluetoothBrowserMediaServiceStartIntent);



        // Set up device and state machine under test

        mRemoteDevice2 = mAdapter.getRemoteDevice(REMOTE_DEVICE_ADDRESS_2);

        mService.mDeviceStateMap.put(mRemoteDevice2, mStateMachine2);



        when(mA2dpSinkService.setActiveDevice(any(BluetoothDevice.class))).thenReturn(true);

    }



    @After

    public void tearDown() throws Exception {

        mService.stop();

        AvrcpControllerNativeInterface.setInstance(null);

        A2dpSinkService.setA2dpSinkService(null);

        mService = AvrcpControllerService.getAvrcpControllerService();

        assertThat(mService).isNull();

        TestUtils.clearAdapterService(mAdapterService);
@@ -142,6 +171,7 @@ public class AvrcpControllerServiceTest { 


    @Test

    public void setActiveDevice_whenA2dpSinkServiceIsNotInitailized_returnsFalse() {

        A2dpSinkService.setA2dpSinkService(null);

        assertThat(mService.setActiveDevice(mRemoteDevice)).isFalse();



        assertThat(mService.getActiveDevice()).isNull();
@@ -465,7 +495,8 @@ public class AvrcpControllerServiceTest { 


        mService.handleGetPlayerItemsRsp(mRemoteDevice, items);



        verify(mStateMachine).sendMessage(

        verify(mStateMachine)

                .sendMessage(

                        eq(AvrcpControllerStateMachine.MESSAGE_PROCESS_GET_PLAYER_ITEMS),

                        eq(items));

    }
@@ -487,4 +518,28 @@ public class AvrcpControllerServiceTest { 
        mService.onAudioFocusStateChanged(AudioManager.AUDIOFOCUS_LOSS);

        assertThat(BluetoothMediaBrowserService.isActive()).isFalse();

    }



    /**

     * Connect first device and check that it is the active device. Pair a second device, then

     * disconnect and repair this known second device. Confirm that audio focus is maintained by

     * first device by checking that it has remained as the active device.

     */

    @Test

    public void testActiveDeviceMaintainsAudioFocusWhenOtherDeviceConnects_audioFocusMaintained() {

        mSetFlagsRule.enableFlags(Flags.FLAG_RANDOMIZE_DEVICE_LEVEL_MEDIA_IDS);



        mService.onConnectionStateChanged(true, true, mRemoteDevice);

        // check set active device is called

        verify(mA2dpSinkService).setActiveDevice(mRemoteDevice);

        when(mA2dpSinkService.getActiveDevice()).thenReturn(mRemoteDevice);



        // connect another phone

        mService.onConnectionStateChanged(true, true, mRemoteDevice2);

        verify(mA2dpSinkService, times(0)).setActiveDevice(mRemoteDevice2);



        // disconnect and reconnect other phone

        mService.onConnectionStateChanged(false, false, mRemoteDevice2);

        mService.onConnectionStateChanged(true, true, mRemoteDevice2);

        verify(mA2dpSinkService, times(0)).setActiveDevice(mRemoteDevice2);

    }

}

android/app/tests/unit/src/com/android/bluetooth/avrcpcontroller/AvrcpControllerStateMachineTest.java

+46 −34
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ package com.android.bluetooth.avrcpcontroller; 


import static android.Manifest.permission.BLUETOOTH_CONNECT;



import static com.google.common.truth.Truth.assertThat;



import static org.mockito.Mockito.*;



import android.bluetooth.BluetoothAdapter;
@@ -29,6 +31,7 @@ import android.content.res.Resources; 
import android.media.AudioManager;

import android.os.Bundle;

import android.os.Looper;

import android.platform.test.flag.junit.SetFlagsRule;

import android.support.v4.media.MediaMetadataCompat;

import android.support.v4.media.session.MediaControllerCompat;

import android.support.v4.media.session.MediaSessionCompat;
@@ -44,6 +47,7 @@ import com.android.bluetooth.R; 
import com.android.bluetooth.TestUtils;

import com.android.bluetooth.a2dpsink.A2dpSinkService;

import com.android.bluetooth.btservice.AdapterService;

import com.android.bluetooth.flags.Flags;



import org.hamcrest.core.IsInstanceOf;

import org.junit.After;
@@ -68,6 +72,10 @@ public class AvrcpControllerStateMachineTest { 
    private static final int CONNECT_TIMEOUT_TEST_MILLIS = 1000;

    private static final int KEY_DOWN = 0;

    private static final int KEY_UP = 1;

    private static final int UUID_START = 0;

    private static final int UUID_LENGTH = 25;



    @Rule public final SetFlagsRule mSetFlagsRule = new SetFlagsRule();



    private BluetoothAdapter mAdapter;
@@ -135,6 +143,7 @@ public class AvrcpControllerStateMachineTest { 
        // Set up device and state machine under test

        mTestDevice = mAdapter.getRemoteDevice(mTestAddress);

        mAvrcpStateMachine = makeStateMachine(mTestDevice);



        setActiveDevice(mTestDevice);

    }
@@ -461,6 +470,27 @@ public class AvrcpControllerStateMachineTest { 
        verify(mAvrcpControllerService).removeStateMachine(eq(mAvrcpStateMachine));

    }



    /** Get the root of the device */

    @Test

    public void testGetDeviceRootNode_flagRandomDeviceIdDisabled_rootNodeMatchesUuidFormat() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();

        // Get the root of the device

        BrowseTree.BrowseNode results = mAvrcpStateMachine.findNode(rootName);

        Assert.assertEquals(rootName, results.getID());

    }



    /** Get the root of the device */

    @Test

    public void testGetDeviceRootNode_flagRandomDeviceIdEnabled_rootNodeMatchesUuidFormat() {

        mSetFlagsRule.enableFlags(Flags.FLAG_RANDOMIZE_DEVICE_LEVEL_MEDIA_IDS);

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();

        // Get the root of the device

        BrowseTree.BrowseNode results = mAvrcpStateMachine.mBrowseTree.mRootNode;

        assertThat((results.getID()).substring(UUID_START, UUID_LENGTH)).isEqualTo(rootName);

    }



    /**

     * Test to make sure the state machine is tracking the correct device

     */
@@ -716,12 +746,8 @@ public class AvrcpControllerStateMachineTest { 
    @FlakyTest

    public void testBrowsingCommands() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();

        final String playerName = "Player 1";



        //Get the root of the device

        BrowseTree.BrowseNode results = mAvrcpStateMachine.findNode(rootName);

        Assert.assertEquals(rootName, results.getID());

        BrowseTree.BrowseNode results = mAvrcpStateMachine.mBrowseTree.mRootNode;



        //Request fetch the list of players

        BrowseTree.BrowseNode playerNodes = mAvrcpStateMachine.findNode(results.getID());
@@ -764,14 +790,13 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testAvailablePlayersChanged() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();



        // Send an available players have changed event

        mAvrcpStateMachine.sendMessage(

                AvrcpControllerStateMachine.MESSAGE_PROCESS_AVAILABLE_PLAYER_CHANGED);



        // Verify we've uncached our browse root and made the call to fetch new players

        Assert.assertFalse(mAvrcpStateMachine.findNode(rootName).isCached());

        Assert.assertFalse(mAvrcpStateMachine.mBrowseTree.mRootNode.isCached());

        verify(mNativeInterface, timeout(ASYNC_CALL_TIMEOUT_MILLIS).times(1))

                .getPlayerList(eq(mTestAddress), eq(0), eq(19));

    }
@@ -783,7 +808,6 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testAvailablePlayersReceived_AddressedPlayerExists() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();



        // Set an addressed player that will be in the available players set. A new player triggers

        // a now playing list download, so send back nothing.
@@ -801,7 +825,7 @@ public class AvrcpControllerStateMachineTest { 
                AvrcpControllerStateMachine.MESSAGE_PROCESS_AVAILABLE_PLAYER_CHANGED);



        // Verify we've uncached our browse root and made the call to fetch new players

        Assert.assertFalse(mAvrcpStateMachine.findNode(rootName).isCached());

        Assert.assertFalse(mAvrcpStateMachine.mBrowseTree.mRootNode.isCached());

        verify(mNativeInterface, timeout(ASYNC_CALL_TIMEOUT_MILLIS).times(1))

                .getPlayerList(eq(mTestAddress), eq(0), eq(19));
@@ -821,7 +845,7 @@ public class AvrcpControllerStateMachineTest { 


        // Verify we processed the first players properly. Note the addressed player should always

        // be in the available player set.

        Assert.assertTrue(mAvrcpStateMachine.findNode(rootName).isCached());

        Assert.assertTrue(mAvrcpStateMachine.mBrowseTree.mRootNode.isCached());

        SparseArray<AvrcpPlayer> players = mAvrcpStateMachine.getAvailablePlayers();

        Assert.assertTrue(players.contains(mAvrcpStateMachine.getAddressedPlayerId()));

        Assert.assertEquals(testPlayers.size(), players.size());
@@ -846,14 +870,13 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testAvailablePlayersReceived_AddressedPlayerDoesNotExist() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();



        // Send an available players have changed event

        mAvrcpStateMachine.sendMessage(

                AvrcpControllerStateMachine.MESSAGE_PROCESS_AVAILABLE_PLAYER_CHANGED);



        // Verify we've uncached our browse root and made the call to fetch new players

        Assert.assertFalse(mAvrcpStateMachine.findNode(rootName).isCached());

        Assert.assertFalse(mAvrcpStateMachine.mBrowseTree.mRootNode.isCached());

        verify(mNativeInterface, timeout(ASYNC_CALL_TIMEOUT_MILLIS).times(1))

                .getPlayerList(eq(mTestAddress), eq(0), eq(19));
@@ -874,7 +897,7 @@ public class AvrcpControllerStateMachineTest { 
        // Verify we processed the players properly. Note the addressed player is currently the

        // default player and is not in the available player set sent. This means we'll have an

        // extra player at ID -1.

        Assert.assertTrue(mAvrcpStateMachine.findNode(rootName).isCached());

        Assert.assertTrue(mAvrcpStateMachine.mBrowseTree.mRootNode.isCached());

        SparseArray<AvrcpPlayer> players = mAvrcpStateMachine.getAvailablePlayers();

        Assert.assertTrue(players.contains(mAvrcpStateMachine.getAddressedPlayerId()));

        Assert.assertEquals(testPlayers.size() + 1, players.size());
@@ -899,11 +922,8 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testAddressedPlayerChangedToNewKnownPlayer() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();



        // Get the root of the device

        BrowseTree.BrowseNode results = mAvrcpStateMachine.findNode(rootName);

        Assert.assertEquals(rootName, results.getID());

        BrowseTree.BrowseNode results = mAvrcpStateMachine.mBrowseTree.mRootNode;



        //Request fetch the list of players

        BrowseTree.BrowseNode playerNodes = mAvrcpStateMachine.findNode(results.getID());
@@ -962,11 +982,9 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testAddressedPlayerChangedToUnknownPlayer() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();



        // Get the root of the device

        BrowseTree.BrowseNode rootNode = mAvrcpStateMachine.findNode(rootName);

        Assert.assertEquals(rootName, rootNode.getID());

        BrowseTree.BrowseNode rootNode = mAvrcpStateMachine.mBrowseTree.mRootNode;



        //Request fetch the list of players

        BrowseTree.BrowseNode playerNodes = mAvrcpStateMachine.findNode(rootNode.getID());
@@ -1009,7 +1027,6 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testAddressedPlayerChangedToSamePlayerId() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();



        // Set the addressed player so we can change to the same one

        mAvrcpStateMachine.sendMessage(
@@ -1022,8 +1039,7 @@ public class AvrcpControllerStateMachineTest { 
        TestUtils.waitForLooperToFinishScheduledTask(mAvrcpStateMachine.getHandler().getLooper());



        // Get the root of the device

        BrowseTree.BrowseNode rootNode = mAvrcpStateMachine.findNode(rootName);

        Assert.assertEquals(rootName, rootNode.getID());

        BrowseTree.BrowseNode rootNode = mAvrcpStateMachine.mBrowseTree.mRootNode;



        //Request fetch the list of players

        BrowseTree.BrowseNode playerNodes = mAvrcpStateMachine.findNode(rootNode.getID());
@@ -1080,12 +1096,10 @@ public class AvrcpControllerStateMachineTest { 
    @Test

    public void testPlayWhileBrowsing() {

        setUpConnectedState(true, true);

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();

        final String playerName = "Player 1";



        // Get the root of the device

        BrowseTree.BrowseNode results = mAvrcpStateMachine.findNode(rootName);

        Assert.assertEquals(rootName, results.getID());

        BrowseTree.BrowseNode results = mAvrcpStateMachine.mBrowseTree.mRootNode;



        //Request fetch the list of players

        BrowseTree.BrowseNode playerNodes = mAvrcpStateMachine.findNode(results.getID());
@@ -2083,12 +2097,11 @@ public class AvrcpControllerStateMachineTest { 
     */

    @Test

    public void testBrowseRequestWhileDisconnected_requestDropped() {

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();

        setUpConnectedState(true, false);

        sendAudioFocusUpdate(AudioManager.AUDIOFOCUS_GAIN);

        clearInvocations(mAvrcpControllerService);

        clearInvocations(mNativeInterface);

        BrowseTree.BrowseNode deviceRoot = mAvrcpStateMachine.findNode(rootName);

        BrowseTree.BrowseNode deviceRoot = mAvrcpStateMachine.mBrowseTree.mRootNode;

        mAvrcpStateMachine.requestContents(deviceRoot);

        TestUtils.waitForLooperToFinishScheduledTask(mAvrcpStateMachine.getHandler().getLooper());

        verifyNoMoreInteractions(mAvrcpControllerService);
@@ -2101,12 +2114,11 @@ public class AvrcpControllerStateMachineTest { 
     */

    @Test

    public void testBrowseRequestWhileDisconnectedThenRequestWhileConnected_secondRequestSent() {

        final String rootName = "__ROOT__" + mTestDevice.getAddress().toString();

        setUpConnectedState(true, false);

        sendAudioFocusUpdate(AudioManager.AUDIOFOCUS_GAIN);

        clearInvocations(mAvrcpControllerService);

        clearInvocations(mNativeInterface);

        BrowseTree.BrowseNode deviceRoot = mAvrcpStateMachine.findNode(rootName);

        BrowseTree.BrowseNode deviceRoot = mAvrcpStateMachine.mBrowseTree.mRootNode;

        mAvrcpStateMachine.requestContents(deviceRoot);

        // issues a player list fetch

        mAvrcpStateMachine.connect(StackEvent.connectionStateChanged(true, true));

android/app/tests/unit/src/com/android/bluetooth/avrcpcontroller/BrowseTreeTest.java

+33 −0
Original line number Diff line number Diff line
@@ -20,10 +20,13 @@ import static com.google.common.truth.Truth.assertThat; 


import android.bluetooth.BluetoothAdapter;

import android.bluetooth.BluetoothDevice;

import android.platform.test.flag.junit.SetFlagsRule;



import com.android.bluetooth.avrcpcontroller.BrowseTree.BrowseNode;

import com.android.bluetooth.flags.Flags;



import org.junit.Before;

import org.junit.Rule;

import org.junit.Test;



import java.util.Set;
@@ -33,6 +36,8 @@ public class BrowseTreeTest { 
    private static final String TEST_HANDLE = "test_handle";

    private static final String TEST_NODE_ID = "test_node_id";



    @Rule public final SetFlagsRule mSetFlagsRule = new SetFlagsRule();



    private final byte[] mTestAddress = new byte[]{01, 01, 01, 01, 01, 01};

    private BluetoothAdapter mAdapter;

    private BluetoothDevice mTestDevice = null;
@@ -89,6 +94,18 @@ public class BrowseTreeTest { 
        assertThat(browseTree.mRootNode.getChildrenCount()).isEqualTo(1);

    }



    @Test

    public void sameDeviceDifferentBrowseTrees_uniqueMediaIds() {

        mSetFlagsRule.enableFlags(Flags.FLAG_RANDOMIZE_DEVICE_LEVEL_MEDIA_IDS);

        BrowseTree browseTree1 = new BrowseTree(mTestDevice);

        BrowseTree browseTree2 = new BrowseTree(mTestDevice);



        String mediaId1 = browseTree1.mRootNode.getID();

        String mediaId2 = browseTree2.mRootNode.getID();



        assertThat(mediaId1).isNotEqualTo(mediaId2);

    }



    @Test

    public void findBrowseNodeByIDForRoot() {

        BrowseTree browseTree = new BrowseTree(null);
@@ -102,6 +119,14 @@ public class BrowseTreeTest { 
        assertThat(browseTree.findBrowseNodeByID(deviceId)).isEqualTo(browseTree.mRootNode);

    }



    @Test

    public void findBrowseNodeByIDForDevice_flagEnabled() {

        mSetFlagsRule.enableFlags(Flags.FLAG_RANDOMIZE_DEVICE_LEVEL_MEDIA_IDS);

        BrowseTree browseTree = new BrowseTree(mTestDevice);

        final String deviceId = browseTree.mRootNode.getID();

        assertThat(browseTree.findBrowseNodeByID(deviceId)).isEqualTo(browseTree.mRootNode);

    }



    @Test

    public void findBrowseNodeByIDForIllegalId() {

        BrowseTree browseTree = new BrowseTree(mTestDevice);
@@ -117,6 +142,14 @@ public class BrowseTreeTest { 
        assertThat(browseTree.getCurrentBrowsedFolder()).isEqualTo(browseTree.mNowPlayingNode);

    }



    @Test

    public void findBrowseNodeByIDForDevice_withRandomDeviceID_nodeIsFound() {

        mSetFlagsRule.enableFlags(Flags.FLAG_RANDOMIZE_DEVICE_LEVEL_MEDIA_IDS);

        BrowseTree browseTree = new BrowseTree(mTestDevice);

        final String deviceId = browseTree.mRootNode.getID();

        assertThat(browseTree.findBrowseNodeByID(deviceId)).isEqualTo(browseTree.mRootNode);

    }



    @Test

    public void setAndGetCurrentBrowsedPlayer() {

        BrowseTree browseTree = new BrowseTree(mTestDevice);