XYBarDatasetTests.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.]
 *
 * ----------------------
 * XYBarDatasetTests.java
 * ----------------------
 * (C) Copyright 2007, 2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 25-Jan-2007 : Version 1 (DG);
 * 22-Apr-2008 : Added testPublicCloneable (DG);
 *
 */

package org.jfree.data.xy.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.xy.DefaultXYDataset;
import org.jfree.data.xy.XYBarDataset;
import org.jfree.util.PublicCloneable;

/**
 * Some tests for the {@link XYBarDataset} class.
 */
public class XYBarDatasetTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        DefaultXYDataset d1 = new DefaultXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[][] data1 = new double[][] {x1, y1};
        d1.addSeries("S1", data1);
        DefaultXYDataset d2 = new DefaultXYDataset();
        double[] x2 = new double[] {1.0, 2.0, 3.0};
        double[] y2 = new double[] {4.0, 5.0, 6.0};
        double[][] data2 = new double[][] {x2, y2};
        d2.addSeries("S1", data2);

        XYBarDataset bd1 = new XYBarDataset(d1, 5.0);
        XYBarDataset bd2 = new XYBarDataset(d2, 5.0);
        assertTrue(bd1.equals(bd2));
        assertTrue(bd2.equals(bd1));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        DefaultXYDataset d1 = new DefaultXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[][] data1 = new double[][] {x1, y1};
        d1.addSeries("S1", data1);
        XYBarDataset bd1 = new XYBarDataset(d1, 5.0);
        XYBarDataset bd2 = null;
        try {
            bd2 = (XYBarDataset) bd1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(bd1 != bd2);
        assertTrue(bd1.getClass() == bd2.getClass());
        assertTrue(bd1.equals(bd2));

        // check independence
        d1 = (DefaultXYDataset) bd1.getUnderlyingDataset();
        d1.addSeries("S2", new double[][] {{1.0}, {2.0}});
        assertFalse(bd1.equals(bd2));
        DefaultXYDataset d2 = (DefaultXYDataset) bd2.getUnderlyingDataset();
        d2.addSeries("S2", new double[][] {{1.0}, {2.0}});
        assertTrue(bd1.equals(bd2));
    }

    /**
     * Verify that this class implements {@link PublicCloneable}.
     */
    public void testPublicCloneable() {
        DefaultXYDataset d1 = new DefaultXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[][] data1 = new double[][] {x1, y1};
        d1.addSeries("S1", data1);
        XYBarDataset bd1 = new XYBarDataset(d1, 5.0);
        assertTrue(bd1 instanceof PublicCloneable);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        DefaultXYDataset d1 = new DefaultXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[][] data1 = new double[][] {x1, y1};
        d1.addSeries("S1", data1);
        XYBarDataset bd1 = new XYBarDataset(d1, 5.0);
        XYBarDataset bd2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(bd1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            bd2 = (XYBarDataset) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(bd1, bd2);
    }

}