Add e2e test for playing SilenceMediaSource

PiperOrigin-RevId: 348789555

library/core/src/test/java/com/google/android/exoplayer2/e2etest/SilencePlaybackTest.java

+/*
+ * Copyright (C) 2020 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.e2etest;
+
+import android.content.Context;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.robolectric.PlaybackOutput;
+import com.google.android.exoplayer2.robolectric.TestPlayerRunHelper;
+import com.google.android.exoplayer2.source.SilenceMediaSource;
+import com.google.android.exoplayer2.testutil.AutoAdvancingFakeClock;
+import com.google.android.exoplayer2.testutil.CapturingRenderersFactory;
+import com.google.android.exoplayer2.testutil.DumpFileAsserts;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+/** End-to-end tests using {@link SilenceMediaSource}. */
+// TODO(b/143232359): Remove once https://issuetracker.google.com/143232359 is resolved.
+@Config(sdk = 29)
+@RunWith(AndroidJUnit4.class)
+public final class SilencePlaybackTest {
+
+  @Test
+  public void test_500ms() throws Exception {
+    Context applicationContext = ApplicationProvider.getApplicationContext();
+    CapturingRenderersFactory capturingRenderersFactory =
+        new CapturingRenderersFactory(applicationContext);
+    SimpleExoPlayer player =
+        new SimpleExoPlayer.Builder(applicationContext, capturingRenderersFactory)
+            .setClock(new AutoAdvancingFakeClock())
+            .build();
+    PlaybackOutput playbackOutput = PlaybackOutput.register(player, capturingRenderersFactory);
+
+    player.setMediaSource(new SilenceMediaSource(/* durationUs= */ 500_000));
+    player.prepare();
+    player.play();
+    TestPlayerRunHelper.runUntilPlaybackState(player, Player.STATE_ENDED);
+    player.release();
+
+    DumpFileAsserts.assertOutput(
+        applicationContext, playbackOutput, "playbackdumps/silence/500ms.dump");
+  }
+}