/* ===========================================================
* 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.]
*
* -----------------------------
* CandlestickRendererTests.java
* -----------------------------
* (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 25-Mar-2003 : Version 1 (DG);
* 22-Oct-2003 : Added hashCode test (DG);
* 17-Aug-2006 : Strengthened testEquals() and added testFindRangeBounds()
* method (DG);
* 05-Mar-2007 : Added new field to testEquals() (DG);
* 08-Oct-2007 : Added tests for new volumePaint field (DG);
*
*/
package org.jfree.chart.renderer.xy.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 java.util.Date;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jfree.chart.renderer.xy.CandlestickRenderer;
import org.jfree.data.Range;
import org.jfree.data.xy.DefaultOHLCDataset;
import org.jfree.data.xy.OHLCDataItem;
import org.jfree.data.xy.OHLCDataset;
/**
* Tests for the {@link CandlestickRenderer} class.
*/
public class CandlestickRendererTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(CandlestickRendererTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public CandlestickRendererTests(String name) {
super(name);
}
private static final double EPSILON = 0.0000000001;
/**
* Some checks for the constructor.
*/
public void testConstructor() {
CandlestickRenderer r1 = new CandlestickRenderer();
// check defaults
assertEquals(Color.green, r1.getUpPaint());
assertEquals(Color.red, r1.getDownPaint());
assertFalse(r1.getUseOutlinePaint());
assertTrue(r1.getDrawVolume());
assertEquals(Color.gray, r1.getVolumePaint());
assertEquals(-1.0, r1.getCandleWidth(), EPSILON);
}
/**
* Check that the equals() method distinguishes all fields.
*/
public void testEquals() {
CandlestickRenderer r1 = new CandlestickRenderer();
CandlestickRenderer r2 = new CandlestickRenderer();
assertEquals(r1, r2);
// upPaint
r1.setUpPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f,
Color.white));
assertFalse(r1.equals(r2));
r2.setUpPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f,
Color.white));
assertTrue(r1.equals(r2));
// downPaint
r1.setDownPaint(new GradientPaint(5.0f, 6.0f, Color.green, 7.0f, 8.0f,
Color.yellow));
assertFalse(r1.equals(r2));
r2.setDownPaint(new GradientPaint(5.0f, 6.0f, Color.green, 7.0f, 8.0f,
Color.yellow));
assertTrue(r1.equals(r2));
// drawVolume
r1.setDrawVolume(false);
assertFalse(r1.equals(r2));
r2.setDrawVolume(false);
assertTrue(r1.equals(r2));
// candleWidth
r1.setCandleWidth(3.3);
assertFalse(r1.equals(r2));
r2.setCandleWidth(3.3);
assertTrue(r1.equals(r2));
// maxCandleWidthInMilliseconds
r1.setMaxCandleWidthInMilliseconds(123);
assertFalse(r1.equals(r2));
r2.setMaxCandleWidthInMilliseconds(123);
assertTrue(r1.equals(r2));
// autoWidthMethod
r1.setAutoWidthMethod(CandlestickRenderer.WIDTHMETHOD_SMALLEST);
assertFalse(r1.equals(r2));
r2.setAutoWidthMethod(CandlestickRenderer.WIDTHMETHOD_SMALLEST);
assertTrue(r1.equals(r2));
// autoWidthFactor
r1.setAutoWidthFactor(0.22);
assertFalse(r1.equals(r2));
r2.setAutoWidthFactor(0.22);
assertTrue(r1.equals(r2));
// autoWidthGap
r1.setAutoWidthGap(1.1);
assertFalse(r1.equals(r2));
r2.setAutoWidthGap(1.1);
assertTrue(r1.equals(r2));
r1.setUseOutlinePaint(true);
assertFalse(r1.equals(r2));
r2.setUseOutlinePaint(true);
assertTrue(r1.equals(r2));
r1.setVolumePaint(Color.blue);
assertFalse(r1.equals(r2));
r2.setVolumePaint(Color.blue);
assertTrue(r1.equals(r2));
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
public void testHashcode() {
CandlestickRenderer r1 = new CandlestickRenderer();
CandlestickRenderer r2 = new CandlestickRenderer();
assertTrue(r1.equals(r2));
int h1 = r1.hashCode();
int h2 = r2.hashCode();
assertEquals(h1, h2);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
CandlestickRenderer r1 = new CandlestickRenderer();
CandlestickRenderer r2 = null;
try {
r2 = (CandlestickRenderer) r1.clone();
}
catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(r1 != r2);
assertTrue(r1.getClass() == r2.getClass());
assertTrue(r1.equals(r2));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
CandlestickRenderer r1 = new CandlestickRenderer();
CandlestickRenderer r2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(r1);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray()));
r2 = (CandlestickRenderer) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(r1, r2);
}
/**
* Some checks for the findRangeBounds() method.
*/
public void testFindRangeBounds() {
CandlestickRenderer renderer = new CandlestickRenderer();
OHLCDataItem item1 = new OHLCDataItem(new Date(1L), 2.0, 4.0, 1.0, 3.0,
100);
OHLCDataset dataset = new DefaultOHLCDataset("S1",
new OHLCDataItem[] {item1});
Range range = renderer.findRangeBounds(dataset);
assertEquals(new Range(1.0, 4.0), range);
OHLCDataItem item2 = new OHLCDataItem(new Date(1L), -1.0, 3.0, -1.0,
3.0, 100);
dataset = new DefaultOHLCDataset("S1", new OHLCDataItem[] {item1,
item2});
range = renderer.findRangeBounds(dataset);
assertEquals(new Range(-1.0, 4.0), range);
// try an empty dataset - should return a null range
dataset = new DefaultOHLCDataset("S1", new OHLCDataItem[] {});
range = renderer.findRangeBounds(dataset);
assertNull(range);
// try a null dataset - should return a null range
range = renderer.findRangeBounds(null);
assertNull(range);
}
}