Adding dummy device report log.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=110768506

playbacktests/src/main/java/com/google/android/exoplayer/playbacktests/util/ExoHostedTest.java

@@ -112,11 +112,12 @@ public abstract class ExoHostedTest implements HostedTest, ExoPlayer.Listener {
   }
 
   @Override
-  public final void assertPassed() {
+  public final void onFinished() {
     if (failOnPlayerError && playerError != null) {
       throw new Error(playerError);
     }
-    assertPassedInternal();
+    logMetrics();
+    assertPassed();
   }
 
   // ExoPlayer.Listener
@@ -160,10 +161,14 @@ public abstract class ExoHostedTest implements HostedTest, ExoPlayer.Listener {
     // Do nothing. Interested subclasses may override.
   }
 
-  protected void assertPassedInternal() {
+  protected void assertPassed() {
     // Do nothing. Subclasses may override to add additional assertions.
   }
 
+  protected void logMetrics() {
+    // Do nothing. Subclasses may override to log metrics.
+  }
+
   // Utility methods and actions for subclasses.
 
   protected final long getTotalPlayingTimeMs() {

playbacktests/src/main/java/com/google/android/exoplayer/playbacktests/util/HostActivity.java

@@ -74,12 +74,12 @@ public final class HostActivity extends Activity implements SurfaceHolder.Callba
     boolean isFinished();
 
     /**
-     * Asserts that the test passed.
+     * Called after the test is finished and has been released. Implementations may use this method
+     * to assert that test criteria were met.
      * <p>
-     * Called on the test thread once the test has reported that it's finished and after the test
-     * has been released.
+     * Called on the test thread.
      */
-    void assertPassed();
+    void onFinished();
 
   }
 
@@ -120,7 +120,7 @@ public final class HostActivity extends Activity implements SurfaceHolder.Callba
     if (hostedTestReleasedCondition.block(timeoutMs)) {
       if (hostedTestFinished) {
         Log.d(TAG, "Test finished. Checking pass conditions.");
-        hostedTest.assertPassed();
+        hostedTest.onFinished();
         Log.d(TAG, "Pass conditions checked.");
       } else {
         Log.e(TAG, "Test released before it finished. Activity may have been paused whilst test "

playbacktests/src/main/java/com/google/android/exoplayer/playbacktests/util/LogcatMetricsLogger.java

+/*
+ * Copyright (C) 2014 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.exoplayer.playbacktests.util;
+
+import android.os.Bundle;
+import android.util.Log;
+
+/**
+ * Implementation of {@link MetricsLogger} that prints the metrics to logcat.
+ */
+public final class LogcatMetricsLogger implements MetricsLogger {
+
+  private final String tag;
+
+  public LogcatMetricsLogger(String tag) {
+    this.tag = tag;
+  }
+
+  @Override
+  public void logMetrics(Bundle metrics) {
+    if (metrics != null) {
+      for (String key : metrics.keySet()) {
+        Log.v(tag, key + ": " + metrics.get(key).toString());
+      }
+    }
+  }
+
+}

playbacktests/src/main/java/com/google/android/exoplayer/playbacktests/util/MetricsLogger.java

+/*
+ * Copyright (C) 2014 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.exoplayer.playbacktests.util;
+
+import android.app.Instrumentation;
+import android.os.Bundle;
+
+/**
+ * Metric Logging interface for ExoPlayer playback tests.
+ */
+public interface MetricsLogger {
+
+  String KEY_FRAMES_DROPPED_COUNT = "Frames Dropped (Count)";
+  String KEY_FRAMES_RENDERED_COUNT = "Frames Rendered (Count)";
+  String KEY_FRAMES_SKIPPED_COUNT = "Frames Skipped (Count)";
+  String KEY_MAX_CONSECUTIVE_FRAMES_DROPPED_COUNT =
+      "Maximum Consecutive Frames Skipped";
+  String KEY_TEST_NAME = "Test Name";
+
+  /**
+   * Logs the metrics provided from a test.
+   *
+   * @param metrics The {@link Bundle} of metrics to be logged.
+   */
+  void logMetrics(Bundle metrics);
+
+  /**
+   * A factory for instantiating MetricsLogger instances.
+   */
+  final class Factory {
+
+    private Factory() {}
+
+    /**
+     * Obtains a new instance of MetricsLogger.
+     *
+     * @param instrumentation The test instrumentation.
+     * @param tag The tag to be used for logcat logs.
+     */
+    public static MetricsLogger createDefault(Instrumentation instrumentation, String tag) {
+      return new LogcatMetricsLogger(tag);
+    }
+  }
+
+}