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jfreechart example source code file (VectorSeriesTests.java)

This example jfreechart source code file (VectorSeriesTests.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

bytearrayoutputstream, clonenotsupportedexception, epsilon, epsilon, io, objectinput, s1, s1, series, series, serieschangelistener, testcase, vectorseries, vectorseries, vectorseriestests

The jfreechart VectorSeriesTests.java source code

/* ===========================================================
 * 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.]
 *
 * ----------------------
 * VectorSeriesTests.java
 * ----------------------
 * (C) Copyright 2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 30-Jan-2007 : Version 1, based on XYSeriesTests (DG);
 * 24-May-2007 : Updated for modified method names (DG);
 * 27-Nov-2007 : Added testClear() method (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.general.SeriesChangeEvent;
import org.jfree.data.general.SeriesChangeListener;
import org.jfree.data.xy.VectorSeries;
import org.jfree.data.xy.XYCoordinate;

/**
 * Tests for the {@link VectorSeries} class.
 */
public class VectorSeriesTests extends TestCase
        implements SeriesChangeListener {

    SeriesChangeEvent lastEvent;

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

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {

        VectorSeries s1 = new VectorSeries("s1");
        VectorSeries s2 = new VectorSeries("s1");
        assertTrue(s1.equals(s2));

        // seriesKey
        s1 = new VectorSeries("s2");
        assertFalse(s1.equals(s2));
        s2 = new VectorSeries("s2");
        assertTrue(s1.equals(s2));

        // autoSort
        s1 = new VectorSeries("s2", true, true);
        assertFalse(s1.equals(s2));
        s2 = new VectorSeries("s2", true, true);
        assertTrue(s1.equals(s2));

        // allowDuplicateValues
        s1 = new VectorSeries("s2", false, false);
        assertFalse(s1.equals(s2));
        s2 = new VectorSeries("s2", false, false);
        assertTrue(s1.equals(s2));

        // add a value
        s1.add(1.0, 0.5, 1.5, 2.0);
        assertFalse(s1.equals(s2));
        s2.add(1.0, 0.5, 1.5, 2.0);
        assertTrue(s2.equals(s1));

        // add another value
        s1.add(2.0, 0.5, 1.5, 2.0);
        assertFalse(s1.equals(s2));
        s2.add(2.0, 0.5, 1.5, 2.0);
        assertTrue(s2.equals(s1));

        // remove a value
        s1.remove(new XYCoordinate(1.0, 0.5));
        assertFalse(s1.equals(s2));
        s2.remove(new XYCoordinate(1.0, 0.5));
        assertTrue(s2.equals(s1));

    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        VectorSeries s1 = new VectorSeries("s1");
        s1.add(1.0, 0.5, 1.5, 2.0);
        VectorSeries s2 = null;
        try {
            s2 = (VectorSeries) s1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(s1 != s2);
        assertTrue(s1.getClass() == s2.getClass());
        assertTrue(s1.equals(s2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        VectorSeries s1 = new VectorSeries("s1");
        s1.add(1.0, 0.5, 1.5, 2.0);
        VectorSeries s2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(s1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            s2 = (VectorSeries) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(s1, s2);

    }

    /**
     * Simple test for the indexOf() method.
     */
    public void testIndexOf() {
        VectorSeries s1 = new VectorSeries("Series 1");
        s1.add(1.0, 1.0, 1.0, 2.0);
        s1.add(2.0, 2.0, 2.0, 3.0);
        s1.add(3.0, 3.0, 3.0, 4.0);
        assertEquals(0, s1.indexOf(new XYCoordinate(1.0, 1.0)));
    }

    /**
     * A check for the indexOf() method for an unsorted series.
     */
    public void testIndexOf2() {
        VectorSeries s1 = new VectorSeries("Series 1");
        s1.add(1.0, 1.0, 1.0, 2.0);
        s1.add(3.0, 3.0, 3.0, 3.0);
        s1.add(2.0, 2.0, 2.0, 2.0);
        assertEquals(0, s1.indexOf(new XYCoordinate(1.0, 1.0)));
        assertEquals(1, s1.indexOf(new XYCoordinate(3.0, 3.0)));
        assertEquals(2, s1.indexOf(new XYCoordinate(2.0, 2.0)));
    }

    /**
     * Simple test for the remove() method.
     */
    public void testRemove() {
        VectorSeries s1 = new VectorSeries("Series 1");
        s1.add(1.0, 1.0, 1.0, 2.0);
        s1.add(3.0, 3.0, 3.0, 3.0);
        s1.add(2.0, 2.0, 2.0, 2.0);
        assertEquals(3, s1.getItemCount());

        s1.remove(new XYCoordinate(2.0, 2.0));
        assertEquals(3.0, s1.getXValue(1), EPSILON);

        s1.remove(new XYCoordinate(1.0, 1.0));
        assertEquals(3.0, s1.getXValue(0), EPSILON);
    }

    private static final double EPSILON = 0.0000000001;

    /**
     * When items are added with duplicate x-values, we expect them to remain
     * in the order they were added.
     */
    public void testAdditionOfDuplicateXValues() {
        VectorSeries s1 = new VectorSeries("Series 1");
        s1.add(1.0, 1.0, 1.0, 1.0);
        s1.add(2.0, 2.0, 2.0, 2.0);
        s1.add(2.0, 2.0, 3.0, 3.0);
        s1.add(2.0, 3.0, 4.0, 4.0);
        s1.add(3.0, 5.0, 5.0, 5.0);
        assertEquals(1.0, s1.getVectorXValue(0), EPSILON);
        assertEquals(2.0, s1.getVectorXValue(1), EPSILON);
        assertEquals(3.0, s1.getVectorXValue(2), EPSILON);
        assertEquals(4.0, s1.getVectorXValue(3), EPSILON);
        assertEquals(5.0, s1.getVectorXValue(4), EPSILON);
    }

    /**
     * Some checks for the add() method for an UNSORTED series.
     */
    public void testAdd() {
        VectorSeries series = new VectorSeries("Series", false, true);
        series.add(5.0, 5.50, 5.50, 5.50);
        series.add(5.1, 5.51, 5.51, 5.51);
        series.add(6.0, 6.6, 6.6, 6.6);
        series.add(3.0, 3.3, 3.3, 3.3);
        series.add(4.0, 4.4, 4.4, 4.4);
        series.add(2.0, 2.2, 2.2, 2.2);
        series.add(1.0, 1.1, 1.1, 1.1);
        assertEquals(5.5, series.getVectorXValue(0), EPSILON);
        assertEquals(5.51, series.getVectorXValue(1), EPSILON);
        assertEquals(6.6, series.getVectorXValue(2), EPSILON);
        assertEquals(3.3, series.getVectorXValue(3), EPSILON);
        assertEquals(4.4, series.getVectorXValue(4), EPSILON);
        assertEquals(2.2, series.getVectorXValue(5), EPSILON);
        assertEquals(1.1, series.getVectorXValue(6), EPSILON);
    }

    /**
     * A simple check that the maximumItemCount attribute is working.
     */
    public void testSetMaximumItemCount() {
        VectorSeries s1 = new VectorSeries("S1");
        assertEquals(Integer.MAX_VALUE, s1.getMaximumItemCount());
        s1.setMaximumItemCount(2);
        assertEquals(2, s1.getMaximumItemCount());
        s1.add(1.0, 1.1, 1.1, 1.1);
        s1.add(2.0, 2.2, 2.2, 2.2);
        s1.add(3.0, 3.3, 3.3, 3.3);
        assertEquals(2.0, s1.getXValue(0), EPSILON);
        assertEquals(3.0, s1.getXValue(1), EPSILON);
    }

    /**
     * Check that the maximum item count can be applied retrospectively.
     */
    public void testSetMaximumItemCount2() {
        VectorSeries s1 = new VectorSeries("S1");
        s1.add(1.0, 1.1, 1.1, 1.1);
        s1.add(2.0, 2.2, 2.2, 2.2);
        s1.add(3.0, 3.3, 3.3, 3.3);
        s1.setMaximumItemCount(2);
        assertEquals(2.0, s1.getXValue(0), EPSILON);
        assertEquals(3.0, s1.getXValue(1), EPSILON);
    }

    /**
     * Some checks for the clear() method.
     */
    public void testClear() {
        VectorSeries s1 = new VectorSeries("S1");
        s1.addChangeListener(this);
        s1.clear();
        assertNull(this.lastEvent);
        assertTrue(s1.isEmpty());
        s1.add(1.0, 2.0, 3.0, 4.0);
        assertFalse(s1.isEmpty());
        s1.clear();
        assertNotNull(this.lastEvent);
        assertTrue(s1.isEmpty());
    }

}

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