xyseriescollectiontests.java

用于制作报表的中间件控件,纯java编写,还附带有数据库操作的源代码

/* ===========================================================
 * 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.]
 *
 * ----------------------------
 * XYSeriesCollectionTests.java
 * ----------------------------
 * (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 18-May-2003 : Version 1 (DG);
 * 27-Nov-2006 : Updated testCloning() (DG);
 * 08-Mar-2007 : Added testGetSeries() and testRemoveSeries() (DG);
 * 08-May-2007 : Added testIndexOf() (DG);
 *
 */

package org.jfree.data.xy.junit;

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.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

/**
 * Tests for the {@link XYSeriesCollection} class.
 */
public class XYSeriesCollectionTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.0, 1.1);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        XYSeries s2 = new XYSeries("Series");
        s2.add(1.0, 1.1);
        XYSeriesCollection c2 = new XYSeriesCollection();
        c2.addSeries(s2);
        assertTrue(c1.equals(c2));
        assertTrue(c2.equals(c1));

        c1.addSeries(new XYSeries("Empty Series"));
        assertFalse(c1.equals(c2));

        c2.addSeries(new XYSeries("Empty Series"));
        assertTrue(c1.equals(c2));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.0, 1.1);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        XYSeriesCollection c2 = null;
        try {
            c2 = (XYSeriesCollection) c1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(c1 != c2);
        assertTrue(c1.getClass() == c2.getClass());
        assertTrue(c1.equals(c2));
        
        // check independence
        s1.setDescription("XYZ");
        assertFalse(c1.equals(c2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        XYSeries s1 = new XYSeries("Series");
        s1.add(1.0, 1.1);
        XYSeriesCollection c1 = new XYSeriesCollection();
        c1.addSeries(s1);
        XYSeriesCollection c2 = null;
        
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(c1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            c2 = (XYSeriesCollection) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(c1, c2);
    }
    
    /**
     * A test for bug report 1170825.
     */
    public void test1170825() {
        XYSeries s1 = new XYSeries("Series1");
        XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(s1);
        try {
            /* XYSeries s = */ dataset.getSeries(1);
        }
        catch (IllegalArgumentException e) {
            // correct outcome
        }
        catch (IndexOutOfBoundsException e) {
            assertTrue(false);  // wrong outcome
        }
    }
    
    /**
     * Some basic checks for the getSeries() method.
     */
    public void testGetSeries() {
        XYSeriesCollection c = new XYSeriesCollection();
        XYSeries s1 = new XYSeries("s1");
        c.addSeries(s1);
        assertEquals("s1", c.getSeries(0).getKey());
        
        boolean pass = false;
        try {
            c.getSeries(-1);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
        
        pass = false;
        try {
            c.getSeries(1);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }
    
    /**
     * Some basic checks for the removeSeries() method.
     */
    public void testRemoveSeries() {
        XYSeriesCollection c = new XYSeriesCollection();
        XYSeries s1 = new XYSeries("s1");
        c.addSeries(s1);
        c.removeSeries(0);
        assertEquals(0, c.getSeriesCount());
        c.addSeries(s1);
        
        boolean pass = false;
        try {
            c.removeSeries(-1);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
        
        pass = false;
        try {
            c.removeSeries(1);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }
    
    /**
     * Some tests for the indexOf() method.
     */
    public void testIndexOf() {
        XYSeries s1 = new XYSeries("S1");
        XYSeries s2 = new XYSeries("S2");
        XYSeriesCollection dataset = new XYSeriesCollection();
        assertEquals(-1, dataset.indexOf(s1));
        assertEquals(-1, dataset.indexOf(s2));
        
        dataset.addSeries(s1);
        assertEquals(0, dataset.indexOf(s1));
        assertEquals(-1, dataset.indexOf(s2));
        
        dataset.addSeries(s2);
        assertEquals(0, dataset.indexOf(s1));
        assertEquals(1, dataset.indexOf(s2));
        
        dataset.removeSeries(s1);
        assertEquals(-1, dataset.indexOf(s1));
        assertEquals(0, dataset.indexOf(s2));
        
        XYSeries s2b = new XYSeries("S2");
        assertEquals(0, dataset.indexOf(s2b));
    }

}