praktikum-holons/jars/jfreechart-1.0.19/tests/org/jfree/chart/renderer/xy/ClusteredXYBarRendererTest.java

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2013, 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.
 *
 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
 * Other names may be trademarks of their respective owners.]
 *
 * -------------------------------
 * ClusteredXYBarRendererTest.java
 * -------------------------------
 * (C) Copyright 2003-2013, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 25-Mar-2003 : Version 1 (DG);
 * 22-Oct-2003 : Added hashCode test (DG);
 * 10-Jul-2007 : Fixed compile errors (DG);
 * 22-Apr-2008 : Added testPublicCloneable() (DG);
 *
 */

package org.jfree.chart.renderer.xy;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;

import org.jfree.chart.TestUtilities;

import org.jfree.data.Range;
import org.jfree.data.xy.DefaultIntervalXYDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.util.PublicCloneable;
import org.junit.Test;

/**
 * Tests for the {@link ClusteredXYBarRenderer} class.
 */
public class ClusteredXYBarRendererTest {

    /**
     * Check that the equals() method distinguishes all fields.
     */
    @Test
    public void testEquals() {
        ClusteredXYBarRenderer r1 = new ClusteredXYBarRenderer();
        ClusteredXYBarRenderer r2 = new ClusteredXYBarRenderer();
        assertEquals(r1, r2);
        assertEquals(r2, r1);

        r1 = new ClusteredXYBarRenderer(1.2, false);
        assertFalse(r1.equals(r2));
        r2 = new ClusteredXYBarRenderer(1.2, false);
        assertTrue(r1.equals(r2));

        r1 = new ClusteredXYBarRenderer(1.2, true);
        assertFalse(r1.equals(r2));
        r2 = new ClusteredXYBarRenderer(1.2, true);
        assertTrue(r1.equals(r2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    @Test
    public void testHashcode() {
        ClusteredXYBarRenderer r1 = new ClusteredXYBarRenderer();
        ClusteredXYBarRenderer r2 = new ClusteredXYBarRenderer();
        assertTrue(r1.equals(r2));
        int h1 = r1.hashCode();
        int h2 = r2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    @Test
    public void testCloning() throws CloneNotSupportedException {
        ClusteredXYBarRenderer r1 = new ClusteredXYBarRenderer();
        ClusteredXYBarRenderer r2 = (ClusteredXYBarRenderer) r1.clone();
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));
    }

    /**
     * Verify that this class implements {@link PublicCloneable}.
     */
    @Test
    public void testPublicCloneable() {
        ClusteredXYBarRenderer r1 = new ClusteredXYBarRenderer();
        assertTrue(r1 instanceof PublicCloneable);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    @Test
    public void testSerialization() {
        ClusteredXYBarRenderer r1 = new ClusteredXYBarRenderer();
        ClusteredXYBarRenderer r2 = (ClusteredXYBarRenderer) 
                TestUtilities.serialised(r1);
        assertEquals(r1, r2);
    }

    private static final double EPSILON = 0.0000000001;

    /**
     * Some checks for the findDomainBounds() method (which requires special
     * handling when the centerBarAtStartValue flag is set to true).
     */
    @Test
    public void testFindDomainBounds() {
        AbstractXYItemRenderer renderer = new ClusteredXYBarRenderer();
        XYDataset dataset = createSampleDataset1();
        Range r = renderer.findDomainBounds(dataset);
        assertEquals(0.9, r.getLowerBound(), EPSILON);
        assertEquals(13.1, r.getUpperBound(), EPSILON);

        renderer = new ClusteredXYBarRenderer(0.0, true);
        r = renderer.findDomainBounds(dataset);
        assertEquals(0.8, r.getLowerBound(), EPSILON);
        assertEquals(13.0, r.getUpperBound(), EPSILON);

        // check that a null dataset returns null bounds
        assertTrue(renderer.findDomainBounds(null) == null);
    }

    /**
     * Creates a sample dataset for testing.
     *
     * @return A sample dataset.
     */
    public DefaultIntervalXYDataset createSampleDataset1() {
        DefaultIntervalXYDataset d = new DefaultIntervalXYDataset();
        double[] x1 = new double[] {1.0, 2.0, 3.0};
        double[] x1Start = new double[] {0.9, 1.9, 2.9};
        double[] x1End = new double[] {1.1, 2.1, 3.1};
        double[] y1 = new double[] {4.0, 5.0, 6.0};
        double[] y1Start = new double[] {1.09, 2.09, 3.09};
        double[] y1End = new double[] {1.11, 2.11, 3.11};
        double[][] data1 = new double[][] {x1, x1Start, x1End, y1, y1Start,
                y1End};
        d.addSeries("S1", data1);

        double[] x2 = new double[] {11.0, 12.0, 13.0};
        double[] x2Start = new double[] {10.9, 11.9, 12.9};
        double[] x2End = new double[] {11.1, 12.1, 13.1};
        double[] y2 = new double[] {14.0, 15.0, 16.0};
        double[] y2Start = new double[] {11.09, 12.09, 13.09};
        double[] y2End = new double[] {11.11, 12.11, 13.11};
        double[][] data2 = new double[][] {x2, x2Start, x2End, y2, y2Start,
                y2End};
        d.addSeries("S2", data2);
        return d;
    }

}