91 lines
3.5 KiB
Java
91 lines
3.5 KiB
Java
/*
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* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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*
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*
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* Basic unit test for Instrumentation appendToBootstrapClassLoaderSearch and
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* appendToSystemClassLoaderSearch methods:
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*
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* 1. Adds a jar file to the bootstrap class loader search; Loads a class known
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* to be in the jar file and checks that it was loaded by the bootstrap class
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* loader.
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*
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* 2. Adds a jar file to the system class loader search; Loads a class known
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* to be in the jar file and checks that it was indeed loaded by the system
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* class loader.
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*/
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import java.lang.instrument.Instrumentation;
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import java.util.jar.JarFile;
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import java.io.IOException;
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public class BasicTest {
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// count of failures
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static int failures = 0;
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// check that the given class is loaded by the given loader
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static void checkLoadedByLoader(String name, ClassLoader loader) {
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try {
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Class cl = Class.forName(name);
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ClassLoader actual = cl.getClassLoader();
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String loaderName = (actual == null) ? "boot class loader" : actual.toString();
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if (actual != loader) {
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System.out.println("FAIL: " + name + " incorrectly loaded by: " + loaderName);
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failures++;
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} else {
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System.out.println("PASS: " + name + " loaded by: " + loaderName);
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}
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} catch (Exception x) {
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System.out.println("FAIL: Unable to load " + name + ":" + x);
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failures++;
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}
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}
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public static void main(String args[]) throws IOException {
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JarFile bootclasses = new JarFile("BootSupport.jar");
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JarFile agentclasses = new JarFile("AgentSupport.jar");
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Instrumentation ins = Agent.getInstrumentation();
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// Test 1: Add BootSupport.jar to boot class path and check that
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// BootSupport is loaded by the bootstrap class loader
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ins.appendToBootstrapClassLoaderSearch(bootclasses);
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checkLoadedByLoader("BootSupport", null);
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// Test 2: Add AgentSupport.jar to the system class path and check that
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// AgentSupport is loaded by the system class loader.
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try {
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ins.appendToSystemClassLoaderSearch(agentclasses);
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checkLoadedByLoader("AgentSupport", ClassLoader.getSystemClassLoader());
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} catch (UnsupportedOperationException x) {
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System.out.println("System class loader does not support adding to class path");
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}
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// throw exception if a test failed
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if (failures > 0) {
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throw new RuntimeException(failures + " test(s) failed.");
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}
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}
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}
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