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jfreechart example source code file (DefaultWindDatasetTests.java)

This example jfreechart source code file (DefaultWindDatasetTests.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, day, defaultwinddataset, defaultwinddataset, exception, illegalargumentexception, io, object, object, objectinput, series, series

The jfreechart DefaultWindDatasetTests.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.]
 *
 * ----------------------------
 * DefaultWindDatasetTests.java
 * ----------------------------
 * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 12-Jul-2006 : 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.time.Day;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.xy.DefaultWindDataset;
import org.jfree.util.PublicCloneable;

/**
 * Tests for {@link DefaultWindDataset}.
 */
public class DefaultWindDatasetTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        DefaultWindDataset d1 = new DefaultWindDataset();
        DefaultWindDataset d2 = new DefaultWindDataset();
        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() {
        DefaultWindDataset d1 = new DefaultWindDataset();
        DefaultWindDataset d2 = null;
        try {
            d2 = (DefaultWindDataset) 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();
        d2 = null;
        try {
            d2 = (DefaultWindDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));
    }

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

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        DefaultWindDataset d1 = new DefaultWindDataset();
        DefaultWindDataset 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 = (DefaultWindDataset) 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 = (DefaultWindDataset) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(d1, d2);

    }

    /**
     * Some checks for the getSeriesKey(int) method.
     */
    public void testGetSeriesKey() {
        DefaultWindDataset d = createSampleDataset1();
        assertEquals("Series 1", d.getSeriesKey(0));
        assertEquals("Series 2", 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 indexOf(Comparable) method.
     */
    public void testIndexOf() {
        DefaultWindDataset d = createSampleDataset1();
        assertEquals(0, d.indexOf("Series 1"));
        assertEquals(1, d.indexOf("Series 2"));
        assertEquals(-1, d.indexOf("Green Eggs and Ham"));
        assertEquals(-1, d.indexOf(null));
    }

    /**
     * Creates a sample dataset for testing.
     *
     * @return A sample dataset.
     */
    public DefaultWindDataset createSampleDataset1() {
        Day t = new Day(1, 4, 2006);
        Object[] item1 = createItem(t, 3, 7);
        Object[] item2 = createItem(t.next(), 4, 8);
        Object[] item3 = createItem(t.next(), 5, 9);
        Object[][] series1 = new Object[][] {item1, item2, item3};
        Object[] item1b = createItem(t, 6, 10);
        Object[] item2b = createItem(t.next(), 7, 11);
        Object[] item3b = createItem(t.next(), 8, 12);
        Object[][] series2 = new Object[][] {item1b, item2b, item3b};
        Object[][][] data = new Object[][][] {series1, series2};
        return new DefaultWindDataset(data);
    }

    /**
     * Creates an array representing one item in a series.
     *
     * @param t  the time period.
     * @param dir  the wind direction.
     * @param force  the wind force.
     *
     * @return An array containing the specified items.
     */
    private Object[] createItem(RegularTimePeriod t, int dir, int force) {
        return new Object[] {new Long(t.getMiddleMillisecond()),
                new Integer(dir), new Integer(force)};
    }
}

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