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Add DefaultLoadControl test for starting playback

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Also refactor the tests to make them behavioral (rather than testing the method)
and inline simple assertions.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=191867614
This commit is contained in:
andrewlewis 2018-04-06 03:02:23 -07:00 committed by Oliver Woodman
parent 66d2b76a6c
commit 02bc2d7ce1
2 changed files with 108 additions and 111 deletions
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111
library/core/src/test/java/com/google/android/exoplayer2/DefaultLoadControlShouldContinueLoadingTest.java
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@ -1,111 +0,0 @@
/*
* 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;
import static com.google.common.truth.Truth.assertThat;
import com.google.android.exoplayer2.DefaultLoadControl.Builder;
import com.google.android.exoplayer2.upstream.DefaultAllocator;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
/** Unit test for {@link DefaultLoadControl#shouldContinueLoading(long, float)}. */
@RunWith(RobolectricTestRunner.class)
public class DefaultLoadControlShouldContinueLoadingTest {
private static final int PLAYBACK_SPEED = 1;
private static final int MIN_BUFFER_MS = DefaultLoadControl.DEFAULT_MIN_BUFFER_MS;
private static final int MAX_BUFFER_MS = DefaultLoadControl.DEFAULT_MAX_BUFFER_MS;
private static final int TARGET_BUFFER_BYTES = C.DEFAULT_BUFFER_SEGMENT_SIZE * 2;
private Builder builder;
private DefaultAllocator allocator;
private DefaultLoadControl defaultLoadControl;
@Before
public void setUp() throws Exception {
builder = new Builder();
allocator = new DefaultAllocator(true, C.DEFAULT_BUFFER_SEGMENT_SIZE);
}
@Test
public void testReturnsTrueUntilMaximumBufferExceeded() throws Exception {
createDefaultLoadControl();
assertThatShouldContinueLoadingReturnsTrue(0);
assertThatShouldContinueLoadingReturnsTrue(MIN_BUFFER_MS);
assertThatShouldContinueLoadingReturnsTrue(MAX_BUFFER_MS);
assertThatShouldContinueLoadingReturnsFalse(MAX_BUFFER_MS + 1);
}
@Test
public void testReturnsFalseUntilFallBelowMinimumBufferOnceBufferingStopped() throws Exception {
createDefaultLoadControl();
assertThatShouldContinueLoadingReturnsFalse(MAX_BUFFER_MS + 1);
assertThatShouldContinueLoadingReturnsFalse(MAX_BUFFER_MS);
assertThatShouldContinueLoadingReturnsFalse(MIN_BUFFER_MS);
assertThatShouldContinueLoadingReturnsTrue(MIN_BUFFER_MS - 1);
}
@Test
public void testReturnsTrueUntilMinimumBufferReachedAlthoughTargetBufferBytesReached()
throws Exception {
createDefaultLoadControl();
makeSureTargetBufferBytesReached();
assertThatShouldContinueLoadingReturnsTrue(0);
assertThatShouldContinueLoadingReturnsTrue(MIN_BUFFER_MS - 1);
assertThatShouldContinueLoadingReturnsFalse(MIN_BUFFER_MS);
assertThatShouldContinueLoadingReturnsFalse(MAX_BUFFER_MS + 1);
}
@Test
public void testAlwaysReturnsFalseIfMaximumBufferReachedAndNotPrioritizeTimeOverSizeThresholds()
throws Exception {
builder.setPrioritizeTimeOverSizeThresholds(false);
createDefaultLoadControl();
// Put defaultLoadControl in buffering state.
assertThatShouldContinueLoadingReturnsTrue(0);
makeSureTargetBufferBytesReached();
assertThatShouldContinueLoadingReturnsFalse(0);
assertThatShouldContinueLoadingReturnsFalse(MIN_BUFFER_MS);
assertThatShouldContinueLoadingReturnsFalse(MAX_BUFFER_MS + 1);
}
private void createDefaultLoadControl() {
builder.setAllocator(allocator);
builder.setTargetBufferBytes(TARGET_BUFFER_BYTES);
defaultLoadControl = builder.createDefaultLoadControl();
defaultLoadControl.onTracksSelected(new Renderer[0], null, null);
}
private void makeSureTargetBufferBytesReached() {
while (allocator.getTotalBytesAllocated() < TARGET_BUFFER_BYTES) {
allocator.allocate();
}
}
private void assertThatShouldContinueLoadingReturnsFalse(int bufferedDurationMs) {
assertThat(defaultLoadControl.shouldContinueLoading(bufferedDurationMs * 1000, PLAYBACK_SPEED))
.isFalse();
}
private void assertThatShouldContinueLoadingReturnsTrue(int bufferedDurationMs) {
assertThat(defaultLoadControl.shouldContinueLoading(bufferedDurationMs * 1000, PLAYBACK_SPEED))
.isTrue();
}
}

108
library/core/src/test/java/com/google/android/exoplayer2/DefaultLoadControlTest.java Normal file
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@ -0,0 +1,108 @@
/*
* 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;
import static com.google.common.truth.Truth.assertThat;
import com.google.android.exoplayer2.DefaultLoadControl.Builder;
import com.google.android.exoplayer2.upstream.DefaultAllocator;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
/** Unit tests for {@link DefaultLoadControl}. */
@RunWith(RobolectricTestRunner.class)
public class DefaultLoadControlTest {
private static final float SPEED = 1f;
private static final long MIN_BUFFER_US = C.msToUs(DefaultLoadControl.DEFAULT_MIN_BUFFER_MS);
private static final long MAX_BUFFER_US = C.msToUs(DefaultLoadControl.DEFAULT_MAX_BUFFER_MS);
private static final int TARGET_BUFFER_BYTES = C.DEFAULT_BUFFER_SEGMENT_SIZE * 2;
private Builder builder;
private DefaultAllocator allocator;
private DefaultLoadControl loadControl;
@Before
public void setUp() throws Exception {
builder = new Builder();
allocator = new DefaultAllocator(true, C.DEFAULT_BUFFER_SEGMENT_SIZE);
}
@Test
public void testShouldContinueLoading_untilMaxBufferExceeded() {
createDefaultLoadControl();
assertThat(loadControl.shouldContinueLoading(/* bufferedDurationUs= */ 0, SPEED)).isTrue();
assertThat(loadControl.shouldContinueLoading(MIN_BUFFER_US, SPEED)).isTrue();
assertThat(loadControl.shouldContinueLoading(MAX_BUFFER_US, SPEED)).isTrue();
assertThat(loadControl.shouldContinueLoading(MAX_BUFFER_US + 1, SPEED)).isFalse();
}
@Test
public void testShouldNotContinueLoadingOnceBufferingStopped_untilBelowMinBuffer() {
createDefaultLoadControl();
assertThat(loadControl.shouldContinueLoading(MAX_BUFFER_US + 1, SPEED)).isFalse();
assertThat(loadControl.shouldContinueLoading(MAX_BUFFER_US, SPEED)).isFalse();
assertThat(loadControl.shouldContinueLoading(MIN_BUFFER_US, SPEED)).isFalse();
assertThat(loadControl.shouldContinueLoading(MIN_BUFFER_US - 1, SPEED)).isTrue();
}
@Test
public void testShouldContinueLoadingWithTargetBufferBytesReached_untilMinBufferReached() {
createDefaultLoadControl();
makeSureTargetBufferBytesReached();
assertThat(loadControl.shouldContinueLoading(/* bufferedDurationUs= */ 0, SPEED)).isTrue();
assertThat(loadControl.shouldContinueLoading(MIN_BUFFER_US - 1, SPEED)).isTrue();
assertThat(loadControl.shouldContinueLoading(MIN_BUFFER_US, SPEED)).isFalse();
assertThat(loadControl.shouldContinueLoading(MAX_BUFFER_US + 1, SPEED)).isFalse();
}
@Test
public void testShouldNeverContinueLoading_ifMaxBufferReachedAndNotPrioritizeTimeOverSize() {
builder.setPrioritizeTimeOverSizeThresholds(false);
createDefaultLoadControl();
// Put loadControl in buffering state.
assertThat(loadControl.shouldContinueLoading(/* bufferedDurationUs= */ 0, SPEED)).isTrue();
makeSureTargetBufferBytesReached();
assertThat(loadControl.shouldContinueLoading(/* bufferedDurationUs= */ 0, SPEED)).isFalse();
assertThat(loadControl.shouldContinueLoading(MIN_BUFFER_US, SPEED)).isFalse();
assertThat(loadControl.shouldContinueLoading(MAX_BUFFER_US + 1, SPEED)).isFalse();
}
@Test
public void testStartsPlayback_whenMinBufferSizeReached() {
createDefaultLoadControl();
assertThat(loadControl.shouldStartPlayback(MIN_BUFFER_US, SPEED, /* rebuffering= */ false))
.isTrue();
}
private void createDefaultLoadControl() {
builder.setAllocator(allocator);
builder.setTargetBufferBytes(TARGET_BUFFER_BYTES);
loadControl = builder.createDefaultLoadControl();
loadControl.onTracksSelected(new Renderer[0], null, null);
}
private void makeSureTargetBufferBytesReached() {
while (allocator.getTotalBytesAllocated() < TARGET_BUFFER_BYTES) {
allocator.allocate();
}
}
}