1/*
2 * Copyright (c) 2003, 2010, 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/* @test
25 * @bug 4838310
26 * @summary This test verifies that the restrictions on proxy interface
27 * methods with the same signature but different return types are
28 * correctly enforced.
29 * @author Peter Jones
30 *
31 * @build GetObject GetSerializable GetCloneable GetArray
32 * @run main Test
33 */
34
35import java.lang.reflect.Proxy;
36import java.security.PrivilegedAction;
37import java.util.Arrays;
38import java.util.Collection;
39import java.util.List;
40
41public class Test {
42
43    // additional test cases may be added to both of these lists:
44
45    private static final Class<?>[][] GOOD = {
46        { Collection.class },
47        { Iterable.class, Collection.class },
48        { Iterable.class, Collection.class, List.class },
49        { GetSerializable.class, GetCloneable.class, GetArray.class },
50        { GetObject.class, GetSerializable.class, GetCloneable.class,
51          GetArray.class }
52    };
53
54    private static final Class<?>[][] BAD = {
55        { Runnable.class, PrivilegedAction.class },
56        { GetSerializable.class, GetCloneable.class },
57        { GetObject.class, GetSerializable.class, GetCloneable.class }
58    };
59
60    public static void main(String[] args) throws Exception {
61        System.err.println("\nRegression test for bug 4838310\n");
62
63        ClassLoader loader = Test.class.getClassLoader();
64
65        System.err.println("Testing GOOD combinations:");
66
67        for (int i = 0; i < GOOD.length; i++) {
68            Class<?>[] interfaces = GOOD[i];
69            System.err.println(Arrays.asList(interfaces));
70            Proxy.getProxyClass(loader, interfaces);
71            System.err.println("--- OK.");
72        }
73
74        System.err.println("Testing BAD combinations:");
75
76        for (int i = 0; i < BAD.length; i++) {
77            Class<?>[] interfaces = BAD[i];
78            System.err.println(Arrays.asList(interfaces));
79            try {
80                Proxy.getProxyClass(loader, interfaces);
81                throw new RuntimeException(
82                    "TEST FAILED: bad combination succeeded");
83            } catch (IllegalArgumentException e) {
84                e.printStackTrace();
85                System.err.println("--- OK.");
86            }
87        }
88
89        System.err.println("TEST PASSED");
90    }
91}
92