diff --git a/library/dash/build.gradle b/library/dash/build.gradle
index 48e9b9b97e..99441a2849 100644
--- a/library/dash/build.gradle
+++ b/library/dash/build.gradle
@@ -39,6 +39,11 @@ dependencies {
     androidTestCompile 'com.google.dexmaker:dexmaker:' + dexmakerVersion
     androidTestCompile 'com.google.dexmaker:dexmaker-mockito:' + dexmakerVersion
     androidTestCompile 'org.mockito:mockito-core:' + mockitoVersion
+    testCompile project(modulePrefix + 'testutils')
+    testCompile 'com.google.truth:truth:' + truthVersion
+    testCompile 'junit:junit:' + junitVersion
+    testCompile 'org.mockito:mockito-core:' + mockitoVersion
+    testCompile 'org.robolectric:robolectric:' + robolectricVersion
 }
 
 ext {
diff --git a/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/manifest/RepresentationKey.java b/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/manifest/RepresentationKey.java
index cf17a081d7..4ce1d06700 100644
--- a/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/manifest/RepresentationKey.java
+++ b/library/dash/src/main/java/com/google/android/exoplayer2/source/dash/manifest/RepresentationKey.java
@@ -80,4 +80,27 @@ public final class RepresentationKey implements Parcelable, Comparable<Represent
     return result;
   }
 
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+
+    RepresentationKey that = (RepresentationKey) o;
+    return periodIndex == that.periodIndex
+        && adaptationSetIndex == that.adaptationSetIndex
+        && representationIndex == that.representationIndex;
+  }
+
+  @Override
+  public int hashCode() {
+    int result = periodIndex;
+    result = 31 * result + adaptationSetIndex;
+    result = 31 * result + representationIndex;
+    return result;
+  }
+
 }