www.pudn.com > jfreechart-0.9.12.zip > NumberAxisTests.java
/* ======================================
* JFreeChart : a free Java chart library
* ======================================
*
* Project Info: http://www.jfree.org/jfreechart/index.html
* Project Lead: David Gilbert (david.gilbert@object-refinery.com);
*
* (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
*
* 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.
*
* --------------------
* NumberAxisTests.java
* --------------------
* (C) Copyright 2003 by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: NumberAxisTests.java,v 1.7 2003/09/03 15:08:48 mungady Exp $
*
* Changes
* -------
* 26-Mar-2003 : Version 1 (DG);
* 14-Aug-2003 : Added tests for equals(...) method (DG);
*
*/
package org.jfree.chart.axis.junit;
import java.awt.geom.Rectangle2D;
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.text.DecimalFormat;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.ui.RectangleEdge;
/**
* Tests for the {@link NumberAxis} class.
*
* @author David Gilbert
*/
public class NumberAxisTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return the test suite.
*/
public static Test suite() {
return new TestSuite(NumberAxisTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public NumberAxisTests(String name) {
super(name);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
NumberAxis a1 = new NumberAxis("Test");
NumberAxis a2 = null;
try {
a2 = (NumberAxis) a1.clone();
}
catch (CloneNotSupportedException e) {
System.err.println("NumberAxisTests.testCloning: failed to clone.");
}
assertTrue(a1 != a2);
assertTrue(a1.getClass() == a2.getClass());
assertTrue(a1.equals(a2));
}
/**
* Confirm that the equals method can distinguish all the required fields.
*/
public void testEquals() {
NumberAxis a1 = new NumberAxis("Test");
NumberAxis a2 = new NumberAxis("Test");
boolean b = a1.equals(a2);
assertTrue(a1.equals(a2));
//private boolean autoRangeIncludesZero;
a1.setAutoRangeIncludesZero(false);
assertFalse(a1.equals(a2));
a2.setAutoRangeIncludesZero(false);
assertTrue(a1.equals(a2));
//private boolean autoRangeStickyZero;
a1.setAutoRangeStickyZero(false);
assertFalse(a1.equals(a2));
a2.setAutoRangeStickyZero(false);
assertTrue(a1.equals(a2));
//private NumberTickUnit tickUnit;
a1.setTickUnit(new NumberTickUnit(25.0));
assertFalse(a1.equals(a2));
a2.setTickUnit(new NumberTickUnit(25.0));
assertTrue(a1.equals(a2));
//private NumberFormat numberFormatOverride;
a1.setNumberFormatOverride(new DecimalFormat("0.00"));
assertFalse(a1.equals(a2));
a2.setNumberFormatOverride(new DecimalFormat("0.00"));
assertTrue(a1.equals(a2));
}
/**
* Tests two doubles for 'near enough' equality.
*
* @param d1 number 1.
* @param d2 number 2.
* @param tolerance maximum tolerance.
*
* @return A boolean.
*/
private boolean same(double d1, double d2, double tolerance) {
return (Math.abs(d1 - d2) < tolerance);
}
/**
* Test the translation of Java2D values to data values.
*/
public void testTranslateJava2DToValue() {
NumberAxis axis = new NumberAxis();
axis.setRange(50.0, 100.0);
Rectangle2D dataArea = new Rectangle2D.Double(10.0, 50.0, 400.0, 300.0);
double y1 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.LEFT);
assertTrue(same(y1, 95.8333333, 0.000001));
double y2 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.RIGHT);
assertTrue(same(y2, 95.8333333, 0.000001));
double x1 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.TOP);
assertTrue(same(x1, 58.125, 0.000001));
double x2 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.BOTTOM);
assertTrue(same(x2, 58.125, 0.000001));
axis.setInverted(true);
double y3 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.LEFT);
assertTrue(same(y3, 54.1666667, 0.000001));
double y4 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.RIGHT);
assertTrue(same(y4, 54.1666667, 0.000001));
double x3 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.TOP);
assertTrue(same(x3, 91.875, 0.000001));
double x4 = axis.translateJava2DtoValue(75.0f, dataArea, RectangleEdge.BOTTOM);
assertTrue(same(x4, 91.875, 0.000001));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
NumberAxis a1 = new NumberAxis("Test Axis");
NumberAxis a2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(a1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
a2 = (NumberAxis) in.readObject();
in.close();
}
catch (Exception e) {
System.out.println(e.toString());
}
assertEquals(a1, a2);
}
}