praktikum-holons/jars/jfreechart-1.0.19/tests/org/jfree/chart/plot/dial/StandardDialScaleTest.java

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2013, 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.
 *
 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
 * Other names may be trademarks of their respective owners.]
 *
 * --------------------------
 * StandardDialScaleTest.java
 * --------------------------
 * (C) Copyright 2006-2013, 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);
 * 08-Jan-2012 : Added tests for valueToAngle() and angleToValue();
 *
 */

package org.jfree.chart.plot.dial;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;

import org.jfree.chart.TestUtilities;
import org.junit.Test;

/**
 * Tests for the {@link StandardDialScale} class.
 */
public class StandardDialScaleTest {

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    @Test
    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.
     */
    @Test
    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.
     */
    @Test
    public void testCloning() throws CloneNotSupportedException {
        // try a default instance
        StandardDialScale s1 = new StandardDialScale();
        StandardDialScale s2 = (StandardDialScale) s1.clone();
        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 = (StandardDialScale) s1.clone();
        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.
     */
    @Test
    public void testSerialization() {
        // try a default instance
        StandardDialScale s1 = new StandardDialScale();
        StandardDialScale s2 = (StandardDialScale) TestUtilities.serialised(s1);
        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 = (StandardDialScale) TestUtilities.serialised(s1);
        assertEquals(s1, s2);
    }

    private static final double EPSILON = 0.0000000001;

    /**
     * Some checks for the valueToAngle() method.
     */
    @Test
    public void testValueToAngle() {
        StandardDialScale s = new StandardDialScale();
        assertEquals(175.0, s.valueToAngle(0.0), EPSILON);
        assertEquals(90.0, s.valueToAngle(50.0), EPSILON);
        assertEquals(5.0, s.valueToAngle(100.0), EPSILON);
        assertEquals(192.0, s.valueToAngle(-10.0), EPSILON);
        assertEquals(-12.0, s.valueToAngle(110.0), EPSILON);

        s = new StandardDialScale(0, 20, 180, -180.0, 10, 3);
        assertEquals(180.0, s.valueToAngle(0.0), EPSILON);
        assertEquals(90.0, s.valueToAngle(10.0), EPSILON);
        assertEquals(0.0, s.valueToAngle(20.0), EPSILON);
    }

    /**
     * Some checks for the angleToValue() method.
     */
    @Test
    public void testAngleToValue() {
        StandardDialScale s = new StandardDialScale();
        assertEquals(0.0, s.angleToValue(175.0), EPSILON);
        assertEquals(50.0, s.angleToValue(90.0), EPSILON);
        assertEquals(100.0, s.angleToValue(5.0), EPSILON);
        assertEquals(-10.0, s.angleToValue(192.0), EPSILON);
        assertEquals(110.0, s.angleToValue(-12.0), EPSILON);

        s = new StandardDialScale(0, 20, 180, -180.0, 10, 3);
        assertEquals(0.0, s.angleToValue(180.0), EPSILON);
        assertEquals(10.0, s.angleToValue(90.0), EPSILON);
        assertEquals(20.0, s.angleToValue(0.0), EPSILON);
    }
}