/* ===========================================================

 * JFreeChart : a free chart library for the Java(tm) platform

 * ===========================================================

 *

 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.

 *

 * Project Info:  http://www.jfree.org/jfreechart/index.html

 *

 * This library is free software; you can redistribute it and/or modify it under the terms

 * of the GNU Lesser General Public License as published by the Free Software Foundation;

 * either version 2.1 of the License, or (at your option) any later version.

 *

 * This library 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 Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License along with this

 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,

 * Boston, MA 02111-1307, USA.

 *

 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 

 * in the United States and other countries.]

 *

 * ---------------

 * RangeTests.java

 * ---------------

 * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors.

 *

 * Original Author:  David Gilbert (for Object Refinery Limited);

 * Contributor(s):   -;

 *

 * $Id: RangeTests.java,v 1.1 2004/08/31 15:31:05 mungady Exp $

 *

 * Changes

 * -------

 * 14-Aug-2003 : Version 1 (DG);

 *

 */



package org.jfree.data.junit;



import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.ObjectInput;

import java.io.ObjectInputStream;

import java.io.ObjectOutput;

import java.io.ObjectOutputStream;



import junit.framework.Test;

import junit.framework.TestCase;

import junit.framework.TestSuite;



import org.jfree.data.Range;



/**

 * Tests for the {@link Range} class.

 */

public class RangeTests extends TestCase {



    /**

     * Returns the tests as a test suite.

     *

     * @return The test suite.

     */

    public static Test suite() {

        return new TestSuite(RangeTests.class);

    }



    /**

     * Constructs a new set of tests.

     *

     * @param name  the name of the tests.

     */

    public RangeTests(final String name) {

        super(name);

    }



    /**

     * Confirm that the equals method can distinguish all the required fields.

     */

    public void testEquals() {

        

        Range r1 = new Range(0.0, 1.0);

        Range r2 = new Range(0.0, 1.0);

        assertEquals(r1, r2);

        assertEquals(r2, r1);



        r1 = new Range(0.0, 1.0);

        r2 = new Range(0.5, 1.0);

        assertFalse(r1.equals(r2));



        r1 = new Range(0.0, 1.0);

        r2 = new Range(0.0, 2.0);

        assertFalse(r1.equals(r2));

        

    }

    

    /**

     * Simple tests for the contains() method.

     */

    public void testContains() {

        Range r1 = new Range(0.0, 1.0);

        assertFalse(r1.contains(Double.NaN));

        assertFalse(r1.contains(Double.NEGATIVE_INFINITY));

        assertFalse(r1.contains(-1.0));

        assertTrue(r1.contains(0.0));

        assertTrue(r1.contains(0.5));

        assertTrue(r1.contains(1.0));

        assertFalse(r1.contains(2.0));

        assertFalse(r1.contains(Double.POSITIVE_INFINITY));

    }

    

    /**

     * Tests the constrain() method for various values.

     */

    public void testConstrain() {

        Range r1 = new Range(0.0, 1.0);

        

        double d = r1.constrain(0.5);

        assertEquals(0.5, d, 0.0000001);

        

        d = r1.constrain(0.0);

        assertEquals(0.0, d, 0.0000001);



        d = r1.constrain(1.0);

        assertEquals(1.0, d, 0.0000001);

        

        d = r1.constrain(-1.0);

        assertEquals(0.0, d, 0.0000001);

        

        d = r1.constrain(2.0);

        assertEquals(1.0, d, 0.0000001);



        d = r1.constrain(Double.POSITIVE_INFINITY);

        assertEquals(1.0, d, 0.0000001);



        d = r1.constrain(Double.NEGATIVE_INFINITY);

        assertEquals(0.0, d, 0.0000001);



        d = r1.constrain(Double.NaN);

        assertTrue(Double.isNaN(d));

    }

    

    /**

     * Simple tests for the intersects() method.

     */

    public void testIntersects() {

        Range r1 = new Range(0.0, 1.0);

        assertFalse(r1.intersects(-2.0, -1.0));

        assertFalse(r1.intersects(-2.0, 0.0));

        assertTrue(r1.intersects(-2.0, 0.5));

        assertTrue(r1.intersects(-2.0, 1.0));

        assertTrue(r1.intersects(-2.0, 1.5));

        assertTrue(r1.intersects(0.0, 0.5));

        assertTrue(r1.intersects(0.0, 1.0));

        assertTrue(r1.intersects(0.0, 1.5));

        assertTrue(r1.intersects(0.5, 0.6));

        assertTrue(r1.intersects(0.5, 1.0));

        assertTrue(r1.intersects(0.5, 1.5));

        assertFalse(r1.intersects(1.0, 1.1));

        assertFalse(r1.intersects(1.5, 2.0));

    }

    

    /**

     * A simple test for the expand() method.

     */

    public void testExpand() {

        Range r1 = new Range(0.0, 100.0);

        Range r2 = Range.expand(r1, 0.10, 0.10);

        assertEquals(-10.0, r2.getLowerBound(), 0.001);

        assertEquals(110.0, r2.getUpperBound(), 0.001);

    }

    

    /**

     * Serialize an instance, restore it, and check for equality.

     */

    public void testSerialization() {



        final Range r1 = new Range(25.0, 133.42);

        Range r2 = null;



        try {

            final ByteArrayOutputStream buffer = new ByteArrayOutputStream();

            final ObjectOutput out = new ObjectOutputStream(buffer);

            out.writeObject(r1);

            out.close();



            final ObjectInput in = new ObjectInputStream(

                new ByteArrayInputStream(buffer.toByteArray())

            );

            r2 = (Range) in.readObject();

            in.close();

        }

        catch (Exception e) {

            System.out.println(e.toString());

        }

        assertEquals(r1, r2);



    }



}

