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jfreechart example source code file (DefaultHeatMapDatasetTests.java)

This example jfreechart source code file (DefaultHeatMapDatasetTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

bytearrayinputstream, bytearrayoutputstream, bytearrayoutputstream, clonenotsupportedexception, datasetchangeevent, defaultheatmapdataset, defaultheatmapdataset, defaultheatmapdatasettests, defaultheatmapdatasettests, epsilon, epsilon, io, objectinput, test, testcase

The jfreechart DefaultHeatMapDatasetTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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.]
 *
 * -------------------------------
 * DefaultHeatMapDatasetTests.java
 * -------------------------------
 * (C) Copyright 2009, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 28-Jan-2009 : Version 1 (DG);
 *
 */

package org.jfree.data.general.junit;

import org.jfree.data.general.DefaultHeatMapDataset;
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.general.DatasetChangeEvent;
import org.jfree.data.general.DatasetChangeListener;

/**
 * Somes tests for the {@link DefaultHeatMapDataset} class.
 *
 * @since 1.0.13
 */
public class DefaultHeatMapDatasetTests extends TestCase
        implements DatasetChangeListener {

    /** The last event received. */
    private DatasetChangeEvent lastEvent;

    /**
     * Records the last event.
     *
     * @param event  the last event.
     */
    public void datasetChanged(DatasetChangeEvent event) {
        this.lastEvent = event;
    }

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

    private static final double EPSILON = 0.0000000001;

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

    /**
     * Some general tests.
     */
    public void testGeneral() {
        DefaultHeatMapDataset d = new DefaultHeatMapDataset(10, 5, 0.0, 9.0,
                0.0, 5.0);
        assertEquals(10, d.getXSampleCount());
        assertEquals(5, d.getYSampleCount());
        assertEquals(0.0, d.getMinimumXValue(), EPSILON);
        assertEquals(9.0, d.getMaximumXValue(), EPSILON);
        assertEquals(0.0, d.getMinimumYValue(), EPSILON);
        assertEquals(5.0, d.getMaximumYValue(), EPSILON);
        assertEquals(0.0, d.getZValue(0, 0), EPSILON);
        d.addChangeListener(this);
        d.setZValue(0, 0, 1.0, false);
        assertEquals(1.0, d.getZValue(0, 0), EPSILON);
        assertNull(this.lastEvent);
        d.setZValue(1, 2, 2.0);
        assertEquals(2.0, d.getZValue(1, 2), EPSILON);
        assertNotNull(this.lastEvent);
    }

    /**
     * Some tests for the equals() method.
     */
    public void testEquals() {
        DefaultHeatMapDataset d1 = new DefaultHeatMapDataset(5, 10, 1.0, 2.0,
                3.0, 4.0);
        DefaultHeatMapDataset d2 = new DefaultHeatMapDataset(5, 10, 1.0, 2.0,
                3.0, 4.0);
        assertEquals(d1, d2);

        d1 = new DefaultHeatMapDataset(6, 10, 1.0, 2.0, 3.0, 4.0);
        assertFalse(d1.equals(d2));
        d2 = new DefaultHeatMapDataset(6, 10, 1.0, 2.0, 3.0, 4.0);
        assertTrue(d1.equals(d2));

        d1 = new DefaultHeatMapDataset(6, 11, 1.0, 2.0, 3.0, 4.0);
        assertFalse(d1.equals(d2));
        d2 = new DefaultHeatMapDataset(6, 11, 1.0, 2.0, 3.0, 4.0);
        assertTrue(d1.equals(d2));

        d1 = new DefaultHeatMapDataset(6, 11, 2.0, 2.0, 3.0, 4.0);
        assertFalse(d1.equals(d2));
        d2 = new DefaultHeatMapDataset(6, 11, 2.0, 2.0, 3.0, 4.0);
        assertTrue(d1.equals(d2));

        d1 = new DefaultHeatMapDataset(6, 11, 2.0, 3.0, 3.0, 4.0);
        assertFalse(d1.equals(d2));
        d2 = new DefaultHeatMapDataset(6, 11, 2.0, 3.0, 3.0, 4.0);
        assertTrue(d1.equals(d2));

        d1 = new DefaultHeatMapDataset(6, 11, 2.0, 3.0, 4.0, 4.0);
        assertFalse(d1.equals(d2));
        d2 = new DefaultHeatMapDataset(6, 11, 2.0, 3.0, 4.0, 4.0);
        assertTrue(d1.equals(d2));

        d1 = new DefaultHeatMapDataset(6, 11, 2.0, 3.0, 4.0, 5.0);
        assertFalse(d1.equals(d2));
        d2 = new DefaultHeatMapDataset(6, 11, 2.0, 3.0, 4.0, 5.0);
        assertTrue(d1.equals(d2));

        d1.setZValue(1, 2, 3.0);
        assertFalse(d1.equals(d2));
        d2.setZValue(1, 2, 3.0);
        assertTrue(d1.equals(d2));

        d1.setZValue(0, 0, Double.NEGATIVE_INFINITY);
        assertFalse(d1.equals(d2));
        d2.setZValue(0, 0, Double.NEGATIVE_INFINITY);
        assertTrue(d1.equals(d2));

        d1.setZValue(0, 1, Double.POSITIVE_INFINITY);
        assertFalse(d1.equals(d2));
        d2.setZValue(0, 1, Double.POSITIVE_INFINITY);
        assertTrue(d1.equals(d2));

        d1.setZValue(0, 2, Double.NaN);
        assertFalse(d1.equals(d2));
        d2.setZValue(0, 2, Double.NaN);
        assertTrue(d1.equals(d2));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        DefaultHeatMapDataset d1 = new DefaultHeatMapDataset(2, 3, -1.0, 4.0,
                -2.0, 5.0);
        d1.setZValue(0, 0, 10.0);
        d1.setZValue(0, 1, Double.NEGATIVE_INFINITY);
        d1.setZValue(0, 2, Double.POSITIVE_INFINITY);
        d1.setZValue(1, 0, Double.NaN);
        DefaultHeatMapDataset d2 = null;
        try {
            d2 = (DefaultHeatMapDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));

        // simple check for independence
        d1.setZValue(0, 0, 11.0);
        assertFalse(d1.equals(d2));
        d2.setZValue(0, 0, 11.0);
        assertTrue(d1.equals(d2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        DefaultHeatMapDataset d1 = new DefaultHeatMapDataset(2, 3, -1.0, 4.0,
                -2.0, 5.0);
        d1.setZValue(0, 0, 10.0);
        d1.setZValue(0, 1, Double.NEGATIVE_INFINITY);
        d1.setZValue(0, 2, Double.POSITIVE_INFINITY);
        d1.setZValue(1, 0, Double.NaN);

        DefaultHeatMapDataset d2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            d2 = (DefaultHeatMapDataset) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(d1, d2);
    }

    /**
     * Runs the test suite using JUnit's text-based runner.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

}

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