| /* |
| * Copyright (C) 2016 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.cache; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.ArgumentMatchers.anyString; |
| import static org.mockito.Mockito.when; |
| |
| import androidx.test.core.app.ApplicationProvider; |
| import androidx.test.ext.junit.runners.AndroidJUnit4; |
| import com.google.android.exoplayer2.extractor.ChunkIndex; |
| import com.google.android.exoplayer2.testutil.TestUtil; |
| import com.google.android.exoplayer2.util.Util; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.TreeSet; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| |
| /** Tests for {@link CachedRegionTracker}. */ |
| @RunWith(AndroidJUnit4.class) |
| public final class CachedRegionTrackerTest { |
| |
| private static final String CACHE_KEY = "abc"; |
| private static final long MS_IN_US = 1000; |
| |
| // 5 chunks, each 20 bytes long and 100 ms long. |
| private static final ChunkIndex CHUNK_INDEX = |
| new ChunkIndex( |
| new int[] {20, 20, 20, 20, 20}, |
| new long[] {100, 120, 140, 160, 180}, |
| new long[] { |
| 100 * MS_IN_US, 100 * MS_IN_US, 100 * MS_IN_US, 100 * MS_IN_US, 100 * MS_IN_US |
| }, |
| new long[] {0, 100 * MS_IN_US, 200 * MS_IN_US, 300 * MS_IN_US, 400 * MS_IN_US}); |
| |
| @Mock private Cache cache; |
| private CachedRegionTracker tracker; |
| |
| private CachedContentIndex index; |
| private File cacheDir; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| when(cache.addListener(anyString(), any(Cache.Listener.class))).thenReturn(new TreeSet<>()); |
| tracker = new CachedRegionTracker(cache, CACHE_KEY, CHUNK_INDEX); |
| cacheDir = |
| Util.createTempDirectory(ApplicationProvider.getApplicationContext(), "ExoPlayerTest"); |
| index = new CachedContentIndex(TestUtil.getInMemoryDatabaseProvider()); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| Util.recursiveDelete(cacheDir); |
| } |
| |
| @Test |
| public void getRegion_noSpansInCache() { |
| assertThat(tracker.getRegionEndTimeMs(100)).isEqualTo(CachedRegionTracker.NOT_CACHED); |
| assertThat(tracker.getRegionEndTimeMs(150)).isEqualTo(CachedRegionTracker.NOT_CACHED); |
| } |
| |
| @Test |
| public void getRegion_fullyCached() throws Exception { |
| tracker.onSpanAdded(cache, newCacheSpan(100, 100)); |
| |
| assertThat(tracker.getRegionEndTimeMs(101)).isEqualTo(CachedRegionTracker.CACHED_TO_END); |
| assertThat(tracker.getRegionEndTimeMs(121)).isEqualTo(CachedRegionTracker.CACHED_TO_END); |
| } |
| |
| @Test |
| public void getRegion_partiallyCached() throws Exception { |
| tracker.onSpanAdded(cache, newCacheSpan(100, 40)); |
| |
| assertThat(tracker.getRegionEndTimeMs(101)).isEqualTo(200); |
| assertThat(tracker.getRegionEndTimeMs(121)).isEqualTo(200); |
| } |
| |
| @Test |
| public void getRegion_multipleSpanAddsJoinedCorrectly() throws Exception { |
| tracker.onSpanAdded(cache, newCacheSpan(100, 20)); |
| tracker.onSpanAdded(cache, newCacheSpan(120, 20)); |
| |
| assertThat(tracker.getRegionEndTimeMs(101)).isEqualTo(200); |
| assertThat(tracker.getRegionEndTimeMs(121)).isEqualTo(200); |
| } |
| |
| @Test |
| public void getRegion_fullyCachedThenPartiallyRemoved() throws Exception { |
| // Start with the full stream in cache. |
| tracker.onSpanAdded(cache, newCacheSpan(100, 100)); |
| |
| // Remove the middle bit. |
| tracker.onSpanRemoved(cache, newCacheSpan(140, 40)); |
| |
| assertThat(tracker.getRegionEndTimeMs(101)).isEqualTo(200); |
| assertThat(tracker.getRegionEndTimeMs(121)).isEqualTo(200); |
| |
| assertThat(tracker.getRegionEndTimeMs(181)).isEqualTo(CachedRegionTracker.CACHED_TO_END); |
| } |
| |
| @Test |
| public void getRegion_subchunkEstimation() throws Exception { |
| tracker.onSpanAdded(cache, newCacheSpan(100, 10)); |
| |
| assertThat(tracker.getRegionEndTimeMs(101)).isEqualTo(50); |
| assertThat(tracker.getRegionEndTimeMs(111)).isEqualTo(CachedRegionTracker.NOT_CACHED); |
| } |
| |
| private CacheSpan newCacheSpan(int position, int length) throws IOException { |
| int id = index.assignIdForKey(CACHE_KEY); |
| File cacheFile = createCacheSpanFile(cacheDir, id, position, length, 0); |
| return SimpleCacheSpan.createCacheEntry(cacheFile, length, index); |
| } |
| |
| public static File createCacheSpanFile( |
| File cacheDir, int id, long offset, int length, long lastTouchTimestamp) throws IOException { |
| File cacheFile = SimpleCacheSpan.getCacheFile(cacheDir, id, offset, lastTouchTimestamp); |
| createTestFile(cacheFile, length); |
| return cacheFile; |
| } |
| |
| private static void createTestFile(File file, int length) throws IOException { |
| FileOutputStream output = new FileOutputStream(file); |
| for (int i = 0; i < length; i++) { |
| output.write(i); |
| } |
| output.close(); |
| } |
| } |