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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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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/*
 * @test
 * @key headful
 * @bug 6735293
 * @summary javax.swing.text.NavigationFilter.getNextVisualPositionFrom() not always throws BadLocationException
 * @author Pavel Porvatov
 */

import javax.swing.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.NavigationFilter;
import javax.swing.text.Position;

public class bug6735293 {
    private static volatile JFormattedTextField jtf;

    private static volatile NavigationFilter nf;

    private static volatile JFrame jFrame;

    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeAndWait(new Runnable() {
            public void run() {
                jtf = new JFormattedTextField();
                nf = new NavigationFilter();
                jtf.setText("A text message");

                jFrame = new JFrame();
                jFrame.getContentPane().add(jtf);
                jFrame.pack();
                jFrame.setVisible(true);
            }
        });

        Thread.sleep(1000);

        SwingUtilities.invokeAndWait(new Runnable() {
            public void run() {
                Position.Bias[] biasRet = {Position.Bias.Forward};

                for (int direction : new int[]{
                        SwingConstants.EAST,
                        SwingConstants.WEST,
                        //  the following constants still will lead to "BadLocationException: Length must be positive"
                        SwingConstants.SOUTH,
                        SwingConstants.NORTH,
                }) {
                    for (int position : new int[]{-100, Integer.MIN_VALUE}) {
                        for (Position.Bias bias : new Position.Bias[]{Position.Bias.Backward, Position.Bias.Forward}) {
                            try {
                                nf.getNextVisualPositionFrom(jtf, position, bias, direction, biasRet);

                                throw new RuntimeException("BadLocationException was not thrown: position = " +
                                        position + ", bias = " + bias + ", direction = " + direction);
                            } catch (BadLocationException e) {
                                // Ok
                            }
                        }
                    }
                }

                jFrame.dispose();
            }
        });
    }
}