blob: 193fd5dea05da3bd68fa642d24cce49e397385cc [file] [log] [blame]
/*
* Copyright (C) 2015 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.
*/
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
/**
* PathClassLoader test.
*/
public class Main {
private static ClassLoader createClassLoader(String dexPath, ClassLoader parent) {
try {
Class<?> myClassLoaderClass = Class.forName("MyPathClassLoader");
Constructor<?> constructor = myClassLoaderClass.getConstructor(String.class,
ClassLoader.class);
return (ClassLoader)constructor.newInstance(dexPath, parent);
} catch (Exception e) {
// Ups, not available?!?!
throw new RuntimeException(e);
}
}
/**
* Main entry point.
*/
public static void main(String[] args) throws Exception {
// Check the class-path for the second file. We'll use that one as the source of the
// new classloader.
String cp = System.getProperty("java.class.path");
if (cp.split(System.getProperty("path.separator")).length != 1) {
throw new IllegalStateException("Didn't find exactly one classpath element in " + cp);
}
if (!cp.endsWith("classloader2.jar")) {
throw new IllegalStateException("Don't understand classpath " + cp);
}
cp = cp.replace("classloader2.jar", "classloader2-ex.jar");
ClassLoader myClassLoader = createClassLoader(
cp, ClassLoader.getSystemClassLoader().getParent());
// Now load our test class.
Class<?> srcClass = A.class;
Class<?> exClass = myClassLoader.loadClass("A");
// First check: classes should be different.
if (srcClass == exClass) {
throw new IllegalStateException("Loaded class instances are the same");
}
// Secondary checks: get the static field values and make sure they aren't the same.
String srcValue = (String)srcClass.getDeclaredField("value").get(null);
if (!"Src-A".equals(srcValue)) {
throw new IllegalStateException("Expected Src-A, found " + srcValue);
}
String exValue = (String)exClass.getDeclaredField("value").get(null);
if (!"Ex-A".equals(exValue)) {
throw new IllegalStateException("Expected Ex-A, found " + exValue);
}
// Try to load a dex file with bad dex code. Use new instance to force verification.
try {
Class<?> badClass = Main.class.getClassLoader().loadClass("B");
System.out.println("Loaded class B.");
badClass.newInstance();
System.out.println("Should not be able to instantiate B with bad dex bytecode.");
} catch (VerifyError e) {
System.out.println("Caught VerifyError.");
}
// Make sure the same error is rethrown when reloading the bad class.
try {
Class<?> badClass = Main.class.getClassLoader().loadClass("B");
System.out.println("Loaded class B.");
badClass.newInstance();
System.out.println("Should not be able to instantiate B with bad dex bytecode.");
} catch (NoClassDefFoundError e) {
if (e.getCause() instanceof VerifyError) {
System.out.println("Caught wrapped VerifyError.");
} else {
e.printStackTrace(System.out);
}
}
System.out.println("Everything OK.");
}
}