util/prefs/AddNodeChangeListener.java

	AddNodeChangeListener.java revision 5853
0N/A/*
2362N/A * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
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0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
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0N/A */
0N/A
0N/A /* @test
0N/A  * @bug  7160252 7197662
0N/A  * @summary Checks if events are delivered to a listener
0N/A  *          when a child node is added or removed
0N/A  * @run main/othervm -Djava.util.prefs.userRoot=. AddNodeChangeListener
0N/A  */
0N/A
0N/Aimport java.util.prefs.*;
0N/A
0N/A public class AddNodeChangeListener {
0N/A
0N/A     private static boolean failed = false;
0N/A     private static Preferences userRoot, N2;
0N/A     private static NodeChangeListenerAdd ncla;
0N/A
0N/A     public static void main(String[] args)
0N/A         throws BackingStoreException, InterruptedException
0N/A     {
        userRoot = Preferences.userRoot();
        ncla = new NodeChangeListenerAdd();
        userRoot.addNodeChangeListener(ncla);
        //Should initiate a node added event
        addNode();
        // Should not initiate a node added event
        addNode();
        //Should initate a child removed event
        removeNode();

        if (failed)
            throw new RuntimeException("Failed");
    }

    private static void addNode()
        throws BackingStoreException, InterruptedException
    {
        N2 = userRoot.node("N2");
        userRoot.flush();
        Thread.sleep(3000);
        if (ncla.getAddNumber() != 1)
            failed = true;
    }

    private static void removeNode()
        throws BackingStoreException, InterruptedException
    {
        N2.removeNode();
        userRoot.flush();
        Thread.sleep(3000);
        if (ncla.getAddNumber() != 0)
            failed = true;
    }

    private static class NodeChangeListenerAdd implements NodeChangeListener {
        private int totalNode = 0;

        @Override
        public void childAdded(NodeChangeEvent evt) {
            totalNode++;
        }

        @Override
        public void childRemoved(NodeChangeEvent evt) {
            totalNode--;
        }

        public int getAddNumber(){
            return totalNode;
        }
    }
 }