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.io.IOException;
65  import java.util.List;
66  
67  import javax.xml.parsers.DocumentBuilder;
68  import javax.xml.parsers.DocumentBuilderFactory;
69  import javax.xml.parsers.ParserConfigurationException;
70  
71  import junit.framework.TestCase;
72  
73  import org.jaxen.BaseXPath;
74  import org.jaxen.FunctionCallException;
75  import org.jaxen.JaxenException;
76  import org.jaxen.dom.DOMXPath;
77  import org.w3c.dom.Document;
78  import org.xml.sax.SAXException;
79  
80  /***
81   * @author Elliotte Rusty Harold
82   *
83   */
84  public class NotTest extends TestCase {
85  
86      private Document doc;
87      
88      public void setUp() throws ParserConfigurationException, SAXException, IOException
89      {
90          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
91          factory.setNamespaceAware(true);
92          DocumentBuilder builder = factory.newDocumentBuilder();
93          doc = builder.newDocument();
94          doc.appendChild(doc.createElement("root"));
95      }
96  
97  
98      public NotTest(String name) {
99          super(name);
100     }
101 
102     public void testZeroIsFalse() 
103       throws JaxenException {
104         
105         BaseXPath xpath = new DOMXPath("not(0)");
106         
107         List result = xpath.selectNodes(doc);
108         assertEquals(1, result.size());
109         assertEquals(Boolean.TRUE, result.get(0));
110         
111     }    
112 
113     public void testOneIsTrue() 
114       throws JaxenException {
115         
116         BaseXPath xpath = new DOMXPath("not(1)");
117         
118         List result = xpath.selectNodes(doc);
119         assertEquals(1, result.size());
120         assertEquals(Boolean.FALSE, result.get(0));
121         
122     }    
123 
124     public void testEmptyStringIsFalse() 
125       throws JaxenException {
126         
127         BaseXPath xpath = new DOMXPath("not('')");
128         
129         List result = xpath.selectNodes(doc);
130         assertEquals(1, result.size());
131         assertEquals(Boolean.TRUE, result.get(0));
132         
133     }    
134 
135     public void testNaNIsFalse() 
136       throws JaxenException {
137         
138         BaseXPath xpath = new DOMXPath("not(0 div 0)");
139         Object result = xpath.evaluate(null);
140         assertEquals(Boolean.TRUE, result);
141         
142     }    
143 
144     public void testNonEmptyStringIsTrue() 
145       throws JaxenException {
146         
147         BaseXPath xpath = new DOMXPath("not('false')");
148         
149         List result = xpath.selectNodes(doc);
150         assertEquals(1, result.size());
151         assertEquals(Boolean.FALSE, result.get(0));
152         
153     }    
154 
155     public void testNotFunctionRequiresOneArgument() 
156       throws JaxenException {
157         
158         BaseXPath xpath = new DOMXPath("not()");
159         
160         try {
161             xpath.selectNodes(doc);
162             fail("Allowed not function with no arguments");
163         }
164         catch (FunctionCallException ex) {
165             assertNotNull(ex.getMessage());
166         }
167         
168     }    
169 
170     public void testNotFunctionRequiresExactlyOneArgument() 
171       throws JaxenException {
172         
173         BaseXPath xpath = new DOMXPath("not('', '')");
174         
175         try {
176             xpath.selectNodes(doc);
177             fail("Allowed boolean function with two arguments");
178         }
179         catch (FunctionCallException ex) {
180             assertNotNull(ex.getMessage());
181         }
182         
183     }    
184 
185 }