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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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.Robot;
import java.awt.event.KeyEvent;
import javax.swing.BoxLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

/*
 * @test
 * @bug 4248128 7148092
 * @summary Tests that alt+down arrow pulls down JComboBox popup
 * @key headful
 * @run main bug4248128
 */

public class bug4248128 {
    static JFrame frame;
    static volatile JComboBox combo;

    public static void main(String[] args) throws Exception {
        try {
            Robot robot = new Robot();
            robot.setAutoDelay(250);
            SwingUtilities.invokeAndWait(() -> createTestUI());
            robot.waitForIdle();

            robot.keyPress(KeyEvent.VK_ALT);
            robot.keyPress(KeyEvent.VK_DOWN);
            robot.keyRelease(KeyEvent.VK_DOWN);
            robot.keyRelease(KeyEvent.VK_ALT);
            robot.waitForIdle();

            SwingUtilities.invokeAndWait(() -> {
                if (!combo.isPopupVisible()) {
                    throw new RuntimeException("Popup did not appear.");
                }
            });
        } finally {
            SwingUtilities.invokeAndWait(() -> {
                if (frame != null) {
                    frame.dispose();
                }
            });
        }
    }

    public static void createTestUI() {
        frame = new JFrame("4248128 Test");
        Object[] fruits = {"Banana", "Pear", "Apple"};
        combo = new JComboBox(fruits);
        frame.setLayout(new BoxLayout(frame.getContentPane(), BoxLayout.X_AXIS));
        frame.add(combo);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}