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