content: /*
   * Copyright (C) 2021 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.google.android.exoplayer2;
  
  import static com.google.android.exoplayer2.util.MimeTypes.AUDIO_AAC;
  import static com.google.android.exoplayer2.util.MimeTypes.VIDEO_H264;
  import static com.google.common.truth.Truth.assertThat;
  
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.source.TrackGroup;
  import com.google.common.collect.ImmutableList;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Unit test for {@link Tracks}. */
  @RunWith(AndroidJUnit4.class)
  public class TracksTest {
  
    @Test
    public void roundTripViaBundle_ofEmptyTracks_yieldsEqualInstance() {
      Tracks before = Tracks.EMPTY;
      Tracks after = Tracks.CREATOR.fromBundle(before.toBundle());
      assertThat(after).isEqualTo(before);
    }
  
    @Test
    public void roundTripViaBundle_ofTracks_yieldsEqualInstance() {
      Tracks before =
          new Tracks(
              ImmutableList.of(
                  new Tracks.Group(
                      new TrackGroup(new Format.Builder().setSampleMimeType(AUDIO_AAC).build()),
                      /* adaptiveSupported= */ false,
                      new int[] {C.FORMAT_EXCEEDS_CAPABILITIES},
                      /* trackSelected= */ new boolean[] {true}),
                  new Tracks.Group(
                      new TrackGroup(
                          new Format.Builder().setSampleMimeType(VIDEO_H264).build(),
                          new Format.Builder().setSampleMimeType(VIDEO_H264).build()),
                      /* adaptiveSupported= */ true,
                      new int[] {C.FORMAT_UNSUPPORTED_DRM, C.FORMAT_UNSUPPORTED_TYPE},
                      /* trackSelected= */ new boolean[] {false, true})));
      Tracks after = Tracks.CREATOR.fromBundle(before.toBundle());
      assertThat(after).isEqualTo(before);
    }
  
    @Test
    public void getters_withoutTrack_returnExpectedValues() {
      Tracks tracks = new Tracks(ImmutableList.of());
  
      assertThat(tracks.containsType(C.TRACK_TYPE_AUDIO)).isFalse();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_AUDIO)).isFalse();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_AUDIO, /* allowExceedsCapabilities= */ true))
          .isFalse();
      assertThat(tracks.isTypeSelected(C.TRACK_TYPE_AUDIO)).isFalse();
      ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
      assertThat(trackGroups).isEmpty();
    }
  
    @Test
    public void emptyStaticInstance_isEmpty() {
      Tracks tracks = Tracks.EMPTY;
  
      assertThat(tracks.getGroups()).isEmpty();
      assertThat(tracks).isEqualTo(new Tracks(ImmutableList.of()));
    }
  
    @Test
    public void getters_ofComplexTracks_returnExpectedValues() {
      Tracks.Group trackGroup0 =
          new Tracks.Group(
              new TrackGroup(new Format.Builder().setSampleMimeType(AUDIO_AAC).build()),
              /* adaptiveSupported= */ false,
              new int[] {C.FORMAT_EXCEEDS_CAPABILITIES},
              /* trackSelected= */ new boolean[] {false});
      Tracks.Group trackGroup1 =
          new Tracks.Group(
              new TrackGroup(
                  new Format.Builder().setSampleMimeType(VIDEO_H264).build(),
                  new Format.Builder().setSampleMimeType(VIDEO_H264).build()),
              /* adaptiveSupported= */ true,
              new int[] {C.FORMAT_UNSUPPORTED_DRM, C.FORMAT_HANDLED},
              /* trackSelected= */ new boolean[] {false, true});
      Tracks tracks = new Tracks(ImmutableList.of(trackGroup0, trackGroup1));
  
      assertThat(tracks.containsType(C.TRACK_TYPE_AUDIO)).isTrue();
      assertThat(tracks.containsType(C.TRACK_TYPE_VIDEO)).isTrue();
      assertThat(tracks.containsType(C.TRACK_TYPE_TEXT)).isFalse();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_AUDIO)).isFalse();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_VIDEO)).isTrue();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_TEXT)).isFalse();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_AUDIO, /* allowExceedsCapabilities= */ true))
          .isTrue();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_VIDEO, /* allowExceedsCapabilities= */ true))
          .isTrue();
      assertThat(tracks.isTypeSupported(C.TRACK_TYPE_TEXT, /* allowExceedsCapabilities= */ true))
          .isFalse();
      assertThat(tracks.isTypeSelected(C.TRACK_TYPE_AUDIO)).isFalse();
      assertThat(tracks.isTypeSelected(C.TRACK_TYPE_VIDEO)).isTrue();
      ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
      assertThat(trackGroups).hasSize(2);
      assertThat(trackGroups.get(0)).isSameInstanceAs(trackGroup0);
      assertThat(trackGroups.get(1)).isSameInstanceAs(trackGroup1);
      assertThat(trackGroups.get(0).isTrackSupported(0)).isFalse();
      assertThat(trackGroups.get(1).isTrackSupported(0)).isFalse();
      assertThat(trackGroups.get(1).isTrackSupported(1)).isTrue();
      assertThat(trackGroups.get(0).getTrackSupport(0)).isEqualTo(C.FORMAT_EXCEEDS_CAPABILITIES);
      assertThat(trackGroups.get(1).getTrackSupport(0)).isEqualTo(C.FORMAT_UNSUPPORTED_DRM);
      assertThat(trackGroups.get(1).getTrackSupport(1)).isEqualTo(C.FORMAT_HANDLED);
      assertThat(trackGroups.get(0).isTrackSelected(0)).isFalse();
      assertThat(trackGroups.get(1).isTrackSelected(0)).isFalse();
      assertThat(trackGroups.get(1).isTrackSelected(1)).isTrue();
      assertThat(trackGroups.get(0).getType()).isEqualTo(C.TRACK_TYPE_AUDIO);
      assertThat(trackGroups.get(1).getType()).isEqualTo(C.TRACK_TYPE_VIDEO);
    }
  
    /**
     * Tests that {@link Tracks.Group#isAdaptiveSupported} returns false if the group only contains a
     * single track, even if true is passed to the constructor.
     */
    @Test
    public void groupWithSingleTrack_isNotAdaptive() {
      Tracks.Group trackGroup =
          new Tracks.Group(
              new TrackGroup(new Format.Builder().setSampleMimeType(AUDIO_AAC).build()),
              /* adaptiveSupported= */ true,
              new int[] {C.FORMAT_EXCEEDS_CAPABILITIES},
              /* trackSelected= */ new boolean[] {false});
      assertThat(trackGroup.isAdaptiveSupported()).isFalse();
    }
  }
  