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/*

 * @test

 * @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();

            }

        });

    }

}