test/jdk/java/beans/XMLEncoder/Test4646747.java - master - githubmirror/jdk17u-dev

test/jdk/java/beans/XMLEncoder/Test4646747.java

59 строк2 KB

Goetz Lindenmaier

8339834: Replace usages of -mx and -ms in some tests

09 июл 2025, 08:22

09 июл 2025, 08:22d542d47

/*
 * Copyright (c) 2004, 2024, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 4646747
 * @summary Tests that persistence delegate is correct after memory stress
 * @run main/othervm -Xms16m -Xmx16m Test4646747
 */

import java.beans.DefaultPersistenceDelegate;
import java.beans.PersistenceDelegate;
import java.beans.XMLEncoder;

/**
 * This bug was introduced in 1.4 FCS but was working in 1.4.beta3
 */
public class Test4646747 {
    public static void main(String[] args) {
        XMLEncoder encoder = new XMLEncoder(System.out);
        encoder.setPersistenceDelegate(Test4646747.class, new MyPersistenceDelegate());
        // WARNING: This can eat up a lot of memory
        Object[] obs = new Object[10000];
        while (obs != null) {
            try {
                obs = new Object[obs.length + obs.length / 3];
            }
            catch (OutOfMemoryError error) {
                obs = null;
            }
        }
        PersistenceDelegate pd = encoder.getPersistenceDelegate(Test4646747.class);
        if (!(pd instanceof MyPersistenceDelegate))
            throw new Error("persistence delegate has been lost");
    }

    private static class MyPersistenceDelegate extends DefaultPersistenceDelegate {
    }
}