plotrenderinginfotests.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.]
 *
 * ---------------------------
 * PlotRenderingInfoTests.java
 * ---------------------------
 * (C) Copyright 2004-2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 20-May-2004 : Version 1 (DG);
 *
 */

package org.jfree.chart.plot.junit;

import java.awt.Rectangle;
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 junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.plot.PlotRenderingInfo;

/**
 * Tests for the {@link PlotRenderingInfo} class.
 */
public class PlotRenderingInfoTests extends TestCase {

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

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

    /**
     * Test the equals() method.
     */
    public void testEquals() {       
        PlotRenderingInfo p1 = new PlotRenderingInfo(new ChartRenderingInfo());
        PlotRenderingInfo p2 = new PlotRenderingInfo(new ChartRenderingInfo());
        assertTrue(p1.equals(p2));
        assertTrue(p2.equals(p1));
        
        p1.setPlotArea(new Rectangle(2, 3, 4, 5));
        assertFalse(p1.equals(p2));
        p2.setPlotArea(new Rectangle(2, 3, 4, 5));
        assertTrue(p1.equals(p2));
        
        p1.setDataArea(new Rectangle(2, 4, 6, 8));
        assertFalse(p1.equals(p2));
        p2.setDataArea(new Rectangle(2, 4, 6, 8));
        assertTrue(p1.equals(p2));

        p1.addSubplotInfo(new PlotRenderingInfo(null));
        assertFalse(p1.equals(p2));
        p2.addSubplotInfo(new PlotRenderingInfo(null));
        assertTrue(p1.equals(p2));
        
        p1.getSubplotInfo(0).setDataArea(new Rectangle(1, 2, 3, 4));
        assertFalse(p1.equals(p2));
        p2.getSubplotInfo(0).setDataArea(new Rectangle(1, 2, 3, 4));
        assertTrue(p1.equals(p2));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        PlotRenderingInfo p1 = new PlotRenderingInfo(new ChartRenderingInfo());
        p1.setPlotArea(new Rectangle2D.Double());
        PlotRenderingInfo p2 = null;
        try {
            p2 = (PlotRenderingInfo) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // check independence
        p1.getPlotArea().setRect(1.0, 2.0, 3.0, 4.0);
        assertFalse(p1.equals(p2));
        p2.getPlotArea().setRect(1.0, 2.0, 3.0, 4.0);
        assertTrue(p1.equals(p2));
        
        p1.getDataArea().setRect(4.0, 3.0, 2.0, 1.0);
        assertFalse(p1.equals(p2));
        p2.getDataArea().setRect(4.0, 3.0, 2.0, 1.0);
        assertTrue(p1.equals(p2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        PlotRenderingInfo p1 = new PlotRenderingInfo(new ChartRenderingInfo());
        PlotRenderingInfo p2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(p1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            p2 = (PlotRenderingInfo) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertEquals(p1, p2);

    }

}