Add SliceWorker for remote volume controller

Also update some methods to fix issues in panel.

Bug: 126199571
Test: RunSettingsRoboTests
Change-Id: I9b93ae594d41cb71b984b06267161455373bf121

tests/robotests/src/com/android/settings/notification/RemoteVolumePreferenceControllerTest.java

@@ -19,10 +19,13 @@ package com.android.settings.notification;
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import android.content.Context;
+import android.media.session.ControllerLink;
 import android.media.session.MediaController;
+import android.media.session.MediaSession;
 import android.media.session.MediaSessionManager;
 
 import com.android.settings.R;
@@ -40,26 +43,41 @@ import java.util.List;
 
 @RunWith(RobolectricTestRunner.class)
 public class RemoteVolumePreferenceControllerTest {
+    private static final int CURRENT_POS = 5;
+    private static final int MAX_POS = 10;
 
     @Mock
     private MediaSessionManager mMediaSessionManager;
     @Mock
     private MediaController mMediaController;
+    @Mock
+    private ControllerLink.ControllerStub mStub;
+    @Mock
+    private ControllerLink.ControllerStub mStub2;
+    private MediaSession.Token mToken;
+    private MediaSession.Token mToken2;
     private RemoteVolumePreferenceController mController;
     private Context mContext;
     private List<MediaController> mActiveSessions;
+    private MediaController.PlaybackInfo mPlaybackInfo;
 
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
+
         mContext = spy(RuntimeEnvironment.application);
         when(mContext.getSystemService(MediaSessionManager.class)).thenReturn(mMediaSessionManager);
         mActiveSessions = new ArrayList<>();
         mActiveSessions.add(mMediaController);
         when(mMediaSessionManager.getActiveSessions(null)).thenReturn(
                 mActiveSessions);
+        mToken = new MediaSession.Token(new ControllerLink(mStub));
+        mToken2 = new MediaSession.Token(new ControllerLink(mStub2));
 
         mController = new RemoteVolumePreferenceController(mContext);
+        mPlaybackInfo = new MediaController.PlaybackInfo(
+                MediaController.PlaybackInfo.PLAYBACK_TYPE_REMOTE, 0, MAX_POS, CURRENT_POS, null);
+        when(mMediaController.getPlaybackInfo()).thenReturn(mPlaybackInfo);
     }
 
     @Test
@@ -88,4 +106,92 @@ public class RemoteVolumePreferenceControllerTest {
         assertThat(mController.getAudioStream()).isEqualTo(
                 RemoteVolumePreferenceController.REMOTE_VOLUME);
     }
+
+    @Test
+    public void getSliderPosition_controllerNull_returnZero() {
+        mController.mMediaController = null;
+
+        assertThat(mController.getSliderPosition()).isEqualTo(0);
+    }
+
+    @Test
+    public void getSliderPosition_controllerExists_returnValue() {
+        mController.mMediaController = mMediaController;
+
+        assertThat(mController.getSliderPosition()).isEqualTo(CURRENT_POS);
+    }
+
+    @Test
+    public void getMaxSteps_controllerNull_returnZero() {
+        mController.mMediaController = null;
+
+        assertThat(mController.getMaxSteps()).isEqualTo(0);
+    }
+
+    @Test
+    public void getMaxSteps_controllerExists_returnValue() {
+        mController.mMediaController = mMediaController;
+
+        assertThat(mController.getMaxSteps()).isEqualTo(MAX_POS);
+    }
+
+    @Test
+    public void setSliderPosition_controllerNull_returnFalse() {
+        mController.mMediaController = null;
+
+        assertThat(mController.setSliderPosition(CURRENT_POS)).isFalse();
+    }
+
+    @Test
+    public void setSliderPosition_controllerExists_returnTrue() {
+        mController.mMediaController = mMediaController;
+
+        assertThat(mController.setSliderPosition(CURRENT_POS)).isTrue();
+        verify(mMediaController).setVolumeTo(CURRENT_POS, 0 /* flags */);
+    }
+
+    @Test
+    public void onRemoteUpdate_firstToken_updateTokenAndPreference() {
+        mController.mPreference = new VolumeSeekBarPreference(mContext);
+        mController.mActiveToken = null;
+
+        mController.mCallbacks.onRemoteUpdate(mToken, "token", mPlaybackInfo);
+
+        assertThat(mController.mActiveToken).isEqualTo(mToken);
+        assertThat(mController.mPreference.isVisible()).isTrue();
+        assertThat(mController.mPreference.getMax()).isEqualTo(MAX_POS);
+        assertThat(mController.mPreference.getProgress()).isEqualTo(CURRENT_POS);
+    }
+
+    @Test
+    public void onRemoteUpdate_differentToken_doNothing() {
+        mController.mActiveToken = mToken;
+
+        mController.mCallbacks.onRemoteUpdate(mToken2, "token2", mPlaybackInfo);
+
+        assertThat(mController.mActiveToken).isEqualTo(mToken);
+    }
+
+    @Test
+    public void onRemoteRemoved_tokenRemoved_setInvisible() {
+        mController.mPreference = new VolumeSeekBarPreference(mContext);
+        mController.mActiveToken = mToken;
+
+        mController.mCallbacks.onRemoteRemoved(mToken);
+
+        assertThat(mController.mActiveToken).isNull();
+        assertThat(mController.mPreference.isVisible()).isFalse();
+    }
+
+    @Test
+    public void onRemoteVolumeChanged_volumeChanged_updateIt() {
+        mController.mPreference = new VolumeSeekBarPreference(mContext);
+        mController.mPreference.setMax(MAX_POS);
+        mController.mActiveToken = mToken;
+        mController.mMediaController = mMediaController;
+
+        mController.mCallbacks.onRemoteVolumeChanged(mToken, 0 /* flags */);
+
+        assertThat(mController.mPreference.getProgress()).isEqualTo(CURRENT_POS);
+    }
 }