home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

jfreechart example source code file (StandardCategoryItemLabelGeneratorTests.java)

This example jfreechart source code file (StandardCategoryItemLabelGeneratorTests.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, c0, c1, decimalformat, decimalformat, defaultcategorydataset, io, r1, simpledateformat, standardcategoryitemlabelgenerator, standardcategoryitemlabelgenerator, standardcategoryitemlabelgeneratortests, standardcategoryitemlabelgeneratortests, standardcategorytooltipgenerator, text

The jfreechart StandardCategoryItemLabelGeneratorTests.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.]
 *
 * --------------------------------------------
 * StandardCategoryItemLabelGeneratorTests.java
 * --------------------------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 21-Mar-2003 : Version 1 (DG);
 * 13-Aug-2003 : Added cloning tests (DG);
 * 11-May-2004 : Renamed class (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.SimpleDateFormat;

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

import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link StandardCategoryItemLabelGenerator} class.
 */
public class StandardCategoryItemLabelGeneratorTests extends TestCase {

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

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

    /**
     * Some checks for the generalLabel() method.
     */
    public void testGenerateLabel() {
        StandardCategoryItemLabelGenerator g
                = new StandardCategoryItemLabelGenerator("{2}",
                new DecimalFormat("0.000"));
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(1.0, "R0", "C0");
        dataset.addValue(2.0, "R0", "C1");
        dataset.addValue(3.0, "R1", "C0");
        dataset.addValue(null, "R1", "C1");
        String s = g.generateLabel(dataset, 0, 0);
        assertTrue(s.startsWith("1"));
        assertTrue(s.endsWith("000"));

        // try a null value
        s = g.generateLabel(dataset, 1, 1);
        assertEquals("-", s);
    }

    /**
     * Some checks for the equals() method.
     */
    public void testEquals() {

        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator();
        StandardCategoryItemLabelGenerator g2
                = new StandardCategoryItemLabelGenerator();
        assertTrue(g1.equals(g2));
        assertTrue(g2.equals(g1));

        g1 = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1 = new StandardCategoryItemLabelGenerator("{1}",
                new DecimalFormat("0.000"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{1}",
                new DecimalFormat("0.000"));
        assertTrue(g1.equals(g2));

        g1 = new StandardCategoryItemLabelGenerator("{2}",
                new SimpleDateFormat("d-MMM"));
        assertFalse(g1.equals(g2));
        g2 = new StandardCategoryItemLabelGenerator("{2}",
                new SimpleDateFormat("d-MMM"));
        assertTrue(g1.equals(g2));

    }

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

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

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

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

        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator("{2}",
                DateFormat.getInstance());
        StandardCategoryItemLabelGenerator 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 = (StandardCategoryItemLabelGenerator) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(g1, g2);

    }

    /**
     * A test for bug 1481087.
     */
    public void testEquals1481087() {
        StandardCategoryItemLabelGenerator g1
                = new StandardCategoryItemLabelGenerator("{0}",
                new DecimalFormat("0.00"));
        StandardCategoryToolTipGenerator g2
                = new StandardCategoryToolTipGenerator("{0}",
                new DecimalFormat("0.00"));
        assertFalse(g1.equals(g2));
    }

}

Other jfreechart examples (source code examples)

Here is a short list of links related to this jfreechart StandardCategoryItemLabelGeneratorTests.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.