praktikum-holons/jars/jfreechart-1.0.19/tests/org/jfree/chart/annotations/XYPointerAnnotationTest.java

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2013, 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
 * Other names may be trademarks of their respective owners.]
 *
 * ----------------------------
 * XYPointerAnnotationTest.java
 * ----------------------------
 * (C) Copyright 2003-2013, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 19-Aug-2003 : Version 1 (DG);
 * 13-Oct-2003 : Expanded test for equals() method (DG);
 * 07-Jan-2005 : Added hashCode() test (DG);
 * 20-Feb-2006 : Added 'x' and 'y' checks to testEquals() (DG);
 * 23-Apr-2008 : Added testPublicCloneable() (DG);
 *
 */

package org.jfree.chart.annotations;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Stroke;

import org.jfree.chart.TestUtilities;

import org.jfree.util.PublicCloneable;
import org.junit.Test;

/**
 * Tests for the {@link XYPointerAnnotation} class.
 */
public class XYPointerAnnotationTest {

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    @Test
    public void testEquals() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1.equals(a2));

        a1 = new XYPointerAnnotation("Label2", 10.0, 20.0, Math.PI);
        assertFalse(a1.equals(a2));
        a2 = new XYPointerAnnotation("Label2", 10.0, 20.0, Math.PI);
        assertTrue(a1.equals(a2));

        a1.setX(11.0);
        assertFalse(a1.equals(a2));
        a2.setX(11.0);
        assertTrue(a1.equals(a2));

        a1.setY(22.0);
        assertFalse(a1.equals(a2));
        a2.setY(22.0);
        assertTrue(a1.equals(a2));

        //private double angle;
        a1.setAngle(Math.PI / 4.0);
        assertFalse(a1.equals(a2));
        a2.setAngle(Math.PI / 4.0);
        assertTrue(a1.equals(a2));

        //private double tipRadius;
        a1.setTipRadius(20.0);
        assertFalse(a1.equals(a2));
        a2.setTipRadius(20.0);
        assertTrue(a1.equals(a2));

        //private double baseRadius;
        a1.setBaseRadius(5.0);
        assertFalse(a1.equals(a2));
        a2.setBaseRadius(5.0);
        assertTrue(a1.equals(a2));

        //private double arrowLength;
        a1.setArrowLength(33.0);
        assertFalse(a1.equals(a2));
        a2.setArrowLength(33.0);
        assertTrue(a1.equals(a2));

        //private double arrowWidth;
        a1.setArrowWidth(9.0);
        assertFalse(a1.equals(a2));
        a2.setArrowWidth(9.0);
        assertTrue(a1.equals(a2));

        //private Stroke arrowStroke;
        Stroke stroke = new BasicStroke(1.5f);
        a1.setArrowStroke(stroke);
        assertFalse(a1.equals(a2));
        a2.setArrowStroke(stroke);
        assertTrue(a1.equals(a2));

        //private Paint arrowPaint;
        a1.setArrowPaint(Color.blue);
        assertFalse(a1.equals(a2));
        a2.setArrowPaint(Color.blue);
        assertTrue(a1.equals(a2));

        //private double labelOffset;
        a1.setLabelOffset(10.0);
        assertFalse(a1.equals(a2));
        a2.setLabelOffset(10.0);
        assertTrue(a1.equals(a2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    @Test
    public void testHashCode() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    @Test
    public void testCloning() throws CloneNotSupportedException {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = a2 = (XYPointerAnnotation) a1.clone();
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

    /**
     * Checks that this class implements PublicCloneable.
     */
    @Test
    public void testPublicCloneable() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        assertTrue(a1 instanceof PublicCloneable);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    @Test
    public void testSerialization() {
        XYPointerAnnotation a1 = new XYPointerAnnotation("Label", 10.0, 20.0,
                Math.PI);
        XYPointerAnnotation a2 = (XYPointerAnnotation) TestUtilities.serialised(a1);
        assertEquals(a1, a2);
    }

}