standardxyitemrenderertests.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.]
 *
 * --------------------------------
 * StandardXYItemRendererTests.java
 * --------------------------------
 * (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 25-Mar-2003 : Version 1 (DG);
 * 22-Oct-2003 : Added hashCode test (DG);
 * 08-Oct-2004 : Strengthened test for equals() method (DG);
 * 14-Mar-2007 : Added new checks in testEquals() and testCloning() (DG);
 * 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
 * 08-Jun-2007 : Added testNoDisplayedItem() (DG);
 * 
 */

package org.jfree.chart.renderer.xy.junit;

import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
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.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.entity.XYItemEntity;
import org.jfree.chart.junit.TestUtilities;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.util.UnitType;

/**
 * Tests for the {@link StandardXYItemRenderer} class.
 */
public class StandardXYItemRendererTests extends TestCase {

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

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

    /**
     * Test that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        StandardXYItemRenderer r1 = new StandardXYItemRenderer();
        StandardXYItemRenderer r2 = new StandardXYItemRenderer();
        assertEquals(r1, r2);
        
        r1.setBaseShapesVisible(true);
        assertFalse(r1.equals(r2));
        r2.setBaseShapesVisible(true);
        assertTrue(r1.equals(r2));
        
        r1.setPlotLines(false);
        assertFalse(r1.equals(r2));
        r2.setPlotLines(false);
        assertTrue(r1.equals(r2));

        r1.setPlotImages(true);
        assertFalse(r1.equals(r2));
        r2.setPlotImages(true);
        assertTrue(r1.equals(r2));

        r1.setPlotDiscontinuous(true);
        assertFalse(r1.equals(r2));
        r2.setPlotDiscontinuous(true);
        assertTrue(r1.equals(r2));
        
        r1.setGapThresholdType(UnitType.ABSOLUTE);
        assertFalse(r1.equals(r2));
        r2.setGapThresholdType(UnitType.ABSOLUTE);
        assertTrue(r1.equals(r2));
        
        r1.setGapThreshold(1.23);
        assertFalse(r1.equals(r2));
        r2.setGapThreshold(1.23);
        assertTrue(r1.equals(r2));
        
        r1.setLegendLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
        assertFalse(r1.equals(r2));
        r2.setLegendLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
        assertTrue(r1.equals(r2));

        r1.setShapesFilled(false);
        assertFalse(r1.equals(r2));
        r2.setShapesFilled(false);
        assertTrue(r1.equals(r2));
        
        r1.setSeriesShapesFilled(1, Boolean.TRUE);
        assertFalse(r1.equals(r2));
        r2.setSeriesShapesFilled(1, Boolean.TRUE);
        assertTrue(r1.equals(r2));
        
        r1.setBaseShapesFilled(false);
        assertFalse(r1.equals(r2));
        r2.setBaseShapesFilled(false);
        assertTrue(r1.equals(r2));
        
        r1.setDrawSeriesLineAsPath(true);
        assertFalse(r1.equals(r2));
        r2.setDrawSeriesLineAsPath(true);
        assertTrue(r1.equals(r2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode. 
     */
    public void testHashcode() {
        StandardXYItemRenderer r1 = new StandardXYItemRenderer();
        StandardXYItemRenderer r2 = new StandardXYItemRenderer();
        assertTrue(r1.equals(r2));
        int h1 = r1.hashCode();
        int h2 = r2.hashCode();
        assertEquals(h1, h2);
    }
    
    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        StandardXYItemRenderer r1 = new StandardXYItemRenderer();
        Rectangle2D rect1 = new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0);
        r1.setLegendLine(rect1);
        StandardXYItemRenderer r2 = null;
        try {
            r2 = (StandardXYItemRenderer) r1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));
        
        // check independence
        rect1.setRect(4.0, 3.0, 2.0, 1.0);
        assertFalse(r1.equals(r2));
        r2.setLegendLine(new Rectangle2D.Double(4.0, 3.0, 2.0, 1.0));
        assertTrue(r1.equals(r2));
        
        r1.setSeriesShapesFilled(1, Boolean.TRUE);
        assertFalse(r1.equals(r2));
        r2.setSeriesShapesFilled(1, Boolean.TRUE);
        assertTrue(r1.equals(r2));
        
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        StandardXYItemRenderer r1 = new StandardXYItemRenderer();
        StandardXYItemRenderer r2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(r1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            r2 = (StandardXYItemRenderer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(r1, r2);
    }
    
    /**
     * A check for the datasetIndex and seriesIndex fields in the LegendItem
     * returned by the getLegendItem() method.
     */
    public void testGetLegendItemSeriesIndex() {
        XYSeriesCollection d1 = new XYSeriesCollection();
        XYSeries s1 = new XYSeries("S1");
        s1.add(1.0, 1.1);
        XYSeries s2 = new XYSeries("S2");
        s2.add(1.0, 1.1);
        d1.addSeries(s1);
        d1.addSeries(s2);
        
        XYSeriesCollection d2 = new XYSeriesCollection();
        XYSeries s3 = new XYSeries("S3");
        s3.add(1.0, 1.1);
        XYSeries s4 = new XYSeries("S4");
        s4.add(1.0, 1.1);
        XYSeries s5 = new XYSeries("S5");
        s5.add(1.0, 1.1);
        d2.addSeries(s3);
        d2.addSeries(s4);
        d2.addSeries(s5);

        StandardXYItemRenderer r = new StandardXYItemRenderer();
        XYPlot plot = new XYPlot(d1, new NumberAxis("x"),
                new NumberAxis("y"), r);
        plot.setDataset(1, d2);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(1, 2);
        assertEquals("S5", li.getLabel());
        assertEquals(1, li.getDatasetIndex());
        assertEquals(2, li.getSeriesIndex());
    }

    /**
     * A check to ensure that an item that falls outside the plot's data area
     * does NOT generate an item entity.
     */
    public void testNoDisplayedItem() {
        XYSeriesCollection dataset = new XYSeriesCollection();
        XYSeries s1 = new XYSeries("S1");
        s1.add(10.0, 10.0);
        dataset.addSeries(s1);
        JFreeChart chart = ChartFactory.createXYLineChart("Title", "X", "Y", 
                dataset, PlotOrientation.VERTICAL, false, true, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setRenderer(new StandardXYItemRenderer());
        NumberAxis xAxis = (NumberAxis) plot.getDomainAxis();
        xAxis.setRange(0.0, 5.0);
        NumberAxis yAxis = (NumberAxis) plot.getRangeAxis();
        yAxis.setRange(0.0, 5.0);
        BufferedImage image = new BufferedImage(200 , 100, 
                BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = image.createGraphics();
        ChartRenderingInfo info = new ChartRenderingInfo();
        chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, info);
        g2.dispose();
        EntityCollection ec = info.getEntityCollection();
        assertFalse(TestUtilities.containsInstanceOf(ec.getEntities(), 
                XYItemEntity.class));
    }
    
}