/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2014, 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.]
*
* --------------------------
* HistogramDatasetTests.java
* --------------------------
* (C) Copyright 2005-2014, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 10-Jan-2005 : Version 1 (DG);
* 21-May-2007 : Added testClearObservations (DG);
*
*/
package org.jfree.data.statistics;
import org.junit.Test;
import org.jfree.chart.TestUtils;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
/**
* Tests for the {@link HistogramDataset} class.
*/
public class HistogramDatasetTest {
/**
* Ensure that the equals() method can distinguish all fields.
*/
@Test
public void testEquals() {
HistogramDataset d1 = new HistogramDataset("Dataset 1");
HistogramDataset d2 = new HistogramDataset("Dataset 1");
assertEquals(d1, d2);
d1.addBin(new HistogramBin(1.0, 2.0));
assertFalse(d1.equals(d2));
d2.addBin(new HistogramBin(1.0, 2.0));
assertEquals(d1, d2);
}
/**
* Some checks for the clone() method.
*/
@Test
public void testCloning() throws CloneNotSupportedException {
HistogramDataset d1 = new HistogramDataset("Dataset 1");
HistogramDataset d2 = (HistogramDataset) d1.clone();
assertNotSame(d1, d2);
assertSame(d1.getClass(), d2.getClass());
assertEquals(d1, d2);
// check that clone is independent of the original
d2.addBin(new HistogramBin(2.0, 3.0));
d2.addObservation(2.3);
assertFalse(d1.equals(d2));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
@Test
public void testSerialization() {
HistogramDataset d1 = new HistogramDataset("D1");
HistogramDataset d2 = (HistogramDataset) TestUtils.serialised(d1);
assertEquals(d1, d2);
}
private static final double EPSILON = 0.0000000001;
/**
* Some checks for the clearObservations() method.
*/
@Test
public void testClearObservations() {
HistogramDataset d1 = new HistogramDataset("D1");
d1.clearObservations();
assertEquals(0, d1.getItemCount(0));
d1.addBin(new HistogramBin(0.0, 1.0));
d1.addObservation(0.5);
assertEquals(1.0, d1.getYValue(0, 0), EPSILON);
}
/**
* Some checks for the removeAllBins() method.
*/
@Test
public void testRemoveAllBins() {
HistogramDataset d1 = new HistogramDataset("D1");
d1.addBin(new HistogramBin(0.0, 1.0));
d1.addObservation(0.5);
d1.addBin(new HistogramBin(2.0, 3.0));
assertEquals(2, d1.getItemCount(0));
d1.removeAllBins();
assertEquals(0, d1.getItemCount(0));
}
}