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jfreechart example source code file (MarkerTests.java)

This example jfreechart source code file (MarkerTests.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, categoryplot, epsilon, eventlistener, eventlistener, expected, expected, font, illegalargumentexception, illegalargumentexception, rectangleinsets, sansserif, util, valuemarker, valuemarker, xyplot

The jfreechart MarkerTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2007, 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.]
 *
 * ----------------
 * MarkerTests.java
 * ----------------
 * (C) Copyright 2006, 2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 05-Sep-2006 : Version 1 (DG);
 *
 */

package org.jfree.chart.plot.junit;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.util.Arrays;
import java.util.EventListener;

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

import org.jfree.chart.event.MarkerChangeEvent;
import org.jfree.chart.event.MarkerChangeListener;
import org.jfree.chart.plot.CategoryMarker;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.Marker;
import org.jfree.chart.plot.ValueMarker;
import org.jfree.chart.plot.XYPlot;
import org.jfree.ui.LengthAdjustmentType;
import org.jfree.ui.RectangleAnchor;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.TextAnchor;

/**
 * Tests for the {@link Marker} class.
 */
public class MarkerTests extends TestCase implements MarkerChangeListener {

    MarkerChangeEvent lastEvent;

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

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

    /**
     * Some checks for the getPaint() and setPaint() methods.
     */
    public void testGetSetPaint() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(Color.gray, m.getPaint());
        m.setPaint(Color.blue);
        assertEquals(Color.blue, m.getPaint());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setPaint(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getStroke() and setStroke() methods.
     */
    public void testGetSetStroke() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(new BasicStroke(0.5f), m.getStroke());
        m.setStroke(new BasicStroke(1.1f));
        assertEquals(new BasicStroke(1.1f), m.getStroke());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setStroke(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getOutlinePaint() and setOutlinePaint() methods.
     */
    public void testGetSetOutlinePaint() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(Color.gray, m.getOutlinePaint());
        m.setOutlinePaint(Color.yellow);
        assertEquals(Color.yellow, m.getOutlinePaint());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        m.setOutlinePaint(null);
        assertEquals(null, m.getOutlinePaint());
    }

    /**
     * Some checks for the getOutlineStroke() and setOutlineStroke() methods.
     */
    public void testGetSetOutlineStroke() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(new BasicStroke(0.5f), m.getOutlineStroke());
        m.setOutlineStroke(new BasicStroke(1.1f));
        assertEquals(new BasicStroke(1.1f), m.getOutlineStroke());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        m.setOutlineStroke(null);
        assertEquals(null, m.getOutlineStroke());
    }

    private static final float EPSILON = 0.000000001f;

    /**
     * Some checks for the getAlpha() and setAlpha() methods.
     */
    public void testGetSetAlpha() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(0.8f, m.getAlpha(), EPSILON);
        m.setAlpha(0.5f);
        assertEquals(0.5f, m.getAlpha(), EPSILON);
        assertEquals(m, this.lastEvent.getMarker());
    }

    /**
     * Some checks for the getLabel() and setLabel() methods.
     */
    public void testGetSetLabel() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(null, m.getLabel());
        m.setLabel("XYZ");
        assertEquals("XYZ", m.getLabel());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        m.setLabel(null);
        assertEquals(null, m.getLabel());
    }

    /**
     * Some checks for the getLabelFont() and setLabelFont() methods.
     */
    public void testGetSetLabelFont() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(new Font("SansSerif", Font.PLAIN, 9), m.getLabelFont());
        m.setLabelFont(new Font("SansSerif", Font.BOLD, 10));
        assertEquals(new Font("SansSerif", Font.BOLD, 10), m.getLabelFont());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setLabelFont(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getLabelPaint() and setLabelPaint() methods.
     */
    public void testGetSetLabelPaint() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(Color.black, m.getLabelPaint());
        m.setLabelPaint(Color.red);
        assertEquals(Color.red, m.getLabelPaint());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setLabelPaint(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getLabelAnchor() and setLabelAnchor() methods.
     */
    public void testGetSetLabelAnchor() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(RectangleAnchor.TOP_LEFT, m.getLabelAnchor());
        m.setLabelAnchor(RectangleAnchor.TOP);
        assertEquals(RectangleAnchor.TOP, m.getLabelAnchor());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setLabelAnchor(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getLabelOffset() and setLabelOffset() methods.
     */
    public void testGetSetLabelOffset() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(new RectangleInsets(3, 3, 3, 3), m.getLabelOffset());
        m.setLabelOffset(new RectangleInsets(1, 2, 3, 4));
        assertEquals(new RectangleInsets(1, 2, 3, 4), m.getLabelOffset());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setLabelOffset(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getLabelOffsetType() and setLabelOffsetType()
     * methods.
     */
    public void testGetSetLabelOffsetType() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(LengthAdjustmentType.CONTRACT, m.getLabelOffsetType());
        m.setLabelOffsetType(LengthAdjustmentType.EXPAND);
        assertEquals(LengthAdjustmentType.EXPAND, m.getLabelOffsetType());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setLabelOffsetType(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Some checks for the getLabelTextAnchor() and setLabelTextAnchor()
     * methods.
     */
    public void testGetSetLabelTextAnchor() {
        // we use ValueMarker for the tests, because we need a concrete
        // subclass...
        ValueMarker m = new ValueMarker(1.1);
        m.addChangeListener(this);
        this.lastEvent = null;
        assertEquals(TextAnchor.CENTER, m.getLabelTextAnchor());
        m.setLabelTextAnchor(TextAnchor.BASELINE_LEFT);
        assertEquals(TextAnchor.BASELINE_LEFT, m.getLabelTextAnchor());
        assertEquals(m, this.lastEvent.getMarker());

        // check null argument...
        try {
            m.setLabelTextAnchor(null);
            fail("Expected an IllegalArgumentException for null.");
        }
        catch (IllegalArgumentException e) {
            assertTrue(true);
        }
    }

    /**
     * Checks that a CategoryPlot deregisters listeners when clearing markers.
     */
    public void testListenersWithCategoryPlot() {
        CategoryPlot plot = new CategoryPlot();
        CategoryMarker marker1 = new CategoryMarker("X");
        ValueMarker marker2 = new ValueMarker(1.0);
        plot.addDomainMarker(marker1);
        plot.addRangeMarker(marker2);
        EventListener[] listeners1 = marker1.getListeners(
                MarkerChangeListener.class);
        assertTrue(Arrays.asList(listeners1).contains(plot));
        EventListener[] listeners2 = marker1.getListeners(
                MarkerChangeListener.class);
        assertTrue(Arrays.asList(listeners2).contains(plot));
        plot.clearDomainMarkers();
        plot.clearRangeMarkers();
        listeners1 = marker1.getListeners(MarkerChangeListener.class);
        assertFalse(Arrays.asList(listeners1).contains(plot));
        listeners2 = marker1.getListeners(MarkerChangeListener.class);
        assertFalse(Arrays.asList(listeners2).contains(plot));
    }

    /**
     * Checks that an XYPlot deregisters listeners when clearing markers.
     */
    public void testListenersWithXYPlot() {
        XYPlot plot = new XYPlot();
        ValueMarker marker1 = new ValueMarker(1.0);
        ValueMarker marker2 = new ValueMarker(2.0);
        plot.addDomainMarker(marker1);
        plot.addRangeMarker(marker2);
        EventListener[] listeners1 = marker1.getListeners(
                MarkerChangeListener.class);
        assertTrue(Arrays.asList(listeners1).contains(plot));
        EventListener[] listeners2 = marker1.getListeners(
                MarkerChangeListener.class);
        assertTrue(Arrays.asList(listeners2).contains(plot));
        plot.clearDomainMarkers();
        plot.clearRangeMarkers();
        listeners1 = marker1.getListeners(MarkerChangeListener.class);
        assertFalse(Arrays.asList(listeners1).contains(plot));
        listeners2 = marker1.getListeners(MarkerChangeListener.class);
        assertFalse(Arrays.asList(listeners2).contains(plot));
    }

    /**
     * Records the last event.
     *
     * @param event  the event.
     */
    public void markerChanged(MarkerChangeEvent event) {
        this.lastEvent = event;
    }

}

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