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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.lib.util;
import org.junit.Test;
import util.WaitUnreachable;
import static org.junit.Assert.*;
public final class WeakMap_Test {
@Test public void test() {
WeakMap m = new WeakMap();
assertEquals(0, m.size());
assertTrue(m.isEmpty());
assertFalse(m.containsKey("key1"));
assertFalse(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());
assertEquals(2, m.size());
assertFalse(m.isEmpty());
assertTrue(m.containsKey("key1"));
assertTrue(m.containsKey("key2"));
assertFalse(m.containsKey("key3"));
assertTrue(m.containsValue(m.get("key1")));
assertTrue(m.containsValue(m.get("key2")));
assertEquals(u1.get(), WeakMap.getValue(m.get("key1")));
assertEquals(u2.get(), WeakMap.getValue(m.get("key2")));
assertEquals(2, m.values().size());
assertTrue(m.values().contains(m.get("key1")));
assertTrue(m.values().contains(m.get("key2")));
u1.waitUnreachable();
assertNull(WeakMap.getValue(m.get("key1")));
((Disposable) u2.get()).dispose();
assertNull(WeakMap.getValue(m.get("key2")));
m.clear();
u2.waitUnreachable();
assertEquals(0, m.size());
m.put("key2", new Object());
assertEquals(1, m.size());
}
// 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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