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Add DummyDataSource

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A dummy DataSource which provides no data.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=150868950
This commit is contained in:
eguven 2017-03-22 05:47:00 -07:00 committed by Oliver Woodman
parent 382ba7ecf0
commit 8f636991ad
2 changed files with 63 additions and 14 deletions
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58
library/core/src/main/java/com/google/android/exoplayer2/upstream/DummyDataSource.java Normal file
View file

@ -0,0 +1,58 @@
/*
* 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.upstream;
import android.net.Uri;
import java.io.IOException;
/**
* A dummy DataSource which provides no data. {@link #open(DataSpec)} throws {@link IOException}.
*/
public final class DummyDataSource implements DataSource {
public static final DummyDataSource INSTANCE = new DummyDataSource();
/** A factory that that produces {@link DummyDataSource}. */
public static final Factory FACTORY = new Factory() {
@Override
public DataSource createDataSource() {
return new DummyDataSource();
}
};
private DummyDataSource() {}
@Override
public long open(DataSpec dataSpec) throws IOException {
throw new IOException("Dummy source");
}
@Override
public int read(byte[] buffer, int offset, int readLength) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public Uri getUri() {
return null;
}
@Override
public void close() throws IOException {
// do nothing.
}
}

19
library/dash/src/androidTest/java/com/google/android/exoplayer2/source/dash/DashUtilTest.java
View file

@ -23,10 +23,8 @@ import com.google.android.exoplayer2.source.dash.manifest.AdaptationSet;
import com.google.android.exoplayer2.source.dash.manifest.Period;
import com.google.android.exoplayer2.source.dash.manifest.Representation;
import com.google.android.exoplayer2.source.dash.manifest.SegmentBase.SingleSegmentBase;
import com.google.android.exoplayer2.testutil.FakeDataSource;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.DummyDataSource;
import com.google.android.exoplayer2.util.MimeTypes;
import java.io.IOException;
import java.util.Arrays;
import junit.framework.TestCase;
@ -37,25 +35,25 @@ public final class DashUtilTest extends TestCase {
public void testLoadDrmInitDataFromManifest() throws Exception {
Period period = newPeriod(newAdaptationSets(newRepresentations(newDrmInitData())));
DrmInitData drmInitData = DashUtil.loadDrmInitData(newDataSource(), period);
DrmInitData drmInitData = DashUtil.loadDrmInitData(DummyDataSource.INSTANCE, period);
assertEquals(newDrmInitData(), drmInitData);
}
public void testLoadDrmInitDataMissing() throws Exception {
Period period = newPeriod(newAdaptationSets(newRepresentations(null /* no init data */)));
DrmInitData drmInitData = DashUtil.loadDrmInitData(newDataSource(), period);
DrmInitData drmInitData = DashUtil.loadDrmInitData(DummyDataSource.INSTANCE, period);
assertNull(drmInitData);
}
public void testLoadDrmInitDataNoRepresentations() throws Exception {
Period period = newPeriod(newAdaptationSets(/* no representation */));
DrmInitData drmInitData = DashUtil.loadDrmInitData(newDataSource(), period);
DrmInitData drmInitData = DashUtil.loadDrmInitData(DummyDataSource.INSTANCE, period);
assertNull(drmInitData);
}
public void testLoadDrmInitDataNoAdaptationSets() throws Exception {
Period period = newPeriod(/* no adaptation set */);
DrmInitData drmInitData = DashUtil.loadDrmInitData(newDataSource(), period);
DrmInitData drmInitData = DashUtil.loadDrmInitData(DummyDataSource.INSTANCE, period);
assertNull(drmInitData);
}
@ -81,11 +79,4 @@ public final class DashUtilTest extends TestCase {
new byte[]{1, 4, 7, 0, 3, 6}));
}
private static DataSource newDataSource() {
// TODO: Use DummyDataSource when available.
FakeDataSource fakeDataSource = new FakeDataSource();
fakeDataSource.getDataSet().newDefaultData().appendReadError(new IOException("Unexpected"));
return fakeDataSource;
}
}