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/*
* 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.util;
import static com.google.common.truth.Truth.assertThat;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
/** Unit test for {@link TimedValueQueue}. */
@RunWith(AndroidJUnit4.class)
public class TimedValueQueueTest {
private TimedValueQueue<String> queue;
@Before
public void setUp() throws Exception {
queue = new TimedValueQueue<>();
}
@Test
public void addAndPollValues() {
queue.add(0, "a");
queue.add(1, "b");
queue.add(2, "c");
assertThat(queue.poll(0)).isEqualTo("a");
assertThat(queue.poll(1)).isEqualTo("b");
assertThat(queue.poll(2)).isEqualTo("c");
}
@Test
public void bufferCapacityIncreasesAutomatically() {
queue = new TimedValueQueue<>(1);
for (int i = 0; i < 20; i++) {
queue.add(i, "" + i);
if ((i & 1) == 1) {
assertThat(queue.poll(0)).isEqualTo("" + (i / 2));
}
}
assertThat(queue.size()).isEqualTo(10);
}
@Test
public void timeDiscontinuityClearsValues() {
queue.add(1, "b");
queue.add(2, "c");
queue.add(0, "a");
assertThat(queue.size()).isEqualTo(1);
assertThat(queue.poll(0)).isEqualTo("a");
}
@Test
public void timeDiscontinuityOnFullBufferClearsValues() {
queue = new TimedValueQueue<>(2);
queue.add(1, "b");
queue.add(3, "c");
queue.add(2, "a");
assertThat(queue.size()).isEqualTo(1);
assertThat(queue.poll(2)).isEqualTo("a");
}
@Test
public void pollReturnsClosestValue() {
queue.add(0, "a");
queue.add(3, "b");
assertThat(queue.poll(2)).isEqualTo("b");
assertThat(queue.size()).isEqualTo(0);
}
@Test
public void pollRemovesPreviousValues() {
queue.add(0, "a");
queue.add(1, "b");
queue.add(2, "c");
assertThat(queue.poll(1)).isEqualTo("b");
assertThat(queue.size()).isEqualTo(1);
}
@Test
public void pollFloorReturnsClosestPreviousValue() {
queue.add(0, "a");
queue.add(3, "b");
assertThat(queue.pollFloor(2)).isEqualTo("a");
assertThat(queue.pollFloor(2)).isEqualTo(null);
assertThat(queue.pollFloor(3)).isEqualTo("b");
assertThat(queue.size()).isEqualTo(0);
}
@Test
public void pollFloorRemovesPreviousValues() {
queue.add(0, "a");
queue.add(1, "b");
queue.add(2, "c");
assertThat(queue.pollFloor(1)).isEqualTo("b");
assertThat(queue.size()).isEqualTo(1);
}
}
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