Testing SmoothStreaming Media Period Compatibility in SmartTube
This test suite validates the SsMediaPeriod component in ExoPlayer’s SmoothStreaming implementation, focusing on stream key compatibility and manifest filtering functionality. The tests ensure proper handling of video, audio, and text formats with different bitrates and configurations.
Test Coverage Overview
Implementation Analysis
Technical Details
Best Practices Demonstrated
yuliskov/smarttube
exoplayer-amzn-2.10.6/library/smoothstreaming/src/test/java/com/google/android/exoplayer2/source/smoothstreaming/SsMediaPeriodTest.java
/*
* Copyright (C) 2018 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.source.smoothstreaming;
import static com.google.android.exoplayer2.source.smoothstreaming.SsTestUtils.createSsManifest;
import static com.google.android.exoplayer2.source.smoothstreaming.SsTestUtils.createStreamElement;
import static org.mockito.Mockito.mock;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.source.CompositeSequenceableLoaderFactory;
import com.google.android.exoplayer2.source.MediaSource.MediaPeriodId;
import com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispatcher;
import com.google.android.exoplayer2.source.smoothstreaming.manifest.SsManifest;
import com.google.android.exoplayer2.testutil.MediaPeriodAsserts;
import com.google.android.exoplayer2.testutil.MediaPeriodAsserts.FilterableManifestMediaPeriodFactory;
import com.google.android.exoplayer2.testutil.RobolectricUtil;
import com.google.android.exoplayer2.upstream.Allocator;
import com.google.android.exoplayer2.upstream.LoadErrorHandlingPolicy;
import com.google.android.exoplayer2.upstream.LoaderErrorThrower;
import com.google.android.exoplayer2.upstream.TransferListener;
import com.google.android.exoplayer2.util.MimeTypes;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.annotation.Config;
/** Unit tests for {@link SsMediaPeriod}. */
@RunWith(AndroidJUnit4.class)
@Config(shadows = {RobolectricUtil.CustomLooper.class, RobolectricUtil.CustomMessageQueue.class})
public class SsMediaPeriodTest {
@Test
public void getSteamKeys_isCompatibleWithSsManifestFilter() {
SsManifest testManifest =
createSsManifest(
createStreamElement(
/* name= */ "video",
C.TRACK_TYPE_VIDEO,
createVideoFormat(/* bitrate= */ 200000),
createVideoFormat(/* bitrate= */ 400000),
createVideoFormat(/* bitrate= */ 800000)),
createStreamElement(
/* name= */ "audio",
C.TRACK_TYPE_AUDIO,
createAudioFormat(/* bitrate= */ 48000),
createAudioFormat(/* bitrate= */ 96000)),
createStreamElement(
/* name= */ "text", C.TRACK_TYPE_TEXT, createTextFormat(/* language= */ "eng")));
FilterableManifestMediaPeriodFactory<SsManifest> mediaPeriodFactory =
(manifest, periodIndex) ->
new SsMediaPeriod(
manifest,
mock(SsChunkSource.Factory.class),
mock(TransferListener.class),
mock(CompositeSequenceableLoaderFactory.class),
mock(LoadErrorHandlingPolicy.class),
new EventDispatcher()
.withParameters(
/* windowIndex= */ 0,
/* mediaPeriodId= */ new MediaPeriodId(/* periodUid= */ new Object()),
/* mediaTimeOffsetMs= */ 0),
mock(LoaderErrorThrower.class),
mock(Allocator.class));
MediaPeriodAsserts.assertGetStreamKeysAndManifestFilterIntegration(
mediaPeriodFactory, testManifest);
}
private static Format createVideoFormat(int bitrate) {
return Format.createContainerFormat(
/* id= */ null,
/* label= */ null,
MimeTypes.VIDEO_MP4,
MimeTypes.VIDEO_H264,
/* codecs= */ null,
bitrate,
/* selectionFlags= */ 0,
/* roleFlags= */ 0,
/* language= */ null);
}
private static Format createAudioFormat(int bitrate) {
return Format.createContainerFormat(
/* id= */ null,
/* label= */ null,
MimeTypes.AUDIO_MP4,
MimeTypes.AUDIO_AAC,
/* codecs= */ null,
bitrate,
/* selectionFlags= */ 0,
/* roleFlags= */ 0,
/* language= */ null);
}
private static Format createTextFormat(String language) {
return Format.createContainerFormat(
/* id= */ null,
/* label= */ null,
MimeTypes.APPLICATION_MP4,
MimeTypes.TEXT_VTT,
/* codecs= */ null,
/* bitrate= */ Format.NO_VALUE,
/* selectionFlags= */ 0,
/* roleFlags= */ 0,
language);
}
}