1/* 2 * Copyright (C) 2010 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 17package libcore.dalvik.system; 18 19import dalvik.system.PathClassLoader; 20import java.lang.reflect.Method; 21import java.io.File; 22import java.io.FileOutputStream; 23import java.io.IOException; 24import java.io.InputStream; 25import libcore.io.Streams; 26import junit.framework.TestCase; 27 28public final class PathClassLoaderTest extends TestCase { 29 30 /** 31 * Make sure we're searching the application library path first. 32 * http://b/issue?id=2933456 33 */ 34 public void testLibraryPathSearchOrder() throws IOException { 35 File tmp = new File(System.getProperty("java.io.tmpdir")); 36 File systemLibPath = new File(tmp, "systemLibPath"); 37 File applicationLibPath = new File(tmp, "applicationLibPath"); 38 makeTempFile(systemLibPath, "libduplicated.so"); 39 File applicationLib = makeTempFile(applicationLibPath, "libduplicated.so"); 40 41 System.setProperty("java.library.path", systemLibPath.toString()); 42 PathClassLoader pathClassLoader = new PathClassLoader(applicationLibPath.toString(), 43 applicationLibPath.toString(), getClass().getClassLoader()); 44 45 String path = pathClassLoader.findLibrary("duplicated"); 46 assertEquals(applicationLib.toString(), path); 47 } 48 49 private File makeTempFile(File directory, String name) throws IOException { 50 directory.mkdirs(); 51 File result = new File(directory, name); 52 FileOutputStream stream = new FileOutputStream(result); 53 stream.close(); 54 assertTrue(result.exists()); 55 return result; 56 } 57 58 public void testAppUseOfPathClassLoader() throws Exception { 59 // Extract loading-test.jar from the resource. 60 ClassLoader pcl = PathClassLoaderTest.class.getClassLoader(); 61 File jar = File.createTempFile("loading-test", ".jar"); 62 try (InputStream in = pcl.getResourceAsStream("dalvik/system/loading-test.jar"); 63 FileOutputStream out = new FileOutputStream(jar)) { 64 Streams.copy(in, out); 65 } 66 67 // Execute code from the jar file using a PathClassLoader. 68 PathClassLoader cl = new PathClassLoader(jar.getPath(), pcl); 69 Class c = cl.loadClass("test.Test1"); 70 Method m = c.getMethod("test", (Class[]) null); 71 String result = (String) m.invoke(null, (Object[]) null); 72 assertSame("blort", result); 73 74 // Clean up the extracted jar file. 75 assertTrue(jar.delete()); 76 } 77 78 @Override protected void setUp() throws Exception { 79 super.setUp(); 80 } 81 82 @Override protected void tearDown() throws Exception { 83 super.tearDown(); 84 } 85} 86