1   /*
2    * $Header$
3    * $Revision$
4    * $Date$
5    *
6    * ====================================================================
7    *
8    * Copyright (C) 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
13   * are met:
14   * 
15   * 1. Redistributions of source code must retain the above copyright
16   *    notice, this list of conditions, and the following disclaimer.
17   *
18   * 2. Redistributions in binary form must reproduce the above copyright
19   *    notice, this list of conditions, and the disclaimer that follows 
20   *    these conditions in the documentation and/or other materials 
21   *    provided with the distribution.
22   *
23   * 3. The name "Jaxen" must not be used to endorse or promote products
24   *    derived from this software without prior written permission.  For
25   *    written permission, please contact license@jaxen.org.
26   * 
27   * 4. Products derived from this software may not be called "Jaxen", nor
28   *    may "Jaxen" appear in their name, without prior written permission
29   *    from the Jaxen Project Management (pm@jaxen.org).
30   * 
31   * In addition, we request (but do not require) that you include in the 
32   * end-user documentation provided with the redistribution and/or in the 
33   * software itself an acknowledgement equivalent to the following:
34   *     "This product includes software developed by the
35   *      Jaxen Project (http://www.jaxen.org/)."
36   * Alternatively, the acknowledgment may be graphical using the logos 
37   * available at http://www.jaxen.org/
38   *
39   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
40   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42   * DISCLAIMED.  IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT
43   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
45   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
46   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
47   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
49   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50   * SUCH DAMAGE.
51   *
52   * ====================================================================
53   * This software consists of voluntary contributions made by many 
54   * individuals on behalf of the Jaxen Project and was originally 
55   * created by bob mcwhirter <bob@werken.com> and 
56   * James Strachan <jstrachan@apache.org>.  For more information on the 
57   * Jaxen Project, please see <http://www.jaxen.org/>.
58   * 
59   * $Id$
60   */
61  
62  package org.jaxen.function;
63  
64  import java.util.List;
65  
66  import javax.xml.parsers.DocumentBuilder;
67  import javax.xml.parsers.DocumentBuilderFactory;
68  import javax.xml.parsers.ParserConfigurationException;
69  
70  import junit.framework.TestCase;
71  
72  import org.jaxen.BaseXPath;
73  import org.jaxen.FunctionCallException;
74  import org.jaxen.JaxenException;
75  import org.jaxen.dom.DOMXPath;
76  import org.w3c.dom.Document;
77  
78  /***
79   * @author Elliotte Rusty Harold
80   *
81   */
82  public class NotTest extends TestCase {
83  
84      private Document doc;
85      
86      public void setUp() throws ParserConfigurationException
87      {
88          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
89          factory.setNamespaceAware(true);
90          DocumentBuilder builder = factory.newDocumentBuilder();
91          doc = builder.newDocument();
92          doc.appendChild(doc.createElement("root"));
93      }
94  
95  
96      public NotTest(String name) {
97          super(name);
98      }
99  
100     public void testZeroIsFalse() 
101       throws JaxenException {
102         
103         BaseXPath xpath = new DOMXPath("not(0)");
104         
105         List result = xpath.selectNodes(doc);
106         assertEquals(1, result.size());
107         assertEquals(Boolean.TRUE, result.get(0));
108         
109     }    
110 
111     public void testOneIsTrue() 
112       throws JaxenException {
113         
114         BaseXPath xpath = new DOMXPath("not(1)");
115         
116         List result = xpath.selectNodes(doc);
117         assertEquals(1, result.size());
118         assertEquals(Boolean.FALSE, result.get(0));
119         
120     }    
121 
122     public void testEmptyStringIsFalse() 
123       throws JaxenException {
124         
125         BaseXPath xpath = new DOMXPath("not('')");
126         
127         List result = xpath.selectNodes(doc);
128         assertEquals(1, result.size());
129         assertEquals(Boolean.TRUE, result.get(0));
130         
131     }    
132 
133     public void testNaNIsFalse() 
134       throws JaxenException {
135         
136         BaseXPath xpath = new DOMXPath("not(0 div 0)");
137         Object result = xpath.evaluate(null);
138         assertEquals(Boolean.TRUE, result);
139         
140     }    
141 
142     public void testNonEmptyStringIsTrue() 
143       throws JaxenException {
144         
145         BaseXPath xpath = new DOMXPath("not('false')");
146         
147         List result = xpath.selectNodes(doc);
148         assertEquals(1, result.size());
149         assertEquals(Boolean.FALSE, result.get(0));
150         
151     }    
152 
153     public void testNotFunctionRequiresOneArgument() 
154       throws JaxenException {
155         
156         BaseXPath xpath = new DOMXPath("not()");
157         
158         try {
159             xpath.selectNodes(doc);
160             fail("Allowed not() function with no arguments");
161         }
162         catch (FunctionCallException ex) {
163             assertNotNull(ex.getMessage());
164         }
165         
166     }    
167 
168     public void testNotFunctionRequiresExactlyOneArgument() 
169       throws JaxenException {
170         
171         BaseXPath xpath = new DOMXPath("not('', '')");
172         
173         try {
174             xpath.selectNodes(doc);
175             fail("Allowed not() function with two arguments");
176         }
177         catch (FunctionCallException ex) {
178             assertNotNull(ex.getMessage());
179         }
180         
181     }    
182 
183 }