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jfreechart example source code file (OHLCSeriesTests.java)

This example jfreechart source code file (OHLCSeriesTests.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, io, objectinput, ohlcseries, ohlcseries, ohlcseriestests, ohlcseriestests, serieschangelistener, seriesexception, test, testcase, year, year

The jfreechart OHLCSeriesTests.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.]
 *
 * --------------------
 * OHLCSeriesTests.java
 * --------------------
 * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 04-Dec-2006 : Version 1, based on XYSeriesTests (DG);
 * 27-Nov-2007 : Added testClear() method (DG);
 *
 */

package org.jfree.data.time.ohlc.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.general.SeriesException;
import org.jfree.data.time.Year;
import org.jfree.data.time.ohlc.OHLCSeries;

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

    SeriesChangeEvent lastEvent;

    /**
     * Records a change 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(OHLCSeriesTests.class);
    }

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        OHLCSeries s1 = new OHLCSeries("s1");
        OHLCSeries s2 = new OHLCSeries("s1");
        assertTrue(s1.equals(s2));

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

        // add a value
        s1.add(new Year(2006), 2.0, 4.0, 1.0, 3.0);
        assertFalse(s1.equals(s2));
        s2.add(new Year(2006), 2.0, 4.0, 1.0, 3.0);
        assertTrue(s2.equals(s1));

        // add another value
        s1.add(new Year(2008), 2.0, 4.0, 1.0, 3.0);
        assertFalse(s1.equals(s2));
        s2.add(new Year(2008), 2.0, 4.0, 1.0, 3.0);
        assertTrue(s2.equals(s1));

        // remove a value
        s1.remove(new Year(2008));
        assertFalse(s1.equals(s2));
        s2.remove(new Year(2008));
        assertTrue(s2.equals(s1));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        OHLCSeries s1 = new OHLCSeries("s1");
        s1.add(new Year(2006), 2.0, 4.0, 1.0, 3.0);
        OHLCSeries s2 = null;
        try {
            s2 = (OHLCSeries) 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() {

        OHLCSeries s1 = new OHLCSeries("s1");
        s1.add(new Year(2006), 2.0, 4.0, 1.0, 3.0);
        OHLCSeries 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 = (OHLCSeries) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(s1, s2);

    }

    /**
     * Simple test for the indexOf() method.
     */
    public void testIndexOf() {
        OHLCSeries s1 = new OHLCSeries("s1");
        s1.add(new Year(2006), 2.0, 4.0, 1.0, 3.0);
        s1.add(new Year(2011), 2.0, 4.0, 1.0, 3.0);
        s1.add(new Year(2010), 2.0, 4.0, 1.0, 3.0);
        assertEquals(0, s1.indexOf(new Year(2006)));
        assertEquals(1, s1.indexOf(new Year(2010)));
        assertEquals(2, s1.indexOf(new Year(2011)));
    }

    /**
     * Simple test for the remove() method.
     */
    public void testRemove() {
        OHLCSeries s1 = new OHLCSeries("s1");
        s1.add(new Year(2006), 2.0, 4.0, 1.0, 3.0);
        s1.add(new Year(2011), 2.1, 4.1, 1.1, 3.1);
        s1.add(new Year(2010), 2.2, 4.2, 1.2, 3.2);
        assertEquals(3, s1.getItemCount());

        s1.remove(new Year(2010));
        assertEquals(new Year(2011), s1.getPeriod(1));

        s1.remove(new Year(2006));
        assertEquals(new Year(2011), s1.getPeriod(0));
    }

    /**
     * If you add a duplicate period, an exception should be thrown.
     */
    public void testAdditionOfDuplicatePeriod() {
        OHLCSeries s1 = new OHLCSeries("s1");
        s1.add(new Year(2006), 1.0, 1.0, 1.0, 1.0);
        boolean pass = false;
        try {
            s1.add(new Year(2006), 1.0, 1.0, 1.0, 1.0);
        }
        catch (SeriesException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * A simple check that the maximumItemCount attribute is working.
     */
    public void testSetMaximumItemCount() {
        OHLCSeries s1 = new OHLCSeries("s1");
        assertEquals(Integer.MAX_VALUE, s1.getMaximumItemCount());
        s1.setMaximumItemCount(2);
        assertEquals(2, s1.getMaximumItemCount());
        s1.add(new Year(2006), 1.0, 1.1, 1.1, 1.1);
        s1.add(new Year(2007), 2.0, 2.2, 2.2, 2.2);
        s1.add(new Year(2008), 3.0, 3.3, 3.3, 3.3);
        assertEquals(new Year(2007), s1.getPeriod(0));
        assertEquals(new Year(2008), s1.getPeriod(1));
    }

    /**
     * Check that the maximum item count can be applied retrospectively.
     */
    public void testSetMaximumItemCount2() {
        OHLCSeries s1 = new OHLCSeries("s1");
        s1.add(new Year(2006), 1.0, 1.1, 1.1, 1.1);
        s1.add(new Year(2007), 2.0, 2.2, 2.2, 2.2);
        s1.add(new Year(2008), 3.0, 3.3, 3.3, 3.3);
        s1.setMaximumItemCount(2);
        assertEquals(new Year(2007), s1.getPeriod(0));
        assertEquals(new Year(2008), s1.getPeriod(1));
    }

    /**
     * Some checks for the clear() method.
     */
    public void testClear() {
        OHLCSeries s1 = new OHLCSeries("S1");
        s1.addChangeListener(this);
        s1.clear();
        assertNull(this.lastEvent);
        assertTrue(s1.isEmpty());
        s1.add(new Year(2006), 1.0, 1.1, 1.1, 1.1);
        assertFalse(s1.isEmpty());
        s1.clear();
        assertNotNull(this.lastEvent);
        assertTrue(s1.isEmpty());
    }

}

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