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jfreechart example source code file (ComparableObjectSeriesTests.java)

This example jfreechart source code file (ComparableObjectSeriesTests.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

a, a, abc, b, b, c, comparableobjectseries, comparableobjectseriestests, def, integer, integer, io, mycomparableobjectseries, mycomparableobjectseries, test

The jfreechart ComparableObjectSeriesTests.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.]
 *
 * --------------------------------
 * ComparableObjectSeriesTests.java
 * --------------------------------
 * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 20-Oct-2006 : Version 1 (DG);
 * 31-Oct-2007 : New hashCode() test (DG);
 *
 */

package org.jfree.data.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.ComparableObjectItem;
import org.jfree.data.ComparableObjectSeries;

/**
 * Tests for the {@link ComparableObjectSeries} class.
 */
public class ComparableObjectSeriesTests extends TestCase {

    static class MyComparableObjectSeries extends ComparableObjectSeries {
        /**
         * Creates a new instance.
         *
         * @param key  the series key.
         */
        public MyComparableObjectSeries(Comparable key) {
            super(key);
        }
        /**
         * Creates a new instance.
         *
         * @param key  the series key.
         * @param autoSort  automatically sort by x-value?
         * @param allowDuplicateXValues  allow duplicate values?
         */
        public MyComparableObjectSeries(Comparable key, boolean autoSort,
                boolean allowDuplicateXValues) {
            super(key, autoSort, allowDuplicateXValues);
        }
        public void add(Comparable x, Object y) {
            super.add(x, y);
        }

        public ComparableObjectItem remove(Comparable x) {
            return super.remove(x);
        }
    }

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

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

    /**
     * Some checks for the constructor.
     */
    public void testConstructor1() {
        ComparableObjectSeries s1 = new ComparableObjectSeries("s1");
        assertEquals("s1", s1.getKey());
        assertNull(s1.getDescription());
        assertTrue(s1.getAllowDuplicateXValues());
        assertTrue(s1.getAutoSort());
        assertEquals(0, s1.getItemCount());
        assertEquals(Integer.MAX_VALUE, s1.getMaximumItemCount());

        // try null key
        boolean pass = false;
        try {
            /*s1 = */new ComparableObjectSeries(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }

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

        // key
        s1 = new MyComparableObjectSeries("B");
        assertFalse(s1.equals(s2));
        s2 = new MyComparableObjectSeries("B");
        assertTrue(s1.equals(s2));

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

        // allowDuplicateXValues
        s1 = new MyComparableObjectSeries("B", false, false);
        assertFalse(s1.equals(s2));
        s2 = new MyComparableObjectSeries("B", false, false);
        assertTrue(s1.equals(s2));

        // add a value
        s1.add(new Integer(1), "ABC");
        assertFalse(s1.equals(s2));
        s2.add(new Integer(1), "ABC");
        assertTrue(s1.equals(s2));

        // add another value
        s1.add(new Integer(0), "DEF");
        assertFalse(s1.equals(s2));
        s2.add(new Integer(0), "DEF");
        assertTrue(s1.equals(s2));

        // remove an item
        s1.remove(new Integer(1));
        assertFalse(s1.equals(s2));
        s2.remove(new Integer(1));
        assertTrue(s1.equals(s2));
    }

    /**
     * Some checks for the clone() method.
     */
    public void testCloning() {
        MyComparableObjectSeries s1 = new MyComparableObjectSeries("A");
        s1.add(new Integer(1), "ABC");
        MyComparableObjectSeries s2 = null;
        try {
            s2 = (MyComparableObjectSeries) 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() {
        MyComparableObjectSeries s1 = new MyComparableObjectSeries("A");
        s1.add(new Integer(1), "ABC");
        MyComparableObjectSeries 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 = (MyComparableObjectSeries) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(s1, s2);
    }

    /**
     * Some simple checks for the hashCode() method.
     */
    public void testHashCode() {
        MyComparableObjectSeries s1 = new MyComparableObjectSeries("Test");
        MyComparableObjectSeries s2 = new MyComparableObjectSeries("Test");
        assertEquals(s1, s2);
        assertEquals(s1.hashCode(), s2.hashCode());

        s1.add("A", "1");
        s2.add("A", "1");
        assertEquals(s1, s2);
        assertEquals(s1.hashCode(), s2.hashCode());

        s1.add("B", null);
        s2.add("B", null);
        assertEquals(s1, s2);
        assertEquals(s1.hashCode(), s2.hashCode());

        s1.add("C", "3");
        s2.add("C", "3");
        assertEquals(s1, s2);
        assertEquals(s1.hashCode(), s2.hashCode());

        s1.add("D", "4");
        s2.add("D", "4");
        assertEquals(s1, s2);
        assertEquals(s1.hashCode(), s2.hashCode());
    }

}

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