/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, 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.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------------------
* DialBackgroundTests.java
* ------------------------
* (C) Copyright 2006-2007, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 03-Nov-2006 : Version 1 (DG);
*
*/
package org.jfree.chart.plot.dial.junit;
import java.awt.Color;
import java.awt.GradientPaint;
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.chart.plot.dial.DialBackground;
import org.jfree.ui.GradientPaintTransformType;
import org.jfree.ui.StandardGradientPaintTransformer;
/**
* Tests for the {@link DialBackground} class.
*/
public class DialBackgroundTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(DialBackgroundTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public DialBackgroundTests(String name) {
super(name);
}
/**
* Confirm that the equals method can distinguish all the required fields.
*/
public void testEquals() {
DialBackground b1 = new DialBackground();
DialBackground b2 = new DialBackground();
assertTrue(b1.equals(b2));
// paint
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f,
Color.yellow));
assertFalse(b1.equals(b2));
b2.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f,
Color.yellow));
assertTrue(b1.equals(b2));
// gradient paint transformer
b1.setGradientPaintTransformer(new StandardGradientPaintTransformer(
GradientPaintTransformType.CENTER_VERTICAL));
assertFalse(b1.equals(b2));
b2.setGradientPaintTransformer(new StandardGradientPaintTransformer(
GradientPaintTransformType.CENTER_VERTICAL));
assertTrue(b1.equals(b2));
// check an inherited attribute
b1.setVisible(false);
assertFalse(b1.equals(b2));
b2.setVisible(false);
assertTrue(b1.equals(b2));
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
public void testHashCode() {
DialBackground b1 = new DialBackground(Color.red);
DialBackground b2 = new DialBackground(Color.red);
assertTrue(b1.equals(b2));
int h1 = b1.hashCode();
int h2 = b2.hashCode();
assertEquals(h1, h2);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
// test default instance
DialBackground b1 = new DialBackground();
DialBackground b2 = null;
try {
b2 = (DialBackground) b1.clone();
}
catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(b1 != b2);
assertTrue(b1.getClass() == b2.getClass());
assertTrue(b1.equals(b2));
// test a customised instance
b1 = new DialBackground();
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f,
Color.green));
b1.setGradientPaintTransformer(new StandardGradientPaintTransformer(
GradientPaintTransformType.CENTER_VERTICAL));
b2 = null;
try {
b2 = (DialBackground) b1.clone();
}
catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(b1 != b2);
assertTrue(b1.getClass() == b2.getClass());
assertTrue(b1.equals(b2));
// check that the listener lists are independent
MyDialLayerChangeListener l1 = new MyDialLayerChangeListener();
b1.addChangeListener(l1);
assertTrue(b1.hasListener(l1));
assertFalse(b2.hasListener(l1));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
// test a default instance
DialBackground b1 = new DialBackground();
DialBackground b2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(b1);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray()));
b2 = (DialBackground) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(b1, b2);
// test a customised instance
b1 = new DialBackground();
b1.setPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f,
Color.green));
b1.setGradientPaintTransformer(new StandardGradientPaintTransformer(
GradientPaintTransformType.CENTER_VERTICAL));
b2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(b1);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray()));
b2 = (DialBackground) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(b1, b2);
}
}