Test6437265.java example

Explorer
openjdk8-jdk-master
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 * accompanied this code).
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 * 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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/*
 * @test
 * @bug 6437265
 * @summary Tests encoding of container with BorderLayout
 * @author Sergey Malenkov
 */

import java.awt.BorderLayout;
import java.awt.Component;
import javax.swing.JLabel;
import javax.swing.JPanel;

public final class Test6437265 extends AbstractTest<JPanel> {
    private static final String[] NAMES = {
            BorderLayout.EAST,
            BorderLayout.WEST,
            BorderLayout.NORTH,
            BorderLayout.SOUTH,
            BorderLayout.CENTER,
            BorderLayout.LINE_END,
            BorderLayout.PAGE_END,
            BorderLayout.LINE_START,
            BorderLayout.PAGE_START};

    public static void main(String[] args) {
        new Test6437265().test(true);
    }

    protected JPanel getObject() {
        JPanel panel = new MyPanel();
        for (String name : NAMES) {
            panel.add(name, new JLabel(name));
        }
        return panel;
    }

    protected void validate(JPanel before, JPanel after) {
        validate(before);
        validate(after);
        super.validate(before, after);
    }

    private static void validate(JPanel panel) {
        BorderLayout layout = (BorderLayout) panel.getLayout();
        for (Component component : panel.getComponents()) {
            String name = (String) layout.getConstraints(component);
            if (name == null)
                throw new Error("The component is not layed out: " + component);

            JLabel label = (JLabel) component;
            if (!name.equals(label.getText()))
                throw new Error("The component is layed out on " + name + ": " + component);
        }
    }

    public static final class MyPanel extends JPanel {
        public MyPanel() {
            // the bug is reproducible for containers
            // that uses BorderLayout as default layout manager.
            super(new BorderLayout(3, 3));
        }
    }
}