001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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014: * License. When distributing the software, include this License Header
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020: * License Header, with the fields enclosed by brackets [] replaced by
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022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
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025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
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033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
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035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
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040: */
041:
042: package org.openide.util;
043:
044: import java.beans.PropertyChangeEvent;
045: import java.beans.PropertyChangeListener;
046: import java.lang.ref.WeakReference;
047: import java.util.Vector;
048: import javax.naming.event.NamingEvent;
049: import javax.naming.event.NamingExceptionEvent;
050: import javax.naming.event.ObjectChangeListener;
051: import org.netbeans.junit.NbTestCase;
052:
053: public class WeakListenerTest extends NbTestCase {
054:
055: public WeakListenerTest(String testName) {
056: super (testName);
057: }
058:
059: public void testPrivateRemoveMethod() throws Exception {
060: PropChBean bean = new PropChBean();
061: Listener listener = new Listener();
062: PropertyChangeListener weakL = new PrivatePropL(listener, bean);
063: WeakReference ref = new WeakReference(listener);
064:
065: bean.addPCL(weakL);
066:
067: listener = null;
068: assertGC("Listener wasn't GCed", ref);
069:
070: ref = new WeakReference(weakL);
071: weakL = null;
072: assertGC("WeakListener wasn't GCed", ref);
073: }
074:
075: private static final class Listener implements
076: PropertyChangeListener, ObjectChangeListener {
077: public int cnt;
078:
079: public void propertyChange(PropertyChangeEvent ev) {
080: cnt++;
081: }
082:
083: public void namingExceptionThrown(NamingExceptionEvent evt) {
084: cnt++;
085: }
086:
087: public void objectChanged(NamingEvent evt) {
088: cnt++;
089: }
090: } // end of Listener
091:
092: private static class PropChBean {
093: private Vector listeners = new Vector();
094:
095: private void addPCL(PropertyChangeListener l) {
096: listeners.add(l);
097: }
098:
099: private void removePCL(PropertyChangeListener l) {
100: listeners.remove(l);
101: }
102: } // End of PropChBean class
103:
104: private static class PrivatePropL extends WeakListener implements
105: PropertyChangeListener {
106:
107: public PrivatePropL(PropertyChangeListener orig, Object source) {
108: super (PropertyChangeListener.class, orig);
109: setSource(source);
110: }
111:
112: protected String removeMethodName() {
113: return "removePCL"; // NOI18N
114: }
115:
116: // ---- PropertyChangeListener implementation
117:
118: public void propertyChange(PropertyChangeEvent evt) {
119: PropertyChangeListener l = (PropertyChangeListener) super
120: .get(evt);
121: if (l != null)
122: l.propertyChange(evt);
123: }
124: } // End of PrivatePropL class
125: }
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