content: /*
   * Copyright (C) 2017 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.source;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import android.net.Uri;
  import android.util.Pair;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.C;
  import com.google.android.exoplayer2.MediaItem;
  import com.google.android.exoplayer2.Timeline.Period;
  import com.google.android.exoplayer2.Timeline.Window;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Unit test for {@link SinglePeriodTimeline}. */
  @RunWith(AndroidJUnit4.class)
  public final class SinglePeriodTimelineTest {
  
    private Window window;
    private Period period;
  
    @Before
    public void setUp() throws Exception {
      window = new Window();
      period = new Period();
    }
  
    @Test
    public void getPeriodPositionDynamicWindowUnknownDuration() {
      SinglePeriodTimeline timeline =
          new SinglePeriodTimeline(
              /* durationUs= */ C.TIME_UNSET,
              /* isSeekable= */ false,
              /* isDynamic= */ true,
              /* isLive= */ true,
              /* manifest= */ null,
              MediaItem.fromUri(Uri.EMPTY));
      // Should return null with any positive position projection.
      Pair<Object, Long> positionUs =
          timeline.getPeriodPositionUs(
              window,
              period,
              /* windowIndex= */ 0,
              /* windowPositionUs= */ C.TIME_UNSET,
              /* defaultPositionProjectionUs= */ 1);
      assertThat(positionUs).isNull();
      // Should return (0, 0) without a position projection.
      positionUs =
          timeline.getPeriodPositionUs(
              window,
              period,
              /* windowIndex= */ 0,
              /* windowPositionUs= */ C.TIME_UNSET,
              /* defaultPositionProjectionUs= */ 0);
      assertThat(positionUs.first).isEqualTo(timeline.getUidOfPeriod(0));
      assertThat(positionUs.second).isEqualTo(0);
    }
  
    @Test
    public void getPeriodPositionDynamicWindowKnownDuration() {
      long windowDurationUs = 1000;
      SinglePeriodTimeline timeline =
          new SinglePeriodTimeline(
              windowDurationUs,
              windowDurationUs,
              /* windowPositionInPeriodUs= */ 0,
              /* windowDefaultStartPositionUs= */ 0,
              /* isSeekable= */ false,
              /* isDynamic= */ true,
              /* useLiveConfiguration= */ true,
              /* manifest= */ null,
              MediaItem.fromUri(Uri.EMPTY));
      // Should return null with a positive position projection beyond window duration.
      Pair<Object, Long> positionUs =
          timeline.getPeriodPositionUs(
              window,
              period,
              /* windowIndex= */ 0,
              /* windowPositionUs= */ C.TIME_UNSET,
              /* defaultPositionProjectionUs= */ windowDurationUs + 1);
      assertThat(positionUs).isNull();
      // Should return (0, duration) with a projection equal to window duration.
      positionUs =
          timeline.getPeriodPositionUs(
              window,
              period,
              /* windowIndex= */ 0,
              /* windowPositionUs= */ C.TIME_UNSET,
              /* defaultPositionProjectionUs= */ windowDurationUs - 1);
      assertThat(positionUs.first).isEqualTo(timeline.getUidOfPeriod(0));
      assertThat(positionUs.second).isEqualTo(windowDurationUs - 1);
      // Should return (0, 0) without a position projection.
      positionUs =
          timeline.getPeriodPositionUs(
              window,
              period,
              /* windowIndex= */ 0,
              /* windowPositionUs= */ C.TIME_UNSET,
              /* defaultPositionProjectionUs= */ 0);
      assertThat(positionUs.first).isEqualTo(timeline.getUidOfPeriod(0));
      assertThat(positionUs.second).isEqualTo(0);
    }
  
    @Test
    @SuppressWarnings("deprecation") // Testing deprecated Window.tag is still populated correctly.
    public void setNullTag_returnsNullTag_butUsesDefaultUid() {
      SinglePeriodTimeline timeline =
          new SinglePeriodTimeline(
              /* durationUs= */ C.TIME_UNSET,
              /* isSeekable= */ false,
              /* isDynamic= */ false,
              /* isLive= */ false,
              /* manifest= */ null,
              new MediaItem.Builder().setUri(Uri.EMPTY).setTag(null).build());
  
      assertThat(timeline.getWindow(/* windowIndex= */ 0, window).tag).isNull();
      assertThat(timeline.getWindow(/* windowIndex= */ 0, window).mediaItem.localConfiguration.tag)
          .isNull();
      assertThat(timeline.getPeriod(/* periodIndex= */ 0, period, /* setIds= */ false).id).isNull();
      assertThat(timeline.getPeriod(/* periodIndex= */ 0, period, /* setIds= */ true).id).isNull();
      assertThat(timeline.getPeriod(/* periodIndex= */ 0, period, /* setIds= */ false).uid).isNull();
      assertThat(timeline.getPeriod(/* periodIndex= */ 0, period, /* setIds= */ true).uid)
          .isNotNull();
    }
  
    @Test
    @SuppressWarnings("deprecation") // Testing deprecated Window.tag is still populated correctly.
    public void getWindow_setsTag() {
      Object tag = new Object();
      SinglePeriodTimeline timeline =
          new SinglePeriodTimeline(
              /* durationUs= */ C.TIME_UNSET,
              /* isSeekable= */ false,
              /* isDynamic= */ false,
              /* isLive= */ false,
              /* manifest= */ null,
              new MediaItem.Builder().setUri(Uri.EMPTY).setTag(tag).build());
  
      assertThat(timeline.getWindow(/* windowIndex= */ 0, window).tag).isEqualTo(tag);
    }
  
    // Tests backward compatibility.
    @SuppressWarnings("deprecation")
    @Test
    public void getWindow_setsMediaItemAndTag() {
      MediaItem mediaItem = new MediaItem.Builder().setUri(Uri.EMPTY).setTag(new Object()).build();
      SinglePeriodTimeline timeline =
          new SinglePeriodTimeline(
              /* durationUs= */ C.TIME_UNSET,
              /* isSeekable= */ false,
              /* isDynamic= */ false,
              /* isLive= */ false,
              /* manifest= */ null,
              mediaItem);
  
      Window window = timeline.getWindow(/* windowIndex= */ 0, this.window);
  
      assertThat(window.mediaItem).isEqualTo(mediaItem);
      assertThat(window.tag).isEqualTo(mediaItem.localConfiguration.tag);
    }
  
    @Test
    public void getIndexOfPeriod_returnsPeriod() {
      SinglePeriodTimeline timeline =
          new SinglePeriodTimeline(
              /* durationUs= */ C.TIME_UNSET,
              /* isSeekable= */ false,
              /* isDynamic= */ false,
              /* isLive= */ false,
              /* manifest= */ null,
              MediaItem.fromUri(Uri.EMPTY));
      Object uid = timeline.getPeriod(/* periodIndex= */ 0, period, /* setIds= */ true).uid;
  
      assertThat(timeline.getIndexOfPeriod(uid)).isEqualTo(0);
      assertThat(timeline.getIndexOfPeriod(/* uid= */ null)).isEqualTo(C.INDEX_UNSET);
      assertThat(timeline.getIndexOfPeriod(/* uid= */ new Object())).isEqualTo(C.INDEX_UNSET);
    }
  }
  