1   /*
2    * $Header$
3    * $Revision$
4    * $Date$
5    *
6    * ====================================================================
7    *
8    * Copyright 2005 Elliotte Rusty Harold.
9    * All rights reserved.
10   *
11   * Redistribution and use in source and binary forms, with or without
12   * modification, are permitted provided that the following conditions are
13   * met:
14   * 
15   *   * Redistributions of source code must retain the above copyright
16   *     notice, this list of conditions and the following disclaimer.
17   * 
18   *   * Redistributions in binary form must reproduce the above copyright
19   *     notice, this list of conditions and the following disclaimer in the
20   *     documentation and/or other materials provided with the distribution.
21   * 
22   *   * Neither the name of the Jaxen Project nor the names of its
23   *     contributors may be used to endorse or promote products derived 
24   *     from this software without specific prior written permission.
25   * 
26   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
29   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
30   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37   *
38   * ====================================================================
39   * This software consists of voluntary contributions made by many 
40   * individuals on behalf of the Jaxen Project and was originally 
41   * created by bob mcwhirter <bob@werken.com> and 
42   * James Strachan <jstrachan@apache.org>.  For more information on the 
43   * Jaxen Project, please see <http://www.jaxen.org/>.
44   * 
45   * $Id$
46   */
47  
48  package org.jaxen.test;
49  
50  import javax.xml.parsers.DocumentBuilder;
51  import javax.xml.parsers.DocumentBuilderFactory;
52  import javax.xml.parsers.ParserConfigurationException;
53  
54  import junit.framework.TestCase;
55  
56  import org.jaxen.JaxenException;
57  import org.jaxen.XPath;
58  import org.jaxen.dom.DOMXPath;
59  import org.w3c.dom.Document;
60  
61  /**
62   * @author Elliotte Rusty Harold
63   *
64   */
65  public class ArithmeticTest extends TestCase {
66  
67      private Document doc;
68      
69      public void setUp() throws ParserConfigurationException
70      {
71          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
72          factory.setNamespaceAware(true);
73          DocumentBuilder builder = factory.newDocumentBuilder();
74          doc = builder.newDocument();
75          org.w3c.dom.Element a = doc.createElementNS("", "a");
76          doc.appendChild(a);
77      }
78  
79  
80      public ArithmeticTest(String name) {
81          super(name);
82      }
83  
84      public void testNumbersThatBeginWithADecimalPoint() 
85        throws JaxenException {
86          XPath xpath = new DOMXPath(".5 > .4");
87          Boolean result = (Boolean) xpath.evaluate(doc);
88          assertTrue(result.booleanValue());
89          
90      }    
91  
92      
93     public void testNumbersThatBeginWithADecimalPoint2() 
94        throws JaxenException {
95          
96          XPath xpath = new DOMXPath(".3 <= .4 <= 1.1");
97          Boolean result = (Boolean) xpath.evaluate(doc);
98          assertTrue(result.booleanValue());
99          
100     }    
101 
102    public void testLeftAssociativityOfLessThanOrEqual() 
103       throws JaxenException {
104         
105         XPath xpath = new DOMXPath(".3 <= .4 <= 0.9");
106         Boolean result = (Boolean) xpath.evaluate(doc);
107         assertFalse(result.booleanValue());
108         
109     }    
110    
111 
112    public void testNegativeZeroNotEqualsZero() 
113       throws JaxenException {
114         
115         XPath xpath = new DOMXPath("0 != -0");
116         Boolean result = (Boolean) xpath.evaluate(doc);
117         assertFalse(result.booleanValue());
118         
119    }    
120    
121    
122    public void testNegativeZeroEqualsZero() 
123       throws JaxenException {
124         
125         XPath xpath = new DOMXPath("0 = -0");
126         Boolean result = (Boolean) xpath.evaluate(doc);
127         assertTrue(result.booleanValue());
128         
129    }    
130    
131    
132    public void testZeroNotGreaterThanNegativeZero() 
133       throws JaxenException {
134      
135      XPath xpath = new DOMXPath("0 > -0");
136      Boolean result = (Boolean) xpath.evaluate(doc);
137      assertFalse(result.booleanValue());
138      
139    } 
140    
141    public void testZeroGreaterThanOrEqualsToNegativeZero() 
142        throws JaxenException {
143   
144       XPath xpath = new DOMXPath("0 >= -0");
145       Boolean result = (Boolean) xpath.evaluate(doc);
146       assertTrue(result.booleanValue());
147       
148    } 
149 
150     public void testZeroLessThanOrEqualToNegativeZero()
151        throws JaxenException {
152 
153       XPath xpath = new DOMXPath("0 <= -0");
154       Boolean result = (Boolean) xpath.evaluate(doc);
155       assertTrue(result.booleanValue());
156 
157    } 
158 
159    
160    public void testNegativeZeroNotLessThanZero() 
161       throws JaxenException {
162      
163      XPath xpath = new DOMXPath("-0 < 0");
164      Boolean result = (Boolean) xpath.evaluate(doc);
165      assertFalse(result.booleanValue());
166      
167    }   
168    
169 
170    public void testNaNNotEqualsString() 
171       throws JaxenException {
172         
173         XPath xpath = new DOMXPath("(0.0 div 0.0) != 'foo'");
174         Boolean result = (Boolean) xpath.evaluate(doc);
175         assertTrue(result.booleanValue());
176         
177    }    
178    
179 
180    public void testNaNEqualsString() 
181       throws JaxenException {
182         
183         XPath xpath = new DOMXPath("(0.0 div 0.0) = 'foo'");
184         Boolean result = (Boolean) xpath.evaluate(doc);
185         assertFalse(result.booleanValue());
186         
187    }  
188    
189    public void testEqualityPrecedence() 
190       throws JaxenException {
191         
192         XPath xpath = new DOMXPath("1.5 = 2.3 = 2.3");
193         Boolean result = (Boolean) xpath.evaluate(doc);
194         assertFalse(result.booleanValue());
195         
196    }  
197 
198     
199 }