Package com.sun.star.lib.util

Source Code of com.sun.star.lib.util.WeakMap_Test$Disposable

/*************************************************************************
*
*  OpenOffice.org - a multi-platform office productivity suite
*
*  $RCSfile: WeakMap_Test.java,v $
*
*  $Revision: 1.3 $
*
*  last change: $Author: rt $ $Date: 2005/09/08 13:27:32 $
*
*  The Contents of this file are made available subject to
*  the terms of GNU Lesser General Public License Version 2.1.
*
*
*    GNU Lesser General Public License Version 2.1
*    =============================================
*    Copyright 2005 by Sun Microsystems, Inc.
*    901 San Antonio Road, Palo Alto, CA 94303, USA
*
*    This library is free software; you can redistribute it and/or
*    modify it under the terms of the GNU Lesser General Public
*    License version 2.1, as published by the Free Software Foundation.
*
*    This library 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
*    Lesser General Public License for more details.
*
*    You should have received a copy of the GNU Lesser General Public
*    License along with this library; if not, write to the Free Software
*    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
*    MA  02111-1307  USA
*
************************************************************************/

package com.sun.star.lib.util;

import complexlib.ComplexTestCase;
import util.WaitUnreachable;

public final class WeakMap_Test extends ComplexTestCase {
    public String[] getTestMethodNames() {
        return new String[] { "test" };
    }

    public void test() {
        WeakMap m = new WeakMap();
        assure("", m.size() == 0);
        assure("", m.isEmpty());
        assure("", !m.containsKey("key1"));
        assure("", !m.containsValue(null));
        WaitUnreachable u1 = new WaitUnreachable(new Object());
        m.put("key1", u1.get());
        WaitUnreachable u2 = new WaitUnreachable(new Disposable());
        m.put("key2", u2.get());
        assure("", m.size() == 2);
        assure("", !m.isEmpty());
        assure("", m.containsKey("key1"));
        assure("", m.containsKey("key2"));
        assure("", !m.containsKey("key3"));
        assure("", m.containsValue(m.get("key1")));
        assure("", m.containsValue(m.get("key2")));
        assure("", WeakMap.getValue(m.get("key1")).equals(u1.get()));
        assure("", WeakMap.getValue(m.get("key2")).equals(u2.get()));
        assure("", m.values().size() == 2);
        assure("", m.values().contains(m.get("key1")));
        assure("", m.values().contains(m.get("key2")));
        u1.waitUnreachable();
        assure("", WeakMap.getValue(m.get("key1")) == null);
        ((Disposable) u2.get()).dispose();
        assure("", WeakMap.getValue(m.get("key2")) == null);
        m.clear();
        u2.waitUnreachable();
        assure("", m.size() == 0);
        m.put("key2", new Object());
        assure("", m.size() == 1);
    }

    // This simple class (single listener, no synchronization) exploits
    // knowledge about the implementation of WeakMap:
    private static final class Disposable implements DisposeNotifier {
        public void addDisposeListener(DisposeListener listener) {
            this.listener = listener;
        }

        public void dispose() {
            if (listener != null) {
                listener.notifyDispose(this);
            }
        }

        private DisposeListener listener = null;
    }
}
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