WrongBackgroundColor.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.awt.Color;
import java.lang.reflect.InvocationTargetException;

import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.plaf.ColorUIResource;

/**
 * @test
 * @key headful
 * @bug 8033786
 * @summary JDialog should update background color of the native peer.
 * @author Sergey Bylokhov
 */
public final class WrongBackgroundColor {

    public static void main(final String[] args)
            throws InvocationTargetException, InterruptedException {
        SwingUtilities.invokeAndWait(() -> {
            UIDefaults ui = UIManager.getDefaults();
            ui.put("control", new ColorUIResource(54, 54, 54));
            final JDialog dialog = new JDialog();
            final JFrame frame = new JFrame();
            frame.pack();
            dialog.pack();
            final Color dialogBackground = dialog.getBackground();
            final Color frameBackground = frame.getBackground();
            frame.dispose();
            dialog.dispose();
            if (!dialogBackground.equals(frameBackground)) {
                System.err.println("Expected:" + frameBackground);
                System.err.println("Actual:" + dialogBackground);
                throw new RuntimeException("Wrong background color");
            }
        });
    }
}