jdk/test/java/beans/XMLEncoder/Test4646747.java
author malenkov
Fri, 05 Feb 2010 10:36:12 +0300
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child 5506 202f599c92aa
permissions -rw-r--r--
6921057: REGRESSION: persistence delegate issue on Windows and Linux against 5.u23b03/6u17b11 Reviewed-by: peterz, art
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/*
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 * Copyright 2004-2010 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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/*
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 * @test
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 * @bug 4646747
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 * @summary Tests that persistence delegate is correct after memory stress
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 * @author Mark Davidson
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 * @run main/othervm -ms16m -mx16m Test4646747
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 */
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import java.beans.DefaultPersistenceDelegate;
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import java.beans.PersistenceDelegate;
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import java.beans.XMLEncoder;
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/**
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 * This bug was introduced in 1.4 FCS but was working in 1.4.beta3
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 */
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public class Test4646747 {
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    public static void main(String[] args) {
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        XMLEncoder encoder = new XMLEncoder(System.out);
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        encoder.setPersistenceDelegate(Test4646747.class, new MyPersistenceDelegate());
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        // WARNING: This can eat up a lot of memory
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        Object[] obs = new Object[10000];
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        while (obs != null) {
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            try {
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                obs = new Object[obs.length + obs.length / 3];
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            }
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            catch (OutOfMemoryError error) {
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                obs = null;
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            }
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        }
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        PersistenceDelegate pd = encoder.getPersistenceDelegate(Test4646747.class);
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        if (!(pd instanceof MyPersistenceDelegate))
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            throw new Error("persistence delegate has been lost");
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    }
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    private static class MyPersistenceDelegate extends DefaultPersistenceDelegate {
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    }
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}