1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tools.build.apkzlib.utils; 18 19 import static org.junit.Assert.assertFalse; 20 import static org.junit.Assert.assertNull; 21 import static org.junit.Assert.assertSame; 22 import static org.junit.Assert.assertTrue; 23 24 import com.google.common.base.Charsets; 25 import com.google.common.io.Files; 26 import java.io.File; 27 import org.junit.Rule; 28 import org.junit.Test; 29 import org.junit.rules.TemporaryFolder; 30 31 public class CachedFileContentsTest { 32 @Rule 33 public TemporaryFolder mTemporaryFolder = new TemporaryFolder(); 34 35 @Test 36 public void createFileAndCheckWithNoChanges() throws Exception { 37 File f = mTemporaryFolder.newFile("test"); 38 Files.write("abc", f, Charsets.US_ASCII); 39 40 Object cache = new Object(); 41 42 CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); 43 cachedFile.closed(cache); 44 45 assertTrue(cachedFile.isValid()); 46 assertSame(cache, cachedFile.getCache()); 47 } 48 49 @Test 50 public void createFileAndCheckChanges() throws Exception { 51 File f = mTemporaryFolder.newFile("test"); 52 Files.write("abc", f, Charsets.US_ASCII); 53 54 Object cache = new Object(); 55 56 CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); 57 cachedFile.closed(cache); 58 59 Files.write("def", f, Charsets.US_ASCII); 60 61 assertFalse(cachedFile.isValid()); 62 assertNull(cachedFile.getCache()); 63 } 64 65 @Test 66 public void createFileUpdateAndCheckChanges() throws Exception { 67 File f = mTemporaryFolder.newFile("test"); 68 Files.write("abc", f, Charsets.US_ASCII); 69 70 Object cache = new Object(); 71 72 CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); 73 cachedFile.closed(cache); 74 75 Files.write("def", f, Charsets.US_ASCII); 76 cachedFile.closed(cache); 77 78 assertTrue(cachedFile.isValid()); 79 assertSame(cache, cachedFile.getCache()); 80 } 81 82 @Test 83 public void immediateChangesDetected() throws Exception { 84 File f = mTemporaryFolder.newFile("foo"); 85 Files.write("bar", f, Charsets.US_ASCII); 86 87 CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); 88 cachedFile.closed(null); 89 90 Files.write("xpto", f, Charsets.US_ASCII); 91 assertFalse(cachedFile.isValid()); 92 } 93 94 @Test 95 public void immediateChangesDetectedEvenWithHackedTs() throws Exception { 96 File f = mTemporaryFolder.newFile("foo"); 97 Files.write("bar", f, Charsets.US_ASCII); 98 99 CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); 100 cachedFile.closed(null); 101 long lastTs = f.lastModified(); 102 103 Files.write("xpto", f, Charsets.US_ASCII); 104 f.setLastModified(lastTs); 105 assertFalse(cachedFile.isValid()); 106 } 107 108 @Test 109 public void immediateChangesWithNoContentChangeNotDetected() throws Exception { 110 File f = mTemporaryFolder.newFile("foo"); 111 Files.write("bar", f, Charsets.US_ASCII); 112 113 CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); 114 cachedFile.closed(null); 115 long lastTs = f.lastModified(); 116 117 Files.write("bar", f, Charsets.US_ASCII); 118 f.setLastModified(lastTs); 119 assertTrue(cachedFile.isValid()); 120 } 121 } 122
