/* ===========================================================
 
* JFreeChart : a free chart library for the Java(tm) platform
 
* ===========================================================
 
*
 
* (C) Copyright 2000-2016, 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.]
 
*
 
* -----------------------
 
* TextAnnotationTest.java
 
* -----------------------
 
* (C) Copyright 2003-2016, by Object Refinery Limited and Contributors.
 
*
 
* Original Author:
  
David Gilbert (for Object Refinery Limited);
 
* Contributor(s):
   
Martin Hoeller;
 
*
 
* Changes
 
* -------
 
* 19-Aug-2003 : Version 1 (DG);
 
* 07-Jan-2005 : Added testHashCode() method (DG);
 
* 28-Oct-2011 : Added testSetRotationAnchor() method for bug #3428870 (MH);
 
* 01-Jul-2013 : Added testChangeEvents() (DG);
 
*
 
*/

package org.jfree.chart.annotations;

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

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

import org.jfree.chart.event.AnnotationChangeEvent;
import org.jfree.chart.event.AnnotationChangeListener;
import org.jfree.chart.ui.TextAnchor;
import org.junit.Test;

/**
 
* Tests for the {@link TextAnnotation} class.
 
*/
public class TextAnnotationTest implements AnnotationChangeListener {

    
/**
     
* Confirm that the equals method can distinguish all the required fields.
     
*/

    
@Test
    
public void testEquals() {
        
TextAnnotation a1 = new CategoryTextAnnotation("Test", "Category", 1.0);
        
TextAnnotation a2 = new CategoryTextAnnotation("Test", "Category", 1.0);
        
assertTrue(a1.equals(a2));

        
// text
        
a1.setText("Text");
        
assertFalse(a1.equals(a2));
        
a2.setText("Text");
        
assertTrue(a1.equals(a2));

        
// font
        
a1.setFont(new Font("Serif", Font.BOLD, 18));
        
assertFalse(a1.equals(a2));
        
a2.setFont(new Font("Serif", Font.BOLD, 18));
        
assertTrue(a1.equals(a2));

        
// paint
        
a1.setPaint(new GradientPaint(1.0f, 2.0f, Color.RED,
                
3.0f, 4.0f, Color.pink));
        
assertFalse(a1.equals(a2));
        
a2.setPaint(new GradientPaint(1.0f, 2.0f, Color.RED,
                
3.0f, 4.0f, Color.pink));
        
assertTrue(a1.equals(a2));

        
// textAnchor
        
a1.setTextAnchor(TextAnchor.BOTTOM_LEFT);
        
assertFalse(a1.equals(a2));
        
a2.setTextAnchor(TextAnchor.BOTTOM_LEFT);
        
assertTrue(a1.equals(a2));

        
// rotationAnchor
        
a1.setRotationAnchor(TextAnchor.BOTTOM_LEFT);
        
assertFalse(a1.equals(a2));
        
a2.setRotationAnchor(TextAnchor.BOTTOM_LEFT);
        
assertTrue(a1.equals(a2));

        
// rotationAngle
        
a1.setRotationAngle(Math.PI);
        
assertFalse(a1.equals(a2));
        
a2.setRotationAngle(Math.PI);
        
assertTrue(a1.equals(a2));
    
}

    
/**
     
* Two objects that are equal are required to return the same hashCode.
     
*/

    
@Test
    
public void testHashCode() {
        
TextAnnotation a1 = new CategoryTextAnnotation("Test", "Category", 1.0);
        
TextAnnotation a2 = new CategoryTextAnnotation("Test", "Category", 1.0);
        
assertTrue(a1.equals(a2));
        
int h1 = a1.hashCode();
        
int h2 = a2.hashCode();
        
assertEquals(h1, h2);
    
}

    
/**
     
* Test null-argument (Bug #3428870).
     
*/
    
@Test
    
public void testSetRotationAnchor() {
        
TextAnnotation a = new CategoryTextAnnotation("Test", "Category", 1.0);
        
try {
            
a.setRotationAnchor(null);
            
fail("Should have thrown Exception.");
        
} catch (IllegalArgumentException e) {
            
// ok, exception is expected
        
}
    
}

    
/**
     
* Some tests to ensure that change events are generated as expected.
     
*/

    
@Test
    
public void testChangeEvents() {
        
TextAnnotation a = new CategoryTextAnnotation("Test", "A", 1.0);
        
a.addChangeListener(this);
        
this.lastEvent = null;
        
a.setText("B");
        
assertNotNull(this.lastEvent);
                
this.lastEvent = null;
        
a.setText("B");
        
assertNotNull(this.lastEvent);
        

        
this.lastEvent = null;
        
a.setFont(new Font("SansSerif", Font.PLAIN, 12));
        
assertNotNull(this.lastEvent);

        
this.lastEvent = null;
        
a.setPaint(Color.BLUE);
        
assertNotNull(this.lastEvent);
        

        
this.lastEvent = null;
        
a.setTextAnchor(TextAnchor.CENTER_LEFT);
        
assertNotNull(this.lastEvent);
        

        
this.lastEvent = null;
        
a.setRotationAnchor(TextAnchor.CENTER_LEFT);
        
assertNotNull(this.lastEvent);

        
this.lastEvent = null;
        
a.setRotationAngle(123.4);
        
assertNotNull(this.lastEvent);
   
}

    
private AnnotationChangeEvent lastEvent;
    

    
/**
     
* Receives notification of a change to an annotation.
     
*
 

     
* @param event
  
the event.
 

     
*/

    
@Override
    
public void annotationChanged(AnnotationChangeEvent event) {
        
this.lastEvent = event;
  

    
}

}