jfreechart example source code file (StandardDialScaleTests.java)

This example jfreechart source code file (StandardDialScaleTests.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, bytearrayoutputstream, bytearrayoutputstream, clonenotsupportedexception, clonenotsupportedexception, dialog, exception, font, io, mydiallayerchangelistener, mydiallayerchangelistener, objectinput, objectoutputstream, standarddialscale, standarddialscale, standarddialscaletests

The jfreechart StandardDialScaleTests.java source code

/* ===========================================================
 * 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.]
 *
 * -------------------------
 * SimpleDialScaleTests.java
 * -------------------------
 * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 03-Nov-2006 : Version 1 (DG);
 * 24-Oct-2007 : Updated for API changes (DG);
 *
 */

package org.jfree.chart.plot.dial.junit;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
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.plot.dial.StandardDialScale;

/**
 * Tests for the {@link StandardDialScale} class.
 */
public class StandardDialScaleTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        StandardDialScale s1 = new StandardDialScale();
        StandardDialScale s2 = new StandardDialScale();
        assertTrue(s1.equals(s2));

        // lowerBound
        s1 = new StandardDialScale(10.0, 100.0, 0.0, 270.0, 10.0, 4);
        assertFalse(s1.equals(s2));
        s2 = new StandardDialScale(10.0, 100.0, 0.0, 270.0, 10.0, 4);
        assertTrue(s1.equals(s2));

        // upperBound
        s1 = new StandardDialScale(10.0, 200.0, 0.0, 270.0, 10.0, 4);
        assertFalse(s1.equals(s2));
        s2 = new StandardDialScale(10.0, 200.0, 0.0, 270.0, 10.0, 4);
        assertTrue(s1.equals(s2));

        // startAngle
        s1 = new StandardDialScale(10.0, 200.0, 20.0, 270.0, 10.0, 4);
        assertFalse(s1.equals(s2));
        s2 = new StandardDialScale(10.0, 200.0, 20.0, 270.0, 10.0, 4);
        assertTrue(s1.equals(s2));

        // extent
        s1 = new StandardDialScale(10.0, 200.0, 20.0, 99.0, 10.0, 4);
        assertFalse(s1.equals(s2));
        s2 = new StandardDialScale(10.0, 200.0, 20.0, 99.0, 10.0, 4);
        assertTrue(s1.equals(s2));

        // tickRadius
        s1.setTickRadius(0.99);
        assertFalse(s1.equals(s2));
        s2.setTickRadius(0.99);
        assertTrue(s1.equals(s2));

        // majorTickIncrement
        s1.setMajorTickIncrement(11.1);
        assertFalse(s1.equals(s2));
        s2.setMajorTickIncrement(11.1);
        assertTrue(s1.equals(s2));

        // majorTickLength
        s1.setMajorTickLength(0.09);
        assertFalse(s1.equals(s2));
        s2.setMajorTickLength(0.09);
        assertTrue(s1.equals(s2));

        // majorTickPaint
        s1.setMajorTickPaint(new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.yellow));
        assertFalse(s1.equals(s2));
        s2.setMajorTickPaint(new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.yellow));
        assertTrue(s1.equals(s2));

        // majorTickStroke
        s1.setMajorTickStroke(new BasicStroke(1.1f));
        assertFalse(s1.equals(s2));
        s2.setMajorTickStroke(new BasicStroke(1.1f));
        assertTrue(s1.equals(s2));

        // minorTickCount
        s1.setMinorTickCount(7);
        assertFalse(s1.equals(s2));
        s2.setMinorTickCount(7);
        assertTrue(s1.equals(s2));

        // minorTickLength
        s1.setMinorTickLength(0.09);
        assertFalse(s1.equals(s2));
        s2.setMinorTickLength(0.09);
        assertTrue(s1.equals(s2));

        // tickLabelOffset
        s1.setTickLabelOffset(0.11);
        assertFalse(s1.equals(s2));
        s2.setTickLabelOffset(0.11);
        assertTrue(s1.equals(s2));

        // tickLabelFont
        s1.setTickLabelFont(new Font("Dialog", Font.PLAIN, 15));
        assertFalse(s1.equals(s2));
        s2.setTickLabelFont(new Font("Dialog", Font.PLAIN, 15));
        assertTrue(s1.equals(s2));

        // tickLabelPaint
        s1.setTickLabelPaint(new GradientPaint(1.0f, 2.0f, Color.white,
                3.0f, 4.0f, Color.green));
        assertFalse(s1.equals(s2));
        s2.setTickLabelPaint(new GradientPaint(1.0f, 2.0f, Color.white,
                3.0f, 4.0f, Color.green));
        assertTrue(s1.equals(s2));

        s1.setTickLabelsVisible(false);
        assertFalse(s1.equals(s2));
        s2.setTickLabelsVisible(false);
        assertTrue(s1.equals(s2));

        // check an inherited attribute
        s1.setVisible(false);
        assertFalse(s1.equals(s2));
        s2.setVisible(false);
        assertTrue(s1.equals(s2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        StandardDialScale s1 = new StandardDialScale();
        StandardDialScale s2 = new StandardDialScale();
        assertTrue(s1.equals(s2));
        int h1 = s1.hashCode();
        int h2 = s2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        // try a default instance
        StandardDialScale s1 = new StandardDialScale();
        StandardDialScale s2 = null;
        try {
            s2 = (StandardDialScale) s1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(s1 != s2);
        assertTrue(s1.getClass() == s2.getClass());
        assertTrue(s1.equals(s2));

        // try a customised instance
        s1 = new StandardDialScale();
        s1.setExtent(123.4);
        s1.setMajorTickPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f,
                4.0f, Color.white));
        s1.setMajorTickStroke(new BasicStroke(2.0f));
        s2 = null;
        try {
            s2 = (StandardDialScale) s1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(s1 != s2);
        assertTrue(s1.getClass() == s2.getClass());
        assertTrue(s1.equals(s2));

        // check that the listener lists are independent
        MyDialLayerChangeListener l1 = new MyDialLayerChangeListener();
        s1.addChangeListener(l1);
        assertTrue(s1.hasListener(l1));
        assertFalse(s2.hasListener(l1));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        // try a default instance
        StandardDialScale s1 = new StandardDialScale();
        StandardDialScale s2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(s1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            s2 = (StandardDialScale) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(s1, s2);

        // try a customised instance
        s1 = new StandardDialScale();
        s1.setExtent(123.4);
        s1.setMajorTickPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f,
                4.0f, Color.white));
        s1.setMajorTickStroke(new BasicStroke(2.0f));
        s2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(s1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray()));
            s2 = (StandardDialScale) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(s1, s2);
    }

}