| /* |
| * 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.android.tools.build.apkzlib.utils; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.google.common.base.Charsets; |
| import com.google.common.io.Files; |
| import java.io.File; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class CachedFileContentsTest { |
| @Rule |
| public TemporaryFolder mTemporaryFolder = new TemporaryFolder(); |
| |
| @Test |
| public void createFileAndCheckWithNoChanges() throws Exception { |
| File f = mTemporaryFolder.newFile("test"); |
| Files.write("abc", f, Charsets.US_ASCII); |
| |
| Object cache = new Object(); |
| |
| CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); |
| cachedFile.closed(cache); |
| |
| assertTrue(cachedFile.isValid()); |
| assertSame(cache, cachedFile.getCache()); |
| } |
| |
| @Test |
| public void createFileAndCheckChanges() throws Exception { |
| File f = mTemporaryFolder.newFile("test"); |
| Files.write("abc", f, Charsets.US_ASCII); |
| |
| Object cache = new Object(); |
| |
| CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); |
| cachedFile.closed(cache); |
| |
| Files.write("def", f, Charsets.US_ASCII); |
| |
| assertFalse(cachedFile.isValid()); |
| assertNull(cachedFile.getCache()); |
| } |
| |
| @Test |
| public void createFileUpdateAndCheckChanges() throws Exception { |
| File f = mTemporaryFolder.newFile("test"); |
| Files.write("abc", f, Charsets.US_ASCII); |
| |
| Object cache = new Object(); |
| |
| CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); |
| cachedFile.closed(cache); |
| |
| Files.write("def", f, Charsets.US_ASCII); |
| cachedFile.closed(cache); |
| |
| assertTrue(cachedFile.isValid()); |
| assertSame(cache, cachedFile.getCache()); |
| } |
| |
| @Test |
| public void immediateChangesDetected() throws Exception { |
| File f = mTemporaryFolder.newFile("foo"); |
| Files.write("bar", f, Charsets.US_ASCII); |
| |
| CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); |
| cachedFile.closed(null); |
| |
| Files.write("xpto", f, Charsets.US_ASCII); |
| assertFalse(cachedFile.isValid()); |
| } |
| |
| @Test |
| public void immediateChangesDetectedEvenWithHackedTs() throws Exception { |
| File f = mTemporaryFolder.newFile("foo"); |
| Files.write("bar", f, Charsets.US_ASCII); |
| |
| CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); |
| cachedFile.closed(null); |
| long lastTs = f.lastModified(); |
| |
| Files.write("xpto", f, Charsets.US_ASCII); |
| f.setLastModified(lastTs); |
| assertFalse(cachedFile.isValid()); |
| } |
| |
| @Test |
| public void immediateChangesWithNoContentChangeNotDetected() throws Exception { |
| File f = mTemporaryFolder.newFile("foo"); |
| Files.write("bar", f, Charsets.US_ASCII); |
| |
| CachedFileContents<Object> cachedFile = new CachedFileContents<>(f); |
| cachedFile.closed(null); |
| long lastTs = f.lastModified(); |
| |
| Files.write("bar", f, Charsets.US_ASCII); |
| f.setLastModified(lastTs); |
| assertTrue(cachedFile.isValid()); |
| } |
| } |