RingPlotTests.java

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2011, 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.]
 *
 * ------------------
 * RingPlotTests.java
 * ------------------
 * (C) Copyright 2004-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 09-Nov-2004 : Version 1 (DG);
 * 12-Oct-2006 : Updated testEquals() (DG);
 *
 */

package org.jfree.chart.plot.junit;

import java.awt.BasicStroke;
import java.awt.Color;
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.plot.RingPlot;

/**
 * Tests for the {@link RingPlot} class.
 */
public class RingPlotTests extends TestCase {

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

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

    /**
     * Some checks for the equals() method.
     */
    public void testEquals() {

        RingPlot plot1 = new RingPlot(null);
        RingPlot plot2 = new RingPlot(null);
        assertTrue(plot1.equals(plot2));
        assertTrue(plot2.equals(plot1));

        // separatorsVisible
        plot1.setSeparatorsVisible(false);
        assertFalse(plot1.equals(plot2));
        plot2.setSeparatorsVisible(false);
        assertTrue(plot1.equals(plot2));

        // separatorStroke
        Stroke s = new BasicStroke(1.1f);
        plot1.setSeparatorStroke(s);
        assertFalse(plot1.equals(plot2));
        plot2.setSeparatorStroke(s);
        assertTrue(plot1.equals(plot2));

        // separatorPaint
        plot1.setSeparatorPaint(new GradientPaint(1.0f, 2.0f, Color.red,
                2.0f, 1.0f, Color.blue));
        assertFalse(plot1.equals(plot2));
        plot2.setSeparatorPaint(new GradientPaint(1.0f, 2.0f, Color.red,
                2.0f, 1.0f, Color.blue));
        assertTrue(plot1.equals(plot2));

        // innerSeparatorExtension
        plot1.setInnerSeparatorExtension(0.01);
        assertFalse(plot1.equals(plot2));
        plot2.setInnerSeparatorExtension(0.01);
        assertTrue(plot1.equals(plot2));

        // outerSeparatorExtension
        plot1.setOuterSeparatorExtension(0.02);
        assertFalse(plot1.equals(plot2));
        plot2.setOuterSeparatorExtension(0.02);
        assertTrue(plot1.equals(plot2));

        // sectionDepth
        plot1.setSectionDepth(0.12);
        assertFalse(plot1.equals(plot2));
        plot2.setSectionDepth(0.12);
        assertTrue(plot1.equals(plot2));

    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        RingPlot p1 = new RingPlot(null);
        GradientPaint gp = new GradientPaint(1.0f, 2.0f, Color.yellow,
                3.0f, 4.0f, Color.red);
        p1.setSeparatorPaint(gp);
        RingPlot p2 = null;
        try {
            p2 = (RingPlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
    }

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

        RingPlot p1 = new RingPlot(null);
        GradientPaint gp = new GradientPaint(1.0f, 2.0f, Color.yellow,
                3.0f, 4.0f, Color.red);
        p1.setSeparatorPaint(gp);
        RingPlot 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 = (RingPlot) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(p1, p2);
    }

}