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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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import java.awt.BorderLayout;
import java.awt.Robot;
import java.awt.event.KeyEvent;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

/*
 * @test
 * @bug 4459267
 * @summary Tests that pressing PageUp in combo popup list doesn't cause
 *          stack overflow
 * @key headful
 * @run main bug4459267
 */

public class bug4459267 {
    static JFrame frame;

    public static void main(String[] args) throws Exception {
        try {
            Robot robot = new Robot();
            robot.setAutoDelay(250);

            SwingUtilities.invokeAndWait(() -> createTestUI());
            robot.waitForIdle();
            robot.delay(1000);

            robot.keyPress(KeyEvent.VK_PAGE_UP);
            robot.keyRelease(KeyEvent.VK_PAGE_UP);
            robot.waitForIdle();
        } finally {
            SwingUtilities.invokeAndWait(() -> {
                if (frame != null) {
                    frame.dispose();
                }
            });
        }
    }

    public static void createTestUI() {
        frame = new JFrame("bug4459267");
        JComboBox jcmb = new JComboBox();
        jcmb.addItem("JComobo1");
        jcmb.addItem("Item2");
        jcmb.addItem("Item3");
        frame.getContentPane().add(jcmb, BorderLayout.NORTH);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}