1/*
2 * Copyright (c) 2004, 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/*
25 * @test
26 * @bug 4646747
27 * @summary Tests that persistence delegate is correct after memory stress
28 * @author Mark Davidson
29 * @run main/othervm -ms16m -mx16m Test4646747
30 */
31
32import java.beans.DefaultPersistenceDelegate;
33import java.beans.PersistenceDelegate;
34import java.beans.XMLEncoder;
35
36/**
37 * This bug was introduced in 1.4 FCS but was working in 1.4.beta3
38 */
39public class Test4646747 {
40    public static void main(String[] args) {
41        XMLEncoder encoder = new XMLEncoder(System.out);
42        encoder.setPersistenceDelegate(Test4646747.class, new MyPersistenceDelegate());
43        // WARNING: This can eat up a lot of memory
44        Object[] obs = new Object[10000];
45        while (obs != null) {
46            try {
47                obs = new Object[obs.length + obs.length / 3];
48            }
49            catch (OutOfMemoryError error) {
50                obs = null;
51            }
52        }
53        PersistenceDelegate pd = encoder.getPersistenceDelegate(Test4646747.class);
54        if (!(pd instanceof MyPersistenceDelegate))
55            throw new Error("persistence delegate has been lost");
56    }
57
58    private static class MyPersistenceDelegate extends DefaultPersistenceDelegate {
59    }
60}
61