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jfreechart example source code file (DataUtilitiesTests.java)

This example jfreechart source code file (DataUtilitiesTests.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

c0, c1, c1, datautilitiestests, defaultkeyedvalues2d, defaultkeyedvalues2d, epsilon, epsilon, number, r0, r1, r1, test, testcase

The jfreechart DataUtilitiesTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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.]
 *
 * -----------------------
 * DataUtilitiesTests.java
 * -----------------------
 * (C) Copyright 2005-2009, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 03-Mar-2005 : Version 1 (DG);
 * 28-Jan-2009 : Added tests for equal(double[][], double[][]) method (DG);
 * 28-Jan-2009 : Added tests for clone(double[][]) (DG);
 * 04-Feb-2009 : Added tests for new calculateColumnTotal/RowTotal methods (DG);
 *
 */

package org.jfree.data.junit;

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

import junit.framework.TestSuite;
import org.jfree.data.DataUtilities;
import org.jfree.data.DefaultKeyedValues2D;

/**
 * Some tests for the {@link DataUtilities} class.
 */
public class DataUtilitiesTests extends TestCase {

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

    /**
     * Tests the createNumberArray2D() method.
     */
    public void testCreateNumberArray2D() {
        double[][] d = new double[2][];
        d[0] = new double[] {1.1, 2.2, 3.3, 4.4};
        d[1] = new double[] {1.1, 2.2, 3.3, 4.4, 5.5};
        Number[][] n = DataUtilities.createNumberArray2D(d);
        assertEquals(2, n.length);
        assertEquals(4, n[0].length);
        assertEquals(5, n[1].length);
    }

    private static final double EPSILON = 0.000000001;

    /**
     * Some checks for the calculateColumnTotal() method.
     */
    public void testCalculateColumnTotal() {
        DefaultKeyedValues2D table = new DefaultKeyedValues2D();
        table.addValue(new Double(1.0), "R0", "C0");
        table.addValue(new Double(2.0), "R0", "C1");
        table.addValue(new Double(3.0), "R1", "C0");
        table.addValue(new Double(4.0), "R1", "C1");
        assertEquals(4.0, DataUtilities.calculateColumnTotal(table, 0), EPSILON);
        assertEquals(6.0, DataUtilities.calculateColumnTotal(table, 1), EPSILON);
        table.setValue(null, "R1", "C1");
        assertEquals(2.0, DataUtilities.calculateColumnTotal(table, 1), EPSILON);
    }

    /**
     * Some checks for the calculateColumnTotal() method.
     */
    public void testCalculateColumnTotal2() {
        DefaultKeyedValues2D table = new DefaultKeyedValues2D();
        table.addValue(new Double(1.0), "R0", "C0");
        table.addValue(new Double(2.0), "R0", "C1");
        table.addValue(new Double(3.0), "R1", "C0");
        table.addValue(new Double(4.0), "R1", "C1");
        assertEquals(4.0, DataUtilities.calculateColumnTotal(table, 0,
                new int[] {0, 1}), EPSILON);
        assertEquals(1.0, DataUtilities.calculateColumnTotal(table, 0,
                new int[] {0}), EPSILON);
        assertEquals(3.0, DataUtilities.calculateColumnTotal(table, 0,
                new int[] {1}), EPSILON);
        assertEquals(0.0, DataUtilities.calculateColumnTotal(table, 0,
                new int[] {}), EPSILON);

        assertEquals(6.0, DataUtilities.calculateColumnTotal(table, 1,
                new int[] {0, 1}), EPSILON);
        assertEquals(2.0, DataUtilities.calculateColumnTotal(table, 1,
                new int[] {0}), EPSILON);
        assertEquals(4.0, DataUtilities.calculateColumnTotal(table, 1,
                new int[] {1}), EPSILON);

        table.setValue(null, "R1", "C1");
        assertEquals(2.0, DataUtilities.calculateColumnTotal(table, 1,
                new int[] {0, 1}), EPSILON);
        assertEquals(0.0, DataUtilities.calculateColumnTotal(table, 1,
                new int[] {1}), EPSILON);
    }

    /**
     * Some checks for the calculateRowTotal() method.
     */
    public void testCalculateRowTotal() {
        DefaultKeyedValues2D table = new DefaultKeyedValues2D();
        table.addValue(new Double(1.0), "R0", "C0");
        table.addValue(new Double(2.0), "R0", "C1");
        table.addValue(new Double(3.0), "R1", "C0");
        table.addValue(new Double(4.0), "R1", "C1");
        assertEquals(3.0, DataUtilities.calculateRowTotal(table, 0), EPSILON);
        assertEquals(7.0, DataUtilities.calculateRowTotal(table, 1), EPSILON);
        table.setValue(null, "R1", "C1");
        assertEquals(3.0, DataUtilities.calculateRowTotal(table, 1), EPSILON);
    }

    /**
     * Some checks for the calculateRowTotal() method.
     */
    public void testCalculateRowTotal2() {
        DefaultKeyedValues2D table = new DefaultKeyedValues2D();
        table.addValue(new Double(1.0), "R0", "C0");
        table.addValue(new Double(2.0), "R0", "C1");
        table.addValue(new Double(3.0), "R1", "C0");
        table.addValue(new Double(4.0), "R1", "C1");
        assertEquals(3.0, DataUtilities.calculateRowTotal(table, 0,
                new int[] {0, 1}), EPSILON);
        assertEquals(1.0, DataUtilities.calculateRowTotal(table, 0,
                new int[] {0}), EPSILON);
        assertEquals(2.0, DataUtilities.calculateRowTotal(table, 0,
                new int[] {1}), EPSILON);
        assertEquals(0.0, DataUtilities.calculateRowTotal(table, 0,
                new int[] {}), EPSILON);

        assertEquals(7.0, DataUtilities.calculateRowTotal(table, 1,
                new int[] {0, 1}), EPSILON);
        assertEquals(3.0, DataUtilities.calculateRowTotal(table, 1,
                new int[] {0}), EPSILON);
        assertEquals(4.0, DataUtilities.calculateRowTotal(table, 1,
                new int[] {1}), EPSILON);
        assertEquals(0.0, DataUtilities.calculateRowTotal(table, 1,
                new int[] {}), EPSILON);
        table.setValue(null, "R1", "C1");
        assertEquals(3.0, DataUtilities.calculateRowTotal(table, 1,
                new int[] {0, 1}), EPSILON);
        assertEquals(0.0, DataUtilities.calculateRowTotal(table, 1,
                new int[] {1}), EPSILON);
    }

    /**
     * Some tests for the equal(double[][], double[][]) method.
     */
    public void testEqual() {
        assertTrue(DataUtilities.equal(null, null));
        
        double[][] a = new double[5][];
        double[][] b = new double[5][];
        assertTrue(DataUtilities.equal(a, b));

        a = new double[4][];
        assertFalse(DataUtilities.equal(a, b));
        b = new double[4][];
        assertTrue(DataUtilities.equal(a, b));

        a[0] = new double[6];
        assertFalse(DataUtilities.equal(a, b));
        b[0] = new double[6];
        assertTrue(DataUtilities.equal(a, b));

        a[0][0] = 1.0;
        assertFalse(DataUtilities.equal(a, b));
        b[0][0] = 1.0;
        assertTrue(DataUtilities.equal(a, b));

        a[0][1] = Double.NaN;
        assertFalse(DataUtilities.equal(a, b));
        b[0][1] = Double.NaN;
        assertTrue(DataUtilities.equal(a, b));

        a[0][2] = Double.NEGATIVE_INFINITY;
        assertFalse(DataUtilities.equal(a, b));
        b[0][2] = Double.NEGATIVE_INFINITY;
        assertTrue(DataUtilities.equal(a, b));

        a[0][3] = Double.POSITIVE_INFINITY;
        assertFalse(DataUtilities.equal(a, b));
        b[0][3] = Double.POSITIVE_INFINITY;
        assertTrue(DataUtilities.equal(a, b));

        a[0][4] = Double.POSITIVE_INFINITY;
        assertFalse(DataUtilities.equal(a, b));
        b[0][4] = Double.NEGATIVE_INFINITY;
        assertFalse(DataUtilities.equal(a, b));
        b[0][4] = Double.POSITIVE_INFINITY;
        assertTrue(DataUtilities.equal(a, b));
    }

    /**
     * Some tests for the clone() method.
     */
    public void testClone() {
        double[][] a = new double[1][];
        double[][] b = DataUtilities.clone(a);
        assertTrue(DataUtilities.equal(a, b));
        a[0] = new double[] { 3.0, 4.0 };
        assertFalse(DataUtilities.equal(a, b));
        b[0] = new double[] { 3.0, 4.0 };
        assertTrue(DataUtilities.equal(a, b));

        a = new double[2][3];
        a[0][0] = 1.23;
        a[1][1] = Double.NaN;
        b = DataUtilities.clone(a);
        assertTrue(DataUtilities.equal(a, b));

        a[0][0] = 99.9;
        assertFalse(DataUtilities.equal(a, b));
        b[0][0] = 99.9;
        assertTrue(DataUtilities.equal(a, b));
    }

    /**
     * Runs the test suite using JUnit's text-based runner.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

}

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