diff --git a/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveDataSet.java b/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveDataSet.java
new file mode 100644
index 0000000000..961da2c9dd
--- /dev/null
+++ b/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveDataSet.java
@@ -0,0 +1,87 @@
+/*
+ * 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.testutil;
+
+import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.Format;
+import com.google.android.exoplayer2.trackselection.TrackSelection;
+
+/**
+ * Fake data set emulating the data of an adaptive media source.
+ * It provides chunk data for all {@link Format}s in the given {@link TrackSelection}.
+ */
+public final class FakeAdaptiveDataSet extends FakeDataSet {
+
+  /**
+   * Factory for {@link FakeAdaptiveDataSet}s.
+   */
+  public static final class Factory {
+
+    private final long chunkDurationUs;
+
+    public Factory(long chunkDurationUs) {
+      this.chunkDurationUs = chunkDurationUs;
+    }
+
+    public FakeAdaptiveDataSet createDataSet(TrackSelection trackSelection, long mediaDurationUs) {
+      return new FakeAdaptiveDataSet(trackSelection, mediaDurationUs, chunkDurationUs);
+    }
+
+  }
+
+  private final long chunkDurationUs;
+  private final long lastChunkDurationUs;
+
+  public FakeAdaptiveDataSet(TrackSelection trackSelection, long mediaDurationUs,
+      long chunkDurationUs) {
+    this.chunkDurationUs = chunkDurationUs;
+    int selectionCount = trackSelection.length();
+    long lastChunkDurationUs = mediaDurationUs % chunkDurationUs;
+    int fullChunks = (int) (mediaDurationUs / chunkDurationUs);
+    for (int i = 0; i < selectionCount; i++) {
+      String uri = getUri(i);
+      Format format = trackSelection.getFormat(i);
+      int chunkLength = (int) (format.bitrate * chunkDurationUs / (8 * C.MICROS_PER_SECOND));
+      FakeData newData = this.newData(uri);
+      for (int j = 0; j < fullChunks; j++) {
+        newData.appendReadData(chunkLength);
+      }
+      if (lastChunkDurationUs > 0) {
+        int lastChunkLength = (int) (format.bitrate * (mediaDurationUs % chunkDurationUs)
+            / (8 * C.MICROS_PER_SECOND));
+        newData.appendReadData(lastChunkLength);
+      }
+    }
+    this.lastChunkDurationUs = lastChunkDurationUs == 0 ? chunkDurationUs : lastChunkDurationUs;
+  }
+
+  public String getUri(int trackSelectionIndex) {
+    return "fake://adaptive.media/" + Integer.toString(trackSelectionIndex);
+  }
+
+  public long getChunkDuration(int chunkIndex) {
+    return chunkIndex == getAllData().size() - 1 ? lastChunkDurationUs : chunkDurationUs;
+  }
+
+  public long getStartTime(int chunkIndex) {
+    return chunkIndex * chunkDurationUs;
+  }
+
+  public int getChunkIndexByPosition(long positionUs) {
+    return (int) (positionUs / chunkDurationUs);
+  }
+
+}
diff --git a/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeDataSet.java b/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeDataSet.java
index f56bcae6a0..777d46f1a1 100644
--- a/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeDataSet.java
+++ b/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeDataSet.java
@@ -67,7 +67,7 @@ import java.util.List;
  *         .endData();
  * </pre>
  */
-public final class FakeDataSet {
+public class FakeDataSet {
 
   /** Container of fake data to be served by a {@link FakeDataSource}. */
   public static final class FakeData {