jfreechart example source code file (DefaultHeatMapDatasetTests.java)

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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());
    }

}