Test6397609.java

/*
 * Copyright (c) 2008, 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 6397609
 * @summary Tests autocleaning
 * @author Sergey Malenkov
 */

import java.beans.PropertyEditorManager;

public class Test6397609 {
    public static void main(String[] args) throws Exception {
        MemoryClassLoader loader = new MemoryClassLoader();
        PropertyEditorManager.registerEditor(
                Object.class,
                loader.compile("Editor",
                               "public class Editor extends java.beans.PropertyEditorSupport {}"));

        if (!isEditorExist(Object.class)) {
            throw new Error("the editor is lost");
        }
        loader = null; // clean the reference
        if (isEditorExist(Object.class)) {
            throw new Error("unexpected editor is found");
        }
    }

    private static boolean isEditorExist(Class type) {
        for (int i = 0; i < 10; i++) {
            System.gc(); // clean all weak references
            if (null == PropertyEditorManager.findEditor(type)) {
                return false;
            }
        }
        return true;
    }
}