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jfreechart example source code file (ChartPanelTests.java)

This example jfreechart source code file (ChartPanelTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, chartpanel, chartpanel, chartpaneltests, defaultxydataset, defaultxydataset, event, geometry, gui, jfreechart, jfreechart, numberaxis, swing, testchart, util, x, x2, xyplot, xyplot, y

The jfreechart ChartPanelTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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.]
 *
 * --------------------
 * ChartPanelTests.java
 * --------------------
 * (C) Copyright 2004-2009, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 13-Jul-2004 : Version 1 (DG);
 * 12-Jan-2009 : Added test2502355() (DG);
 *
 */

package org.jfree.chart.junit;

import java.awt.geom.Rectangle2D;
import java.util.EventListener;
import java.util.List;

import javax.swing.event.CaretListener;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartMouseEvent;
import org.jfree.chart.ChartMouseListener;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.xy.DefaultXYDataset;

/**
 * Tests for the {@link ChartPanel} class.
 */
public class ChartPanelTests extends TestCase
        implements ChartChangeListener, ChartMouseListener {

    private List chartChangeEvents = new java.util.ArrayList();

    /**
     * Receives a chart change event and stores it in a list for later
     * inspection.
     *
     * @param event  the event.
     */
    public void chartChanged(ChartChangeEvent event) {
        this.chartChangeEvents.add(event);
    }

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

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

    /**
     * Test that the constructor will accept a null chart.
     */
    public void testConstructor1() {
        ChartPanel panel = new ChartPanel(null);
        assertEquals(null, panel.getChart());
    }

    /**
     * Test that it is possible to set the panel's chart to null.
     */
    public void testSetChart() {
        JFreeChart chart = new JFreeChart(new XYPlot());
        ChartPanel panel = new ChartPanel(chart);
        panel.setChart(null);
        assertEquals(null, panel.getChart());
    }

    /**
     * Check the behaviour of the getListeners() method.
     */
    public void testGetListeners() {
        ChartPanel p = new ChartPanel(null);
        p.addChartMouseListener(this);
        EventListener[] listeners = p.getListeners(ChartMouseListener.class);
        assertEquals(1, listeners.length);
        assertEquals(this, listeners[0]);
        // try a listener type that isn't registered
        listeners = p.getListeners(CaretListener.class);
        assertEquals(0, listeners.length);
        p.removeChartMouseListener(this);
        listeners = p.getListeners(ChartMouseListener.class);
        assertEquals(0, listeners.length);

        // try a null argument
        boolean pass = false;
        try {
            listeners = p.getListeners((Class) null);
        }
        catch (NullPointerException e) {
            pass = true;
        }
        assertTrue(pass);

        // try a class that isn't a listener
        pass = false;
        try {
            listeners = p.getListeners(Integer.class);
        }
        catch (ClassCastException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Ignores a mouse click event.
     *
     * @param event  the event.
     */
    public void chartMouseClicked(ChartMouseEvent event) {
        // ignore
    }

    /**
     * Ignores a mouse move event.
     *
     * @param event  the event.
     */
    public void chartMouseMoved(ChartMouseEvent event) {
        // ignore
    }

    /**
     * Checks that a call to the zoom() method generates just one
     * ChartChangeEvent.
     */
    public void test2502355_zoom() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoom(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the zoomInBoth() method generates just one
     * ChartChangeEvent.
     */
    public void test2502355_zoomInBoth() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoomInBoth(1.0, 2.0);
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the zoomOutBoth() method generates just one
     * ChartChangeEvent.
     */
    public void test2502355_zoomOutBoth() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoomOutBoth(1.0, 2.0);
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the restoreAutoBounds() method generates just one
     * ChartChangeEvent.
     */
    public void test2502355_restoreAutoBounds() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.restoreAutoBounds();
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the zoomInDomain() method, for a plot with more
     * than one domain axis, generates just one ChartChangeEvent.
     */
    public void test2502355_zoomInDomain() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setDomainAxis(1, new NumberAxis("X2"));
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoomInDomain(1.0, 2.0);
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the zoomInRange() method, for a plot with more
     * than one range axis, generates just one ChartChangeEvent.
     */
    public void test2502355_zoomInRange() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setRangeAxis(1, new NumberAxis("X2"));
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoomInRange(1.0, 2.0);
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the zoomOutDomain() method, for a plot with more
     * than one domain axis, generates just one ChartChangeEvent.
     */
    public void test2502355_zoomOutDomain() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setDomainAxis(1, new NumberAxis("X2"));
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoomOutDomain(1.0, 2.0);
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the zoomOutRange() method, for a plot with more
     * than one range axis, generates just one ChartChangeEvent.
     */
    public void test2502355_zoomOutRange() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setRangeAxis(1, new NumberAxis("X2"));
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.zoomOutRange(1.0, 2.0);
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the restoreAutoDomainBounds() method, for a plot
     * with more than one range axis, generates just one ChartChangeEvent.
     */
    public void test2502355_restoreAutoDomainBounds() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setDomainAxis(1, new NumberAxis("X2"));
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.restoreAutoDomainBounds();
        assertEquals(1, this.chartChangeEvents.size());
    }

    /**
     * Checks that a call to the restoreAutoRangeBounds() method, for a plot
     * with more than one range axis, generates just one ChartChangeEvent.
     */
    public void test2502355_restoreAutoRangeBounds() {
        DefaultXYDataset dataset = new DefaultXYDataset();
        JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                "Y", dataset, PlotOrientation.VERTICAL, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setRangeAxis(1, new NumberAxis("X2"));
        ChartPanel panel = new ChartPanel(chart);
        chart.addChangeListener(this);
        this.chartChangeEvents.clear();
        panel.restoreAutoRangeBounds();
        assertEquals(1, this.chartChangeEvents.size());
    }

}

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