01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
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40: */
41: package org.netbeans.modules.timers;
42:
43: import java.lang.ref.WeakReference;
44: import javax.swing.event.ChangeEvent;
45: import javax.swing.event.ChangeListener;
46: import org.netbeans.junit.NbTestCase;
47:
48: /**
49: *
50: * @author Petr Hrebejk
51: */
52: public class InstanceWatcherTest extends NbTestCase {
53:
54: public InstanceWatcherTest(String testName) {
55: super (testName);
56: }
57:
58: public void testFiring() throws Exception {
59: System.out.println("addChangeListener");
60:
61: QueueListener listener = new QueueListener();
62: InstanceWatcher iw = new InstanceWatcher();
63:
64: iw.addChangeListener(listener);
65:
66: Integer ts1 = new Integer(20);
67: iw.add(ts1);
68:
69: WeakReference tmp; // For forcing GC
70:
71: tmp = new WeakReference(new Object());
72: assertGC("", tmp);
73:
74: assertEquals("There should be no change in the queue", 0,
75: listener.changeCount);
76:
77: ts1 = null; // Remove hard reference
78:
79: tmp = new WeakReference(new Object());
80: assertGC("", tmp); // Do garbage collect
81:
82: assertEquals("There should be one change in the queue", 1,
83: listener.changeCount);
84:
85: }
86:
87: private static class QueueListener implements ChangeListener {
88:
89: int changeCount;
90:
91: public void stateChanged(ChangeEvent e) {
92: changeCount++;
93: }
94:
95: }
96:
97: }
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