/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.]
*
* --------------------------------------
* NormalDistributionFunction2DTests.java
* --------------------------------------
* (C) Copyright 2009, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 28-May-2009 : Version 1 (DG);
*
*/
package org.jfree.data.function.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 junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jfree.data.function.LineFunction2D;
import org.jfree.data.function.NormalDistributionFunction2D;
/**
* Tests for the {@link NormalDistributionFunction2D} class.
*/
public class NormalDistributionFunction2DTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(NormalDistributionFunction2DTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public NormalDistributionFunction2DTests(String name) {
super(name);
}
private static final double EPSILON = 0.000000001;
/**
* Some tests for the constructor.
*/
public void testConstructor() {
NormalDistributionFunction2D f = new NormalDistributionFunction2D(1.0,
2.0);
assertEquals(1.0, f.getMean(), EPSILON);
assertEquals(2.0, f.getStandardDeviation(), EPSILON);
}
/**
* For datasets, the equals() method just checks keys and values.
*/
public void testEquals() {
NormalDistributionFunction2D f1 = new NormalDistributionFunction2D(1.0,
2.0);
NormalDistributionFunction2D f2 = new NormalDistributionFunction2D(1.0,
2.0);
assertTrue(f1.equals(f2));
f1 = new NormalDistributionFunction2D(2.0, 3.0);
assertFalse(f1.equals(f2));
f2 = new NormalDistributionFunction2D(2.0, 3.0);
assertTrue(f1.equals(f2));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
NormalDistributionFunction2D f1 = new NormalDistributionFunction2D(1.0,
2.0);
NormalDistributionFunction2D f2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(f1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
buffer.toByteArray()));
f2 = (NormalDistributionFunction2D) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(f1, f2);
}
/**
* Objects that are equal should have the same hash code otherwise FindBugs
* will tell on us...
*/
public void testHashCode() {
NormalDistributionFunction2D f1 = new NormalDistributionFunction2D(1.0,
2.0);
NormalDistributionFunction2D f2 = new NormalDistributionFunction2D(1.0,
2.0);
assertEquals(f1.hashCode(), f2.hashCode());
}
}