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
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
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.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
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040: */
041:
042: package org.openide.util;
043:
044: import java.util.HashSet;
045: import java.util.List;
046: import java.util.Set;
047: import javax.swing.event.ChangeEvent;
048: import javax.swing.event.ChangeListener;
049: import org.netbeans.junit.NbTestCase;
050: import org.openide.util.test.MockChangeListener;
051:
052: /**
053: *
054: * @author Andrei Badea
055: */
056: public class ChangeSupportTest extends NbTestCase {
057:
058: public ChangeSupportTest(String testName) {
059: super (testName);
060: }
061:
062: public void testChangeSupport() {
063: final int[] changeCount = { 0 };
064: ChangeSupport support = new ChangeSupport(this );
065: MockChangeListener listener1 = new MockChangeListener(), listener2 = new MockChangeListener();
066:
067: support.addChangeListener(null);
068: assertFalse(support.hasListeners());
069:
070: support.removeChangeListener(null);
071: assertFalse(support.hasListeners());
072:
073: support.addChangeListener(listener1);
074: support.addChangeListener(listener2);
075: assertTrue(support.hasListeners());
076: Set<ChangeListener> listeners = new HashSet<ChangeListener>(
077: support.listeners);
078: assertEquals(2, listeners.size());
079: assertTrue(listeners.contains(listener1));
080: assertTrue(listeners.contains(listener2));
081:
082: support.fireChange();
083: List<ChangeEvent> events = listener1.allEvents();
084: assertEquals(1, events.size());
085: listener2.assertEventCount(1);
086: assertSame(this , events.iterator().next().getSource());
087:
088: support.removeChangeListener(new ChangeListener() {
089: public void stateChanged(ChangeEvent e) {
090: }
091: });
092: support.fireChange();
093: listener1.assertEventCount(1);
094: listener2.assertEventCount(1);
095:
096: support.removeChangeListener(listener1);
097: support.fireChange();
098: listener1.assertEventCount(0);
099: listener2.assertEventCount(1);
100:
101: support.addChangeListener(listener2);
102: support.fireChange();
103: listener2.assertEventCount(2);
104:
105: support.removeChangeListener(listener2);
106: support.fireChange();
107: listener2.assertEventCount(1);
108:
109: support.removeChangeListener(listener2);
110: support.fireChange();
111: listener2.assertEventCount(0);
112: assertFalse(support.hasListeners());
113: }
114: }
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