jfreechart example source code file (StandardXYItemLabelGeneratorTests.java)

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Java - jfreechart tags/keywords

bytearrayoutputstream, clonenotsupportedexception, dateformat, dateformat, decimalformat, decimalformat, io, numberformat, objectinput, simpledateformat, simpledateformat, standardxyitemlabelgenerator, standardxyitemlabelgenerator, standardxyitemlabelgeneratortests, string, text

The jfreechart StandardXYItemLabelGeneratorTests.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.]
 *
 * --------------------------------------
 * StandardXYItemLabelGeneratorTests.java
 * --------------------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 23-Mar-2003 : Version 1 (DG);
 * 26-Feb-2004 : Updates for new code (DG);
 * 20-Jan-2006 : Renamed StandardXYItemLabelGeneratorTests.java (DG);
 * 25-Jan-2007 : Added independence checks to testCloning() (DG);
 * 23-Apr-2008 : Added testPublicCloneable() (DG);
 *
 */

package org.jfree.chart.labels.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 java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.labels.StandardXYItemLabelGenerator;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link StandardXYItemLabelGenerator} class.
 */
public class StandardXYItemLabelGeneratorTests extends TestCase {

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

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

    /**
     * A series of tests for the equals() method.
     */
    public void testEquals() {

        // some setup...
        String f1 = "{1}";
        String f2 = "{2}";
        NumberFormat xnf1 = new DecimalFormat("0.00");
        NumberFormat xnf2 = new DecimalFormat("0.000");
        NumberFormat ynf1 = new DecimalFormat("0.00");
        NumberFormat ynf2 = new DecimalFormat("0.000");

        StandardXYItemLabelGenerator g1 = null;
        StandardXYItemLabelGenerator g2 = null;

        g1 = new StandardXYItemLabelGenerator(f1, xnf1, ynf1);
        g2 = new StandardXYItemLabelGenerator(f1, xnf1, ynf1);
        assertTrue(g1.equals(g2));
        assertTrue(g2.equals(g1));

        g1 = new StandardXYItemLabelGenerator(f2, xnf1, ynf1);
        assertFalse(g1.equals(g2));
        g2 = new StandardXYItemLabelGenerator(f2, xnf1, ynf1);
        assertTrue(g1.equals(g2));

        g1 = new StandardXYItemLabelGenerator(f2, xnf2, ynf1);
        assertFalse(g1.equals(g2));
        g2 = new StandardXYItemLabelGenerator(f2, xnf2, ynf1);
        assertTrue(g1.equals(g2));

        g1 = new StandardXYItemLabelGenerator(f2, xnf2, ynf2);
        assertFalse(g1.equals(g2));
        g2 = new StandardXYItemLabelGenerator(f2, xnf2, ynf2);
        assertTrue(g1.equals(g2));

        DateFormat xdf1 = new SimpleDateFormat("d-MMM");
        DateFormat xdf2 = new SimpleDateFormat("d-MMM-yyyy");
        DateFormat ydf1 = new SimpleDateFormat("d-MMM");
        DateFormat ydf2 = new SimpleDateFormat("d-MMM-yyyy");

        g1 = new StandardXYItemLabelGenerator(f1, xdf1, ydf1);
        g2 = new StandardXYItemLabelGenerator(f1, xdf1, ydf1);
        assertTrue(g1.equals(g2));
        assertTrue(g2.equals(g1));

        g1 = new StandardXYItemLabelGenerator(f1, xdf2, ydf1);
        assertFalse(g1.equals(g2));
        g2 = new StandardXYItemLabelGenerator(f1, xdf2, ydf1);
        assertTrue(g1.equals(g2));

        g1 = new StandardXYItemLabelGenerator(f1, xdf2, ydf2);
        assertFalse(g1.equals(g2));
        g2 = new StandardXYItemLabelGenerator(f1, xdf2, ydf2);
        assertTrue(g1.equals(g2));

    }

    /**
     * Simple check that hashCode is implemented.
     */
    public void testHashCode() {
        StandardXYItemLabelGenerator g1
                = new StandardXYItemLabelGenerator();
        StandardXYItemLabelGenerator g2
                = new StandardXYItemLabelGenerator();
        assertTrue(g1.equals(g2));
        assertTrue(g1.hashCode() == g2.hashCode());
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        StandardXYItemLabelGenerator g1 = new StandardXYItemLabelGenerator();
        StandardXYItemLabelGenerator g2 = null;
        try {
            g2 = (StandardXYItemLabelGenerator) g1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(g1 != g2);
        assertTrue(g1.getClass() == g2.getClass());
        assertTrue(g1.equals(g2));

        // check independence
        g1.getXFormat().setMinimumIntegerDigits(2);
        assertFalse(g1.equals(g2));
        g2.getXFormat().setMinimumIntegerDigits(2);
        assertTrue(g1.equals(g2));

        g1.getYFormat().setMinimumIntegerDigits(2);
        assertFalse(g1.equals(g2));
        g2.getYFormat().setMinimumIntegerDigits(2);
        assertTrue(g1.equals(g2));

        // another test...
        g1 = new StandardXYItemLabelGenerator("{0} {1} {2}",
                DateFormat.getInstance(), DateFormat.getInstance());
        try {
            g2 = (StandardXYItemLabelGenerator) g1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(g1 != g2);
        assertTrue(g1.getClass() == g2.getClass());
        assertTrue(g1.equals(g2));

        // check independence
        g1.getXDateFormat().setNumberFormat(new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2.getXDateFormat().setNumberFormat(new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1.getYDateFormat().setNumberFormat(new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2.getYDateFormat().setNumberFormat(new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

    }

    /**
     * Check to ensure that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        StandardXYItemLabelGenerator g1 = new StandardXYItemLabelGenerator();
        assertTrue(g1 instanceof PublicCloneable);
    }

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

        StandardXYItemLabelGenerator g1 = new StandardXYItemLabelGenerator();
        StandardXYItemLabelGenerator g2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(g1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            g2 = (StandardXYItemLabelGenerator) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(g1, g2);

    }

}