jfreecharttests.java

jfreechart安装程序和使用说明

/* ===========================================================
 * 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.]
 *
 * --------------------
 * JFreeChartTests.java
 * --------------------
 * (C) Copyright 2002-2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: JFreeChartTests.java,v 1.1 2004/08/31 14:35:34 mungady Exp $
 *
 * Changes:
 * --------
 * 11-Jun-2002 : Version 1 (DG);
 * 17-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 23-Sep-2003 : Removed null title test, since TM has added code to ensure null titles 
 *               cannot be created (DG);
 *
 */

package org.jfree.chart.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.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.time.Day;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;

/**
 * Tests for the {@link JFreeChart} class.
 *
 */
public class JFreeChartTests extends TestCase {

    /** A pie chart. */
    private JFreeChart pieChart;

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

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

    /**
     * Common test setup.
     */
    protected void setUp() {

        // create a dataset...
        DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("Java", new Double(43.2));
        data.setValue("Visual Basic", new Double(0.0));
        data.setValue("C/C++", new Double(17.5));

        // create the chart...
        this.pieChart = ChartFactory.createPieChart(
            "Pie Chart",  // chart title
            data,         // data
            true,         // include legend
            true,
            false
        );

    }

    /**
     * Checks the subtitle count - should be 0.
     */
    public void testSubtitleCount() {

        int count = this.pieChart.getSubtitleCount();
        assertEquals(count, 0);

    }
    
    /**
     * Serialize a pie chart, restore it, and check for equality.
     */
    public void testSerialization1() {

        DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("Type 1", 54.5);
        data.setValue("Type 2", 23.9);
        data.setValue("Type 3", 45.8);

        JFreeChart c1 = ChartFactory.createPieChart("Test", data, true, true, true);
        JFreeChart 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 = (JFreeChart) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(c1, c2);

    }

    /**
     * Serialize a 3D pie chart, restore it, and check for equality.
     */
    public void testSerialization2() {

        DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("Type 1", 54.5);
        data.setValue("Type 2", 23.9);
        data.setValue("Type 3", 45.8);

        JFreeChart c1 = ChartFactory.createPieChart3D("Test", data, true, true, true);
        JFreeChart 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 = (JFreeChart) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(c1, c2);

    }

    /**
     * Serialize a bar chart, restore it, and check for equality.
     */
    public void testSerialization3() {

        // row keys...
        String series1 = "First";
        String series2 = "Second";
        String series3 = "Third";

        // column keys...
        String category1 = "Category 1";
        String category2 = "Category 2";
        String category3 = "Category 3";
        String category4 = "Category 4";
        String category5 = "Category 5";
        String category6 = "Category 6";
        String category7 = "Category 7";
        String category8 = "Category 8";

        // create the dataset...
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        dataset.addValue(1.0, series1, category1);
        dataset.addValue(4.0, series1, category2);
        dataset.addValue(3.0, series1, category3);
        dataset.addValue(5.0, series1, category4);
        dataset.addValue(5.0, series1, category5);
        dataset.addValue(7.0, series1, category6);
        dataset.addValue(7.0, series1, category7);
        dataset.addValue(8.0, series1, category8);

        dataset.addValue(5.0, series2, category1);
        dataset.addValue(7.0, series2, category2);
        dataset.addValue(6.0, series2, category3);
        dataset.addValue(8.0, series2, category4);
        dataset.addValue(4.0, series2, category5);
        dataset.addValue(4.0, series2, category6);
        dataset.addValue(2.0, series2, category7);
        dataset.addValue(1.0, series2, category8);

        dataset.addValue(4.0, series3, category1);
        dataset.addValue(3.0, series3, category2);
        dataset.addValue(2.0, series3, category3);
        dataset.addValue(3.0, series3, category4);
        dataset.addValue(6.0, series3, category5);
        dataset.addValue(3.0, series3, category6);
        dataset.addValue(4.0, series3, category7);
        dataset.addValue(3.0, series3, category8);

        // create the chart...
        JFreeChart c1 = ChartFactory.createBarChart(
            "Vertical Bar Chart",      // chart title
            "Category",                // domain axis label
            "Value",                   // range axis label
            dataset,                   // data
            PlotOrientation.VERTICAL,  // orientation
            true,                      // include legend
            true,
            false
        );

        JFreeChart 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 = (JFreeChart) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(c1, c2);

    }
    
    /**
     * Serialize a time seroes chart, restore it, and check for equality.
     */
    public void testSerialization4() {

        RegularTimePeriod t = new Day();
        TimeSeries series = new TimeSeries("Series 1");
        series.add(t, 36.4);
        t = t.next();
        series.add(t, 63.5);
        TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.addSeries(series);

        JFreeChart c1 = ChartFactory.createTimeSeriesChart(
            "Test", "Date", "Value", dataset, true, true, true
        );
        JFreeChart 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 = (JFreeChart) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(c1, c2);

    }


}