xytaskdatasettests.java

JFreeChart它主要是用来制作各种各样的图表

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.]
 *
 * -----------------------
 * XYTaskDatasetTests.java
 * -----------------------
 * (C) Copyright 2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 16-Sep-2008 : Version 1 (DG);
 *
 */

package org.jfree.data.gantt.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 java.util.Date;

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

import org.jfree.data.gantt.Task;
import org.jfree.data.gantt.TaskSeries;
import org.jfree.data.gantt.TaskSeriesCollection;
import org.jfree.data.gantt.XYTaskDataset;

/**
 * Tests for the {@link XYTaskDataset} class.
 */
public class XYTaskDatasetTests extends TestCase {

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

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

    /**
     * Some checks for the equals() method.
     */
    public void testEquals() {
        TaskSeries s1 = new TaskSeries("Series");
        s1.add(new Task("Task 1", new Date(0L), new Date(1L)));
        s1.add(new Task("Task 2", new Date(10L), new Date(11L)));
        s1.add(new Task("Task 3", new Date(20L), new Date(21L)));
        TaskSeriesCollection u1 = new TaskSeriesCollection();
        u1.add(s1);
        XYTaskDataset d1 = new XYTaskDataset(u1);
        TaskSeries s2 = new TaskSeries("Series");
        s2.add(new Task("Task 1", new Date(0L), new Date(1L)));
        s2.add(new Task("Task 2", new Date(10L), new Date(11L)));
        s2.add(new Task("Task 3", new Date(20L), new Date(21L)));
        TaskSeriesCollection u2 = new TaskSeriesCollection();
        u2.add(s2);
        XYTaskDataset d2 = new XYTaskDataset(u2);
        assertTrue(d1.equals(d2));

        d1.setSeriesWidth(0.123);
        assertFalse(d1.equals(d2));
        d2.setSeriesWidth(0.123);
        assertTrue(d1.equals(d2));

        d1.setTransposed(true);
        assertFalse(d1.equals(d2));
        d2.setTransposed(true);
        assertTrue(d1.equals(d2));

        s1.add(new Task("Task 2", new Date(10L), new Date(11L)));
        assertFalse(d1.equals(d2));
        s2.add(new Task("Task 2", new Date(10L), new Date(11L)));
        assertTrue(d1.equals(d2));
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        TaskSeries s1 = new TaskSeries("Series");
        s1.add(new Task("Task 1", new Date(0L), new Date(1L)));
        TaskSeriesCollection u1 = new TaskSeriesCollection();
        u1.add(s1);
        XYTaskDataset d1 = new XYTaskDataset(u1);
        XYTaskDataset d2 = null;
        try {
            d2 = (XYTaskDataset) d1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(d1 != d2);
        assertTrue(d1.getClass() == d2.getClass());
        assertTrue(d1.equals(d2));

        // basic check for independence
        s1.add(new Task("Task 2", new Date(10L), new Date(11L)));
        assertFalse(d1.equals(d2));
        TaskSeriesCollection u2 = d2.getTasks();
        TaskSeries s2 = u2.getSeries("Series");
        s2.add(new Task("Task 2", new Date(10L), new Date(11L)));
        assertTrue(d1.equals(d2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        TaskSeries s1 = new TaskSeries("Series");
        s1.add(new Task("Task 1", new Date(0L), new Date(1L)));
        TaskSeriesCollection u1 = new TaskSeriesCollection();
        u1.add(s1);
        XYTaskDataset d1 = new XYTaskDataset(u1);
        XYTaskDataset d2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(d1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            d2 = (XYTaskDataset) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(d1, d2);

        // basic check for independence
        s1.add(new Task("Task 2", new Date(10L), new Date(11L)));
        assertFalse(d1.equals(d2));
        TaskSeriesCollection u2 = d2.getTasks();
        TaskSeries s2 = u2.getSeries("Series");
        s2.add(new Task("Task 2", new Date(10L), new Date(11L)));
        assertTrue(d1.equals(d2));
    }

}