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jfreechart example source code file (DefaultIntervalXYDatasetTests.java)

This example jfreechart source code file (DefaultIntervalXYDatasetTests.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, bytearrayoutputstream, clonenotsupportedexception, defaultintervalxydataset, defaultintervalxydataset, defaultintervalxydatasettests, epsilon, epsilon, exception, illegalargumentexception, io, objectinput, s1, s1, s2

The jfreechart DefaultIntervalXYDatasetTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.]
 *
 * ----------------------------------
 * DefaultIntervalXYDatasetTests.java
 * ----------------------------------
 * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 23-Oct-2006 : Version 1 (DG);
 * 02-Nov-2006 : Added testAddSeries() method (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.DefaultIntervalXYDataset;
import org.jfree.util.PublicCloneable;

/**
 * Some tests for the {@link DefaultIntervalXYDataset} class.
 */
public class DefaultIntervalXYDatasetTests extends TestCase {

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

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

    /**
     * Some checks for the getSeriesCount() method.
     */
    public void testGetSeriesCount() {
        DefaultIntervalXYDataset d = new DefaultIntervalXYDataset();
        assertEquals(0, d.getSeriesCount());
        d = createSampleDataset1();
        assertEquals(2, d.getSeriesCount());
    }

    /**
     * Some checks for the getSeriesKey(int) method.
     */
    public void testGetSeriesKey() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals("S1", d.getSeriesKey(0));
        assertEquals("S2", d.getSeriesKey(1));

        // check for series key out of bounds
        boolean pass = false;
        try {
            /*Comparable k =*/ d.getSeriesKey(-1);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);

        pass = false;
        try {
            /*Comparable k =*/ d.getSeriesKey(2);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the getItemCount() method.
     */
    public void testGetItemCount() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(3, d.getItemCount(0));
        assertEquals(3, d.getItemCount(1));

        // try an index out of bounds
        boolean pass = false;
        try {
            d.getItemCount(2);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    private static final double EPSILON = 0.0000000001;

    /**
     * Some checks for the getXValue() method.
     */
    public void testGetXValue() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(1.0, d.getXValue(0, 0), EPSILON);
        assertEquals(2.0, d.getXValue(0, 1), EPSILON);
        assertEquals(3.0, d.getXValue(0, 2), EPSILON);
        assertEquals(11.0, d.getXValue(1, 0), EPSILON);
        assertEquals(12.0, d.getXValue(1, 1), EPSILON);
        assertEquals(13.0, d.getXValue(1, 2), EPSILON);
    }

    /**
     * Some checks for the getYValue() method.
     */
    public void testGetYValue() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(4.0, d.getYValue(0, 0), EPSILON);
        assertEquals(5.0, d.getYValue(0, 1), EPSILON);
        assertEquals(6.0, d.getYValue(0, 2), EPSILON);
        assertEquals(14.0, d.getYValue(1, 0), EPSILON);
        assertEquals(15.0, d.getYValue(1, 1), EPSILON);
        assertEquals(16.0, d.getYValue(1, 2), EPSILON);
    }

    /**
     * Some checks for the getStartXValue() method.
     */
    public void testGetStartXValue() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(0.9, d.getStartXValue(0, 0), EPSILON);
        assertEquals(1.9, d.getStartXValue(0, 1), EPSILON);
        assertEquals(2.9, d.getStartXValue(0, 2), EPSILON);
        assertEquals(10.9, d.getStartXValue(1, 0), EPSILON);
        assertEquals(11.9, d.getStartXValue(1, 1), EPSILON);
        assertEquals(12.9, d.getStartXValue(1, 2), EPSILON);
    }

    /**
     * Some checks for the getEndXValue() method.
     */
    public void testGetEndXValue() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(1.1, d.getEndXValue(0, 0), EPSILON);
        assertEquals(2.1, d.getEndXValue(0, 1), EPSILON);
        assertEquals(3.1, d.getEndXValue(0, 2), EPSILON);
        assertEquals(11.1, d.getEndXValue(1, 0), EPSILON);
        assertEquals(12.1, d.getEndXValue(1, 1), EPSILON);
        assertEquals(13.1, d.getEndXValue(1, 2), EPSILON);
    }

    /**
     * Some checks for the getStartYValue() method.
     */
    public void testGetStartYValue() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(1.09, d.getStartYValue(0, 0), EPSILON);
        assertEquals(2.09, d.getStartYValue(0, 1), EPSILON);
        assertEquals(3.09, d.getStartYValue(0, 2), EPSILON);
        assertEquals(11.09, d.getStartYValue(1, 0), EPSILON);
        assertEquals(12.09, d.getStartYValue(1, 1), EPSILON);
        assertEquals(13.09, d.getStartYValue(1, 2), EPSILON);
    }

    /**
     * Some checks for the getEndYValue() method.
     */
    public void testGetEndYValue() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(1.11, d.getEndYValue(0, 0), EPSILON);
        assertEquals(2.11, d.getEndYValue(0, 1), EPSILON);
        assertEquals(3.11, d.getEndYValue(0, 2), EPSILON);
        assertEquals(11.11, d.getEndYValue(1, 0), EPSILON);
        assertEquals(12.11, d.getEndYValue(1, 1), EPSILON);
        assertEquals(13.11, d.getEndYValue(1, 2), EPSILON);
    }

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        DefaultIntervalXYDataset d1 = new DefaultIntervalXYDataset();
        DefaultIntervalXYDataset d2 = new DefaultIntervalXYDataset();
        assertTrue(d1.equals(d2));
        assertTrue(d2.equals(d1));

        d1 = createSampleDataset1();
        assertFalse(d1.equals(d2));
        d2 = createSampleDataset1();
        assertTrue(d1.equals(d2));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        DefaultIntervalXYDataset d1 = new DefaultIntervalXYDataset();
        DefaultIntervalXYDataset d2 = null;
        try {
            d2 = (DefaultIntervalXYDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));

        // try a dataset with some content...
        d1 = createSampleDataset1();
        try {
            d2 = (DefaultIntervalXYDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));
    }

    /**
     * Another test for cloning.
     */
    public void testCloning2() {
        DefaultIntervalXYDataset d1 = new DefaultIntervalXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] x1Start = new double[] {0.9, 1.9, 2.9};
        double[] x1End = new double[] {1.1, 2.1, 3.1};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[] y1Start = new double[] {1.09, 2.09, 3.09};
        double[] y1End = new double[] {1.11, 2.11, 3.11};
        double[][] data1 = new double[][] {x1, x1Start, x1End, y1, y1Start,
                y1End};
        d1.addSeries("S1", data1);
        DefaultIntervalXYDataset d2 = null;
        try {
            d2 = (DefaultIntervalXYDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));

        // check independence
        x1[0] = 111.1;
        assertFalse(d1.equals(d2));
    }

    /**
     * Verify that this class implements {@link PublicCloneable}.
     */
    public void testPublicCloneable() {
        DefaultIntervalXYDataset d1 = new DefaultIntervalXYDataset();
        assertTrue(d1 instanceof PublicCloneable);
    }

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

        DefaultIntervalXYDataset d1 = new DefaultIntervalXYDataset();
        DefaultIntervalXYDataset 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 = (DefaultIntervalXYDataset) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(d1, d2);

        // try a dataset with some content...
        d1 = createSampleDataset1();
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);
            out.close();

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

    }

    /**
     * Some checks for the indexOf(Comparable) method.
     */
    public void testIndexOf() {
        DefaultIntervalXYDataset d = createSampleDataset1();
        assertEquals(0, d.indexOf("S1"));
        assertEquals(1, d.indexOf("S2"));
        assertEquals(-1, d.indexOf("Green Eggs and Ham"));
        assertEquals(-1, d.indexOf(null));
    }

    /**
     * Some tests for the addSeries() method.
     */
    public void testAddSeries() {
        DefaultIntervalXYDataset d = new DefaultIntervalXYDataset();
        d.addSeries("S1", new double[][] {{1.0}, {0.5}, {1.5}, {2.0}, {2.5},
                {1.5}});
        assertEquals(1, d.getSeriesCount());
        assertEquals("S1", d.getSeriesKey(0));

        // check that adding a series will overwrite the old series
        d.addSeries("S1", new double[][] {{1.1}, {0.6}, {1.6}, {2.1}, {2.6},
                {1.6}});
        assertEquals(1, d.getSeriesCount());
        assertEquals(2.1, d.getYValue(0, 0), EPSILON);

        // check null key
        boolean pass = false;
        try
        {
          d.addSeries(null, new double[][] {{1.1}, {0.6}, {1.6}, {2.1}, {2.6},
                  {1.6}});
        }
        catch (IllegalArgumentException e)
        {
          pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Creates a sample dataset for testing.
     *
     * @return A sample dataset.
     */
    public DefaultIntervalXYDataset createSampleDataset1() {
        DefaultIntervalXYDataset d = new DefaultIntervalXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] x1Start = new double[] {0.9, 1.9, 2.9};
        double[] x1End = new double[] {1.1, 2.1, 3.1};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[] y1Start = new double[] {1.09, 2.09, 3.09};
        double[] y1End = new double[] {1.11, 2.11, 3.11};
        double[][] data1 = new double[][] {x1, x1Start, x1End, y1, y1Start,
                y1End};
        d.addSeries("S1", data1);

        double[] x2 = new double[] {11.0, 12.0, 13.0};
        double[] x2Start = new double[] {10.9, 11.9, 12.9};
        double[] x2End = new double[] {11.1, 12.1, 13.1};
        double[] y2 = new double[] {14.0, 15.0, 16.0};
        double[] y2Start = new double[] {11.09, 12.09, 13.09};
        double[] y2End = new double[] {11.11, 12.11, 13.11};
        double[][] data2 = new double[][] {x2, x2Start, x2End, y2, y2Start,
                y2End};
        d.addSeries("S2", data2);
        return d;
    }

}

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