/* ===========================================================
* 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.]
*
* --------------------
* NumberAxisTests.java
* --------------------
* (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: NumberAxisTests.java,v 1.1 2004/08/31 14:31:24 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.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.RectangleEdge;
/**
* Tests for the {@link NumberAxis} class.
*/
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");
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.java2DToValue(75.0, dataArea, RectangleEdge.LEFT);
assertTrue(same(y1, 95.8333333, 0.000001));
double y2 = axis.java2DToValue(75.0, dataArea, RectangleEdge.RIGHT);
assertTrue(same(y2, 95.8333333, 0.000001));
double x1 = axis.java2DToValue(75.0, dataArea, RectangleEdge.TOP);
assertTrue(same(x1, 58.125, 0.000001));
double x2 = axis.java2DToValue(75.0, dataArea, RectangleEdge.BOTTOM);
assertTrue(same(x2, 58.125, 0.000001));
axis.setInverted(true);
double y3 = axis.java2DToValue(75.0, dataArea, RectangleEdge.LEFT);
assertTrue(same(y3, 54.1666667, 0.000001));
double y4 = axis.java2DToValue(75.0, dataArea, RectangleEdge.RIGHT);
assertTrue(same(y4, 54.1666667, 0.000001));
double x3 = axis.java2DToValue(75.0, dataArea, RectangleEdge.TOP);
assertTrue(same(x3, 91.875, 0.000001));
double x4 = axis.java2DToValue(75.0, 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);
}
/**
* A simple test for the auto-range calculation.
*/
public void testAutoRange1() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.setValue(100.0, "Row 1", "Column 1");
dataset.setValue(200.0, "Row 1", "Column 2");
JFreeChart chart = ChartFactory.createBarChart(
"Test",
"Categories",
"Value",
dataset,
PlotOrientation.VERTICAL,
false,
false,
false
);
NumberAxis axis = (NumberAxis) chart.getCategoryPlot().getRangeAxis();
// range should be 0.0 - 210.0
assertTrue(same(axis.getLowerBound(), 0.0, 0.00001));
assertTrue(same(axis.getUpperBound(), 210.0, 0.00001));
}
/**
* A simple test for the auto-range calculation.
*/
public void testAutoRange2() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.setValue(100.0, "Row 1", "Column 1");
dataset.setValue(200.0, "Row 1", "Column 2");
JFreeChart chart = ChartFactory.createBarChart(
"Test",
"Categories",
"Value",
dataset,
PlotOrientation.VERTICAL,
false,
false,
false
);
NumberAxis axis = (NumberAxis) chart.getCategoryPlot().getRangeAxis();
axis.setAutoRangeIncludesZero(false);
// range should be 100.0 - 205.0
assertTrue(same(axis.getLowerBound(), 95.0, 0.00001));
assertTrue(same(axis.getUpperBound(), 205.0, 0.00001));
}
/**
* A simple test for the auto-range calculation.
*/
public void testAutoRange3() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.setValue(100.0, "Row 1", "Column 1");
dataset.setValue(200.0, "Row 1", "Column 2");
JFreeChart chart = ChartFactory.createBarChart(
"Test",
"Categories",
"Value",
dataset,
PlotOrientation.VERTICAL,
false,
false,
false
);
NumberAxis axis = (NumberAxis) chart.getCategoryPlot().getRangeAxis();
axis.setAutoRangeIncludesZero(false);
// range should be 100.0 - 205.0
assertTrue(same(axis.getLowerBound(), 95.0, 0.00001));
assertTrue(same(axis.getUpperBound(), 205.0, 0.00001));
DefaultCategoryDataset dataset2 = new DefaultCategoryDataset();
dataset2.setValue(900.0, "Row 1", "Column 1");
dataset2.setValue(1000.0, "Row 1", "Column 2");
chart.getCategoryPlot().setDataset(dataset2);
assertTrue(same(axis.getLowerBound(), 895.0, 0.00001));
assertTrue(same(axis.getUpperBound(), 1005.0, 0.00001));
}
}