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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
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22  */
23 
24 /* @test
25  * @bug 6493680
26  * @summary Tests if notifications are received in expected order
27  * @author Igor Kushnirskiy
28  */
29 
30 import javax.swing.*;
31 import java.beans.*;
32 import java.util.concurrent.atomic.*;
33 import java.util.concurrent.*;
34 
35 
36 public class bug6493680 {
37     /*
38      * because timing is involved in this bug we will run the test
39      * NUMBER_OF_TRIES times.
40      * the test passes if it does not fail once.
41      */
42     private final static int NUMBER_OF_TRIES = 50;
43 
main(String[] args)44     public static void main(String[] args) throws Exception {
45         for (int i = 0; i < NUMBER_OF_TRIES; i++) {
46             if (! (new Test()).test()) {
47                 throw new RuntimeException("failed");
48             }
49         }
50     }
51 
52     private static class Test {
53         private final AtomicInteger lastProgressValue = new AtomicInteger(-1);
54         private final Exchanger<Boolean> exchanger = new Exchanger<Boolean>();
55 
test()56         boolean test() throws Exception {
57             TestSwingWorker swingWorker = new TestSwingWorker();
58             swingWorker.addPropertyChangeListener(
59                 new PropertyChangeListener() {
60                     public void propertyChange(PropertyChangeEvent evt) {
61                         if ("progress" == evt.getPropertyName()) {
62                             lastProgressValue.set((Integer) evt.getNewValue());
63                         }
64                     }
65                 });
66 
67             swingWorker.execute();
68             return exchanger.exchange(true);
69         }
70 
71         private class TestSwingWorker extends SwingWorker<Void, Void> {
72             @Override
doInBackground()73             protected Void doInBackground() throws Exception {
74                 for (int i = 0; i <= 100; i++) {
75                     Thread.sleep(1);
76                     setProgress(i);
77                 }
78                 return null;
79             }
80             @Override
done()81             protected void done() {
82                 boolean isPassed = (lastProgressValue.get() == 100);
83                 try {
84                     exchanger.exchange(isPassed);
85                 } catch (Exception ingore) {
86                 }
87             }
88         }
89     }
90 
91 }
92