1/* 2 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * 26 * 27 * Unit test for Instrumentation appendToBootstrapClassLoaderSearch: 28 * 29 * 1. Reference class A. Resolving this class should fail with 30 * ClassCircularityError. 31 * 32 * 2. Add JAR file to boot class path which contains a "good" 33 * version of A. 34 * 35 * 3. Re-run the code for 1 again - it should fail with 36 * ClassCircularityError again. 37 */ 38import java.lang.instrument.Instrumentation; 39import java.util.jar.JarFile; 40 41public class CircularityErrorTest { 42 43 static Instrumentation ins; 44 45 static void resolve() { 46 try { 47 Class c = A.class; 48 throw new RuntimeException("Test failed - class A loaded by: " + 49 c.getClassLoader()); 50 } catch (ClassCircularityError e) { 51 System.err.println(e); 52 } 53 } 54 55 public static void main(String args[]) throws Exception { 56 resolve(); 57 ins.appendToBootstrapClassLoaderSearch(new JarFile("A.jar")); 58 resolve(); 59 } 60 61 public static void premain(String args, Instrumentation i) { 62 ins = i; 63 } 64} 65