test/jdk/javax/swing/JSlider/bug4382876.java

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/*
 * @test
 * @bug 4382876
 * @summary Tests how PgUp and PgDn keys work with JSlider
 * @key headful
 * @run main bug4382876
 */

import java.awt.BorderLayout;
import java.awt.ComponentOrientation;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Robot;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JSlider;
import javax.swing.SwingUtilities;

public class bug4382876 {
    private static Robot r;
    private static JFrame f;
    private static JSlider slider;
    private static boolean upFail;
    private static boolean downFail;

    public static void main(String[] args) throws Exception {
        try {
            SwingUtilities.invokeAndWait(() -> {
                f = new JFrame("JSlider PageUp/Down Test");
                f.setSize(300, 200);
                f.setLocationRelativeTo(null);
                f.setVisible(true);
                slider = new JSlider(-1000, -900, -1000);
                slider.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
                slider.putClientProperty("JSlider.isFilled", Boolean.TRUE);
                f.add(slider, BorderLayout.CENTER);
            });

            r = new Robot();
            r.setAutoDelay(100);
            r.waitForIdle();
            r.delay(1000);

            r.keyPress(KeyEvent.VK_PAGE_UP);
            SwingUtilities.invokeAndWait(() -> {
                if (slider.getValue() < -1000) {
                    System.out.println("PAGE_UP VAL: " + slider.getValue());
                    upFail = true;
                }
            });
            if (upFail) {
                writeFailImage();
                throw new RuntimeException("Slider value did NOT change with PAGE_UP");
            }
            r.keyPress(KeyEvent.VK_PAGE_DOWN);
            SwingUtilities.invokeAndWait(() -> {
                if (slider.getValue() > -1000) {
                    System.out.println("PAGE_DOWN VAL: " + slider.getValue());
                    downFail = true;
                }
            });
            if (downFail) {
                writeFailImage();
                throw new RuntimeException("Slider value did NOT change with PAGE_DOWN");
            }
        } finally {
            SwingUtilities.invokeAndWait(() -> {
                if (f != null) {
                    f.dispose();
                }
            });
        }
    }

    private static void writeFailImage() throws IOException {
        GraphicsConfiguration ge = GraphicsEnvironment
                .getLocalGraphicsEnvironment().getDefaultScreenDevice()
                .getDefaultConfiguration();
        BufferedImage failImage = r.createScreenCapture(ge.getBounds());
        ImageIO.write(failImage, "png", new File("failImage.png"));
    }
}