Enable window-period offset in tests by default.

This ensures all player interactions in tests automatically verify that
timestamps calculations are done correctly.

PiperOrigin-RevId: 297813324

extensions/ima/src/test/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoaderTest.java

@@ -39,6 +39,7 @@ import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlaybackException;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.Timeline;
+import com.google.android.exoplayer2.Timeline.Period;
 import com.google.android.exoplayer2.source.ads.AdPlaybackState;
 import com.google.android.exoplayer2.source.ads.AdsLoader;
 import com.google.android.exoplayer2.source.ads.AdsMediaSource.AdLoadException;
@@ -67,6 +68,8 @@ public class ImaAdsLoaderTest {
       new FakeTimeline(
           new TimelineWindowDefinition(
               /* isSeekable= */ true, /* isDynamic= */ false, CONTENT_DURATION_US));
+  private static final long CONTENT_PERIOD_DURATION_US =
+      CONTENT_TIMELINE.getPeriod(/* periodIndex= */ 0, new Period()).durationUs;
   private static final Uri TEST_URI = Uri.EMPTY;
   private static final long TEST_AD_DURATION_US = 5 * C.MICROS_PER_SECOND;
   private static final long[][] PREROLL_ADS_DURATIONS_US = new long[][] {{TEST_AD_DURATION_US}};
@@ -147,7 +150,7 @@ public class ImaAdsLoaderTest {
         .isEqualTo(
             new AdPlaybackState(/* adGroupTimesUs...= */ 0)
                 .withAdDurationsUs(PREROLL_ADS_DURATIONS_US)
-                .withContentDurationUs(CONTENT_DURATION_US));
+                .withContentDurationUs(CONTENT_PERIOD_DURATION_US));
   }
 
   @Test
@@ -216,7 +219,7 @@ public class ImaAdsLoaderTest {
     assertThat(adsLoaderListener.adPlaybackState)
         .isEqualTo(
             new AdPlaybackState(/* adGroupTimesUs...= */ 0)
-                .withContentDurationUs(CONTENT_DURATION_US)
+                .withContentDurationUs(CONTENT_PERIOD_DURATION_US)
                 .withAdCount(/* adGroupIndex= */ 0, /* adCount= */ 1)
                 .withAdUri(/* adGroupIndex= */ 0, /* adIndexInAdGroup= */ 0, /* uri= */ TEST_URI)
                 .withAdDurationsUs(PREROLL_ADS_DURATIONS_US)

library/core/src/test/java/com/google/android/exoplayer2/ExoPlayerTest.java

@@ -459,7 +459,9 @@ public final class ExoPlayerTest {
   public void adGroupWithLoadErrorIsSkipped() throws Exception {
     AdPlaybackState initialAdPlaybackState =
         FakeTimeline.createAdPlaybackState(
-            /* adsPerAdGroup= */ 1, /* adGroupTimesUs=... */ 5 * C.MICROS_PER_SECOND);
+            /* adsPerAdGroup= */ 1, /* adGroupTimesUs=... */
+            TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US
+                + 5 * C.MICROS_PER_SECOND);
     Timeline fakeTimeline =
         new FakeTimeline(
             new TimelineWindowDefinition(
@@ -702,7 +704,8 @@ public final class ExoPlayerTest {
               EventDispatcher eventDispatcher,
               @Nullable TransferListener transferListener) {
             FakeMediaPeriod mediaPeriod = new FakeMediaPeriod(trackGroupArray, eventDispatcher);
-            mediaPeriod.setDiscontinuityPositionUs(0);
+            mediaPeriod.setDiscontinuityPositionUs(
+                TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US);
             return mediaPeriod;
           }
         };
@@ -3064,6 +3067,7 @@ public final class ExoPlayerTest {
                 /* isPlaceholder= */ false,
                 /* durationUs= */ 10_000_000,
                 /* defaultPositionUs= */ 5_000_000,
+                TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US,
                 adPlaybackState));
     FakeMediaSource fakeMediaSource = new FakeMediaSource(/* timeline= */ null);
     AtomicReference<Player> playerReference = new AtomicReference<>();

library/core/src/test/java/com/google/android/exoplayer2/MediaPeriodQueueTest.java

@@ -231,7 +231,8 @@ public final class MediaPeriodQueueTest {
         /* startPositionUs= */ 0,
         /* requestedContentPositionUs= */ C.TIME_UNSET,
         /* endPositionUs= */ C.TIME_UNSET,
-        /* durationUs= */ CONTENT_DURATION_US,
+        /* durationUs= */ CONTENT_DURATION_US
+            + TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US,
         /* isLastInPeriod= */ true,
         /* isLastInWindow= */ false,
         /* nextAdGroupIndex= */ C.INDEX_UNSET);

library/core/src/test/java/com/google/android/exoplayer2/analytics/AnalyticsCollectorTest.java

@@ -762,7 +762,8 @@ public final class AnalyticsCollectorTest {
             FakeTimeline.createAdPlaybackState(
                 /* adsPerAdGroup= */ 1, /* adGroupTimesUs...= */
                 0,
-                5 * C.MICROS_PER_SECOND,
+                TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US
+                    + 5 * C.MICROS_PER_SECOND,
                 C.TIME_END_OF_SOURCE));
     AtomicInteger playedAdCount = new AtomicInteger(0);
     Timeline adTimeline =
@@ -997,7 +998,9 @@ public final class AnalyticsCollectorTest {
                 /* isDynamic= */ false,
                 10 * C.MICROS_PER_SECOND,
                 FakeTimeline.createAdPlaybackState(
-                    /* adsPerAdGroup= */ 1, /* adGroupTimesUs...= */ 5 * C.MICROS_PER_SECOND)));
+                    /* adsPerAdGroup= */ 1, /* adGroupTimesUs...= */
+                    TimelineWindowDefinition.DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US
+                        + 5 * C.MICROS_PER_SECOND)));
     FakeMediaSource fakeMediaSource =
         new FakeMediaSource(adTimeline, ExoPlayerTestRunner.Builder.VIDEO_FORMAT);
     ActionSchedule actionSchedule =

testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeTimeline.java

@@ -32,9 +32,13 @@ public final class FakeTimeline extends Timeline {
    */
   public static final class TimelineWindowDefinition {
 
-    /** Default test window duration in microseconds. */
+    /** Default window duration in microseconds. */
     public static final long DEFAULT_WINDOW_DURATION_US = 10 * C.MICROS_PER_SECOND;
 
+    /** Default offset of a window in its first period in microseconds. */
+    public static final long DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US =
+        10_000 * C.MICROS_PER_SECOND;
+
     public final int periodCount;
     public final Object id;
     public final boolean isSeekable;
@@ -43,6 +47,7 @@ public final class FakeTimeline extends Timeline {
     public final boolean isPlaceholder;
     public final long durationUs;
     public final long defaultPositionUs;
+    public final long windowOffsetInFirstPeriodUs;
     public final AdPlaybackState adPlaybackState;
 
     /**
@@ -61,6 +66,7 @@ public final class FakeTimeline extends Timeline {
           /* isPlaceholder= */ true,
           /* durationUs= */ C.TIME_UNSET,
           /* defaultPositionUs= */ 0,
+          /* windowOffsetInFirstPeriodUs= */ 0,
           AdPlaybackState.NONE);
     }
 
@@ -129,6 +135,7 @@ public final class FakeTimeline extends Timeline {
           /* isPlaceholder= */ false,
           durationUs,
           /* defaultPositionUs= */ 0,
+          DEFAULT_WINDOW_OFFSET_IN_FIRST_PERIOD_US,
           adPlaybackState);
     }
 
@@ -144,6 +151,8 @@ public final class FakeTimeline extends Timeline {
      * @param isPlaceholder Whether the window is a placeholder.
      * @param durationUs The duration of the window in microseconds.
      * @param defaultPositionUs The default position of the window in microseconds.
+     * @param windowOffsetInFirstPeriodUs The offset of the window in the first period, in
+     *     microseconds.
      * @param adPlaybackState The ad playback state.
      */
     public TimelineWindowDefinition(
@@ -155,7 +164,9 @@ public final class FakeTimeline extends Timeline {
         boolean isPlaceholder,
         long durationUs,
         long defaultPositionUs,
+        long windowOffsetInFirstPeriodUs,
         AdPlaybackState adPlaybackState) {
+      Assertions.checkArgument(durationUs != C.TIME_UNSET || periodCount == 1);
       this.periodCount = periodCount;
       this.id = id;
       this.isSeekable = isSeekable;
@@ -164,6 +175,7 @@ public final class FakeTimeline extends Timeline {
       this.isPlaceholder = isPlaceholder;
       this.durationUs = durationUs;
       this.defaultPositionUs = defaultPositionUs;
+      this.windowOffsetInFirstPeriodUs = windowOffsetInFirstPeriodUs;
       this.adPlaybackState = adPlaybackState;
     }
   }
@@ -262,7 +274,7 @@ public final class FakeTimeline extends Timeline {
         windowDefinition.durationUs,
         periodOffsets[windowIndex],
         periodOffsets[windowIndex + 1] - 1,
-        /* positionInFirstPeriodUs= */ 0);
+        windowDefinition.windowOffsetInFirstPeriodUs);
     window.isPlaceholder = windowDefinition.isPlaceholder;
     return window;
   }
@@ -279,8 +291,20 @@ public final class FakeTimeline extends Timeline {
     TimelineWindowDefinition windowDefinition = windowDefinitions[windowIndex];
     Object id = setIds ? windowPeriodIndex : null;
     Object uid = setIds ? Pair.create(windowDefinition.id, windowPeriodIndex) : null;
-    long periodDurationUs = windowDefinition.durationUs / windowDefinition.periodCount;
+    // Arbitrarily set period duration by distributing window duration equally among all periods.
-    long positionInWindowUs = periodDurationUs * windowPeriodIndex;
+    long periodDurationUs =
+        windowDefinition.durationUs == C.TIME_UNSET
+            ? C.TIME_UNSET
+            : windowDefinition.durationUs / windowDefinition.periodCount;
+    long positionInWindowUs;
+    if (windowPeriodIndex == 0) {
+      if (windowDefinition.durationUs != C.TIME_UNSET) {
+        periodDurationUs += windowDefinition.windowOffsetInFirstPeriodUs;
+      }
+      positionInWindowUs = -windowDefinition.windowOffsetInFirstPeriodUs;
+    } else {
+      positionInWindowUs = periodDurationUs * windowPeriodIndex;
+    }
     return period.set(
         id,
         uid,