polarplottests.java

java图形利器

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2007, 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.  
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * -------------------
 * PolarPlotTests.java
 * -------------------
 * (C) Copyright 2005, 2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: PolarPlotTests.java,v 1.1.2.3 2007/03/21 10:37:20 mungady Exp $
 *
 * Changes
 * -------
 * 23-Feb-2005 : Version 1 (DG);
 * 08-Jun-2005 : Extended testEquals() (DG);
 * 07-Feb-2007 : Extended testEquals() and testCloning() (DG);
 *
 */

package org.jfree.chart.plot.junit;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Stroke;
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.chart.axis.NumberAxis;
import org.jfree.chart.plot.PolarPlot;
import org.jfree.chart.renderer.DefaultPolarItemRenderer;
import org.jfree.data.xy.DefaultXYDataset;

/**
 * Some tests for the {@link PolarPlot} class.
 */
public class PolarPlotTests extends TestCase {

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(PolarPlotTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public PolarPlotTests(String name) {
        super(name);
    }

    /**
     * Some checks for the equals() method.
     */
    public void testEquals() {
        PolarPlot plot1 = new PolarPlot();
        PolarPlot plot2 = new PolarPlot();
        assertTrue(plot1.equals(plot2));
        assertTrue(plot2.equals(plot1));
        
        plot1.setAngleGridlinePaint(new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.blue));
        assertFalse(plot1.equals(plot2));
        plot2.setAngleGridlinePaint(new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.blue));
        assertTrue(plot1.equals(plot2));
        
        Stroke s = new BasicStroke(1.23f);
        plot1.setAngleGridlineStroke(s);
        assertFalse(plot1.equals(plot2));
        plot2.setAngleGridlineStroke(s);
        assertTrue(plot1.equals(plot2));
        
        plot1.setAngleGridlinesVisible(false);
        assertFalse(plot1.equals(plot2));
        plot2.setAngleGridlinesVisible(false);
        assertTrue(plot1.equals(plot2));
        
        plot1.setAngleLabelFont(new Font("Serif", Font.PLAIN, 9));
        assertFalse(plot1.equals(plot2));
        plot2.setAngleLabelFont(new Font("Serif", Font.PLAIN, 9));
        assertTrue(plot1.equals(plot2));
        
        plot1.setAngleLabelPaint(new GradientPaint(9.0f, 8.0f, Color.blue,
                7.0f, 6.0f, Color.red));
        assertFalse(plot1.equals(plot2));
        plot2.setAngleLabelPaint(new GradientPaint(9.0f, 8.0f, Color.blue,
                7.0f, 6.0f, Color.red));
        assertTrue(plot1.equals(plot2));
        
        plot1.setAngleLabelsVisible(false);
        assertFalse(plot1.equals(plot2));
        plot2.setAngleLabelsVisible(false);
        assertTrue(plot1.equals(plot2));
        
        plot1.setAxis(new NumberAxis("Test"));
        assertFalse(plot1.equals(plot2));
        plot2.setAxis(new NumberAxis("Test"));
        assertTrue(plot1.equals(plot2));
        
        plot1.setRadiusGridlinePaint(new GradientPaint(1.0f, 2.0f, Color.white,
                3.0f, 4.0f, Color.black));
        assertFalse(plot1.equals(plot2));
        plot2.setRadiusGridlinePaint(new GradientPaint(1.0f, 2.0f, Color.white,
                3.0f, 4.0f, Color.black));
        assertTrue(plot1.equals(plot2));
        
        plot1.setRadiusGridlineStroke(s);
        assertFalse(plot1.equals(plot2));
        plot2.setRadiusGridlineStroke(s);
        assertTrue(plot1.equals(plot2));
        
        plot1.setRadiusGridlinesVisible(false);
        assertFalse(plot1.equals(plot2));
        plot2.setRadiusGridlinesVisible(false);
        assertTrue(plot1.equals(plot2));
        
        plot1.addCornerTextItem("XYZ");
        assertFalse(plot1.equals(plot2));
        plot2.addCornerTextItem("XYZ");
        assertTrue(plot1.equals(plot2));   
    }

    /**
     * Some basic checks for the clone() method.
     */
    public void testCloning() {
        PolarPlot p1 = new PolarPlot();
        PolarPlot p2 = null;
        try {
            p2 = (PolarPlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // check independence
        p1.addCornerTextItem("XYZ");
        assertFalse(p1.equals(p2));
        p2.addCornerTextItem("XYZ");
        assertTrue(p1.equals(p2));
        
        p1 = new PolarPlot(new DefaultXYDataset(), new NumberAxis("A1"), 
                new DefaultPolarItemRenderer());
        p2 = null;
        try {
            p2 = (PolarPlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
            System.err.println("Failed to clone.");
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // check independence
        p1.getAxis().setLabel("ABC");
        assertFalse(p1.equals(p2));
        p2.getAxis().setLabel("ABC");
        assertTrue(p1.equals(p2));
        
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        PolarPlot p1 = new PolarPlot();
        p1.setAngleGridlinePaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f,
                4.0f, Color.blue));
        p1.setAngleLabelPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f,
                4.0f, Color.blue));
        p1.setRadiusGridlinePaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f,
                4.0f, Color.blue));
        PolarPlot p2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(p1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            p2 = (PolarPlot) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(p1, p2);

    }

}