/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------
* RangeTests.java
* ---------------
* (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: RangeTests.java,v 1.1 2004/08/31 15:31:05 mungady Exp $
*
* Changes
* -------
* 14-Aug-2003 : Version 1 (DG);
*
*/
package org.jfree.data.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.Range;
/**
* Tests for the {@link Range} class.
*/
public class RangeTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(RangeTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public RangeTests(final String name) {
super(name);
}
/**
* Confirm that the equals method can distinguish all the required fields.
*/
public void testEquals() {
Range r1 = new Range(0.0, 1.0);
Range r2 = new Range(0.0, 1.0);
assertEquals(r1, r2);
assertEquals(r2, r1);
r1 = new Range(0.0, 1.0);
r2 = new Range(0.5, 1.0);
assertFalse(r1.equals(r2));
r1 = new Range(0.0, 1.0);
r2 = new Range(0.0, 2.0);
assertFalse(r1.equals(r2));
}
/**
* Simple tests for the contains() method.
*/
public void testContains() {
Range r1 = new Range(0.0, 1.0);
assertFalse(r1.contains(Double.NaN));
assertFalse(r1.contains(Double.NEGATIVE_INFINITY));
assertFalse(r1.contains(-1.0));
assertTrue(r1.contains(0.0));
assertTrue(r1.contains(0.5));
assertTrue(r1.contains(1.0));
assertFalse(r1.contains(2.0));
assertFalse(r1.contains(Double.POSITIVE_INFINITY));
}
/**
* Tests the constrain() method for various values.
*/
public void testConstrain() {
Range r1 = new Range(0.0, 1.0);
double d = r1.constrain(0.5);
assertEquals(0.5, d, 0.0000001);
d = r1.constrain(0.0);
assertEquals(0.0, d, 0.0000001);
d = r1.constrain(1.0);
assertEquals(1.0, d, 0.0000001);
d = r1.constrain(-1.0);
assertEquals(0.0, d, 0.0000001);
d = r1.constrain(2.0);
assertEquals(1.0, d, 0.0000001);
d = r1.constrain(Double.POSITIVE_INFINITY);
assertEquals(1.0, d, 0.0000001);
d = r1.constrain(Double.NEGATIVE_INFINITY);
assertEquals(0.0, d, 0.0000001);
d = r1.constrain(Double.NaN);
assertTrue(Double.isNaN(d));
}
/**
* Simple tests for the intersects() method.
*/
public void testIntersects() {
Range r1 = new Range(0.0, 1.0);
assertFalse(r1.intersects(-2.0, -1.0));
assertFalse(r1.intersects(-2.0, 0.0));
assertTrue(r1.intersects(-2.0, 0.5));
assertTrue(r1.intersects(-2.0, 1.0));
assertTrue(r1.intersects(-2.0, 1.5));
assertTrue(r1.intersects(0.0, 0.5));
assertTrue(r1.intersects(0.0, 1.0));
assertTrue(r1.intersects(0.0, 1.5));
assertTrue(r1.intersects(0.5, 0.6));
assertTrue(r1.intersects(0.5, 1.0));
assertTrue(r1.intersects(0.5, 1.5));
assertFalse(r1.intersects(1.0, 1.1));
assertFalse(r1.intersects(1.5, 2.0));
}
/**
* A simple test for the expand() method.
*/
public void testExpand() {
Range r1 = new Range(0.0, 100.0);
Range r2 = Range.expand(r1, 0.10, 0.10);
assertEquals(-10.0, r2.getLowerBound(), 0.001);
assertEquals(110.0, r2.getUpperBound(), 0.001);
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
final Range r1 = new Range(25.0, 133.42);
Range r2 = null;
try {
final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
final ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(r1);
out.close();
final ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray())
);
r2 = (Range) in.readObject();
in.close();
}
catch (Exception e) {
System.out.println(e.toString());
}
assertEquals(r1, r2);
}
}