paintmaptests.java

JFreeChart是做统计图表的,、混合图、甘特图以及一些仪表盘

/* ===========================================================
 * 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.]
 *
 * ------------------
 * PaintMapTests.java
 * ------------------
 * (C) Copyright 2006, 2007, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 27-Sep-2006 : Version 1 (DG);
 * 17-Jan-2007 : Added testKeysOfDifferentClasses() (DG);
 *
 */

package org.jfree.chart.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.PaintMap;

/**
 * Some tests for the {@link PaintMap} class.
 */
public class PaintMapTests extends TestCase {

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(PaintMapTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public PaintMapTests(String name) {
        super(name);
    }

    /**
     * Some checks for the getPaint() method.
     */
    public void testGetPaint() {
        PaintMap m1 = new PaintMap();
        assertEquals(null, m1.getPaint("A"));
        m1.put("A", Color.red);
        assertEquals(Color.red, m1.getPaint("A"));
        m1.put("A", null);
        assertEquals(null, m1.getPaint("A"));
        
        // a null key should throw an IllegalArgumentException
        boolean pass = false;
        try {
            m1.getPaint(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the put() method.
     */
    public void testPut() {
        PaintMap m1 = new PaintMap();
        m1.put("A", Color.red);
        assertEquals(Color.red, m1.getPaint("A"));
        
        // a null key should throw an IllegalArgumentException
        boolean pass = false;
        try {
            m1.put(null, Color.blue);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }
    
    /**
     * Some checks for the equals() method.
     */
    public void testEquals() {
        PaintMap m1 = new PaintMap();
        PaintMap m2 = new PaintMap();
        assertTrue(m1.equals(m1));
        assertTrue(m1.equals(m2));
        assertFalse(m1.equals(null));
        assertFalse(m1.equals("ABC"));
        
        m1.put("K1", Color.red);
        assertFalse(m1.equals(m2));
        m2.put("K1", Color.red);
        assertTrue(m1.equals(m2));
        
        m1.put("K2", new GradientPaint(1.0f, 2.0f, Color.green, 3.0f, 4.0f, 
                Color.yellow));
        assertFalse(m1.equals(m2));
        m2.put("K2", new GradientPaint(1.0f, 2.0f, Color.green, 3.0f, 4.0f, 
                Color.yellow));
        assertTrue(m1.equals(m2));
        
        m1.put("K2", null);
        assertFalse(m1.equals(m2));
        m2.put("K2", null);
        assertTrue(m1.equals(m2));
    }
    
    /**
     * Some checks for cloning.
     */
    public void testCloning() {
        PaintMap m1 = new PaintMap();
        PaintMap m2 = null;
        try {
            m2 = (PaintMap) m1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(m1.equals(m2));
        
        m1.put("K1", Color.red);
        m1.put("K2", new GradientPaint(1.0f, 2.0f, Color.green, 3.0f, 4.0f, 
                Color.yellow));
        try {
            m2 = (PaintMap) m1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(m1.equals(m2));
    }
    
    /**
     * A check for serialization.
     */
    public void testSerialization1() {
        PaintMap m1 = new PaintMap();
        PaintMap m2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(m1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            m2 = (PaintMap) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(m1, m2);
    }

    /**
     * A check for serialization.
     */
    public void testSerialization2() {
        PaintMap m1 = new PaintMap();
        m1.put("K1", Color.red);
        m1.put("K2", new GradientPaint(1.0f, 2.0f, Color.green, 3.0f, 4.0f, 
                Color.yellow));
        PaintMap m2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(m1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            m2 = (PaintMap) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(m1, m2);
    }
    
    /**
     * This test covers a bug reported in the forum:
     * 
     * http://www.jfree.org/phpBB2/viewtopic.php?t=19980
     */
    public void testKeysOfDifferentClasses() {
        PaintMap m = new PaintMap();
        m.put("ABC", Color.red);
        m.put(new Integer(99), Color.blue);
        assertEquals(Color.blue, m.getPaint(new Integer(99)));
    }

}