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- /* ===========================================================
- * 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.]
- *
- * -------------------------
- * HistogramDatasetTest.java
- * -------------------------
- * (C) Copyright 2004-2013, by Object Refinery Limited.
- *
- * Original Author: David Gilbert (for Object Refinery Limited);
- * Contributor(s): -;
- *
- * Changes
- * -------
- * 01-Mar-2004 : Version 1 (DG);
- * 08-Jun-2005 : Added test for getSeriesKey(int) bug (DG);
- * 03-Aug-2006 : Added testAddSeries() and testBinBoundaries() method (DG);
- * 22-May-2008 : Added testAddSeries2() and enhanced testCloning() (DG);
- * 08-Dec-2009 : Added test2902842() for patch at SourceForge (DG);
- *
- */
- package org.jfree.data.statistics;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertNotNull;
- import org.jfree.chart.TestUtilities;
- import org.jfree.data.general.DatasetChangeEvent;
- import org.jfree.data.general.DatasetChangeListener;
- import org.junit.Test;
- /**
- * Tests for the {@link HistogramDataset} class.
- */
- public class HistogramDatasetTest implements DatasetChangeListener {
- private static final double EPSILON = 0.0000000001;
- /**
- * Some checks that the correct values are assigned to bins.
- */
- @Test
- public void testBins() {
- double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
- HistogramDataset hd = new HistogramDataset();
- hd.addSeries("Series 1", values, 5);
- assertEquals(hd.getYValue(0, 0), 3.0, EPSILON);
- assertEquals(hd.getYValue(0, 1), 3.0, EPSILON);
- assertEquals(hd.getYValue(0, 2), 2.0, EPSILON);
- assertEquals(hd.getYValue(0, 3), 0.0, EPSILON);
- assertEquals(hd.getYValue(0, 4), 1.0, EPSILON);
- }
- /**
- * Confirm that the equals method can distinguish all the required fields.
- */
- @Test
- public void testEquals() {
- double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
- HistogramDataset d1 = new HistogramDataset();
- d1.addSeries("Series 1", values, 5);
- HistogramDataset d2 = new HistogramDataset();
- d2.addSeries("Series 1", values, 5);
- assertTrue(d1.equals(d2));
- assertTrue(d2.equals(d1));
- d1.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
- assertFalse(d1.equals(d2));
- d2.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
- assertTrue(d1.equals(d2));
- }
- /**
- * Confirm that cloning works.
- */
- @Test
- public void testCloning() throws CloneNotSupportedException {
- double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
- HistogramDataset d1 = new HistogramDataset();
- d1.addSeries("Series 1", values, 5);
- HistogramDataset d2 = (HistogramDataset) d1.clone();
- assertTrue(d1 != d2);
- assertTrue(d1.getClass() == d2.getClass());
- assertTrue(d1.equals(d2));
- // simple check for independence
- d1.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
- assertFalse(d1.equals(d2));
- d2.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
- assertTrue(d1.equals(d2));
- }
- /**
- * Serialize an instance, restore it, and check for equality.
- */
- @Test
- public void testSerialization() {
- double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
- HistogramDataset d1 = new HistogramDataset();
- d1.addSeries("Series 1", values, 5);
- HistogramDataset d2 = (HistogramDataset) TestUtilities.serialised(d1);
- assertEquals(d1, d2);
- // simple check for independence
- d1.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
- assertFalse(d1.equals(d2));
- d2.addSeries("Series 2", new double[] {1.0, 2.0, 3.0}, 2);
- assertTrue(d1.equals(d2));
- }
- /**
- * A test for a bug reported in the forum where the series name isn't being
- * returned correctly.
- */
- @Test
- public void testGetSeriesKey() {
- double[] values = {1.0, 2.0, 3.0, 4.0, 6.0, 12.0, 5.0, 6.3, 4.5};
- HistogramDataset d1 = new HistogramDataset();
- d1.addSeries("Series 1", values, 5);
- assertEquals("Series 1", d1.getSeriesKey(0));
- }
- /**
- * Some checks for the addSeries() method.
- */
- @Test
- public void testAddSeries() {
- double[] values = {-1.0, 0.0, 0.1, 0.9, 1.0, 1.1, 1.9, 2.0, 3.0};
- HistogramDataset d = new HistogramDataset();
- d.addSeries("S1", values, 2, 0.0, 2.0);
- assertEquals(0.0, d.getStartXValue(0, 0), EPSILON);
- assertEquals(1.0, d.getEndXValue(0, 0), EPSILON);
- assertEquals(4.0, d.getYValue(0, 0), EPSILON);
- assertEquals(1.0, d.getStartXValue(0, 1), EPSILON);
- assertEquals(2.0, d.getEndXValue(0, 1), EPSILON);
- assertEquals(5.0, d.getYValue(0, 1), EPSILON);
- }
- /**
- * Another check for the addSeries() method.
- */
- @Test
- public void testAddSeries2() {
- double[] values = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
- HistogramDataset hd = new HistogramDataset();
- hd.addSeries("S1", values, 5);
- assertEquals(0.0, hd.getStartXValue(0, 0), EPSILON);
- assertEquals(1.0, hd.getEndXValue(0, 0), EPSILON);
- assertEquals(1.0, hd.getYValue(0, 0), EPSILON);
- assertEquals(1.0, hd.getStartXValue(0, 1), EPSILON);
- assertEquals(2.0, hd.getEndXValue(0, 1), EPSILON);
- assertEquals(1.0, hd.getYValue(0, 1), EPSILON);
- assertEquals(2.0, hd.getStartXValue(0, 2), EPSILON);
- assertEquals(3.0, hd.getEndXValue(0, 2), EPSILON);
- assertEquals(1.0, hd.getYValue(0, 2), EPSILON);
- assertEquals(3.0, hd.getStartXValue(0, 3), EPSILON);
- assertEquals(4.0, hd.getEndXValue(0, 3), EPSILON);
- assertEquals(1.0, hd.getYValue(0, 3), EPSILON);
- assertEquals(4.0, hd.getStartXValue(0, 4), EPSILON);
- assertEquals(5.0, hd.getEndXValue(0, 4), EPSILON);
- assertEquals(2.0, hd.getYValue(0, 4), EPSILON);
- }
- /**
- * This test is derived from a reported bug.
- */
- @Test
- public void testBinBoundaries() {
- double[] values = {-5.000000000000286E-5};
- int bins = 1260;
- double minimum = -0.06307522528160199;
- double maximum = 0.06297522528160199;
- HistogramDataset d = new HistogramDataset();
- d.addSeries("S1", values, bins, minimum, maximum);
- assertEquals(0.0, d.getYValue(0, 629), EPSILON);
- assertEquals(1.0, d.getYValue(0, 630), EPSILON);
- assertEquals(0.0, d.getYValue(0, 631), EPSILON);
- assertTrue(values[0] > d.getStartXValue(0, 630));
- assertTrue(values[0] < d.getEndXValue(0, 630));
- }
- /**
- * Some checks for bug 1553088. An IndexOutOfBoundsException is thrown
- * when a data value is *very* close to the upper limit of the last bin.
- */
- @Test
- public void test1553088() {
- double[] values = {-1.0, 0.0, -Double.MIN_VALUE, 3.0};
- HistogramDataset d = new HistogramDataset();
- d.addSeries("S1", values, 2, -1.0, 0.0);
- assertEquals(-1.0, d.getStartXValue(0, 0), EPSILON);
- assertEquals(-0.5, d.getEndXValue(0, 0), EPSILON);
- assertEquals(1.0, d.getYValue(0, 0), EPSILON);
- assertEquals(-0.5, d.getStartXValue(0, 1), EPSILON);
- assertEquals(0.0, d.getEndXValue(0, 1), EPSILON);
- assertEquals(3.0, d.getYValue(0, 1), EPSILON);
- }
- /**
- * A test to show the limitation addressed by patch 2902842.
- */
- @Test
- public void test2902842() {
- this.lastEvent = null;
- double[] values = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0};
- HistogramDataset hd = new HistogramDataset();
- hd.addChangeListener(this);
- hd.addSeries("S1", values, 5);
- assertNotNull(this.lastEvent);
- }
- /**
- * A reference to the last event received by the datasetChanged() method.
- */
- private DatasetChangeEvent lastEvent;
- /**
- * Receives event notification.
- *
- * @param event the event.
- */
- @Override
- public void datasetChanged(DatasetChangeEvent event) {
- this.lastEvent = event;
- }
- }
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