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 BooleanTest 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      }
93  
94  
95      public BooleanTest(String name) {
96          super(name);
97      }
98  
99      // test case for JAXEN-55
100     public void testNonEmptyNodeSetsAreTrue() 
101       throws JaxenException {
102         
103         BaseXPath xpath = new DOMXPath("boolean(//x)");
104         org.w3c.dom.Element a = doc.createElementNS("", "a");
105         org.w3c.dom.Element b = doc.createElementNS("", "b");
106         doc.appendChild(a);
107         a.appendChild(b);
108         org.w3c.dom.Element x2 = doc.createElementNS("", "x");
109         org.w3c.dom.Element x3 = doc.createElementNS("", "x");
110         org.w3c.dom.Element x4 = doc.createElementNS("", "x");
111         a.appendChild(x4);
112         b.appendChild(x2);
113         b.appendChild(x3);
114         x2.appendChild(doc.createTextNode("false"));
115         x3.appendChild(doc.createTextNode("false"));
116         x4.appendChild(doc.createTextNode("false"));
117         
118         List result = xpath.selectNodes(doc);
119         assertEquals(1, result.size());
120         assertEquals(Boolean.TRUE, result.get(0));
121         
122     }    
123 
124     public void testEmptyNodeSetsAreFalse() 
125       throws JaxenException {
126         
127         BaseXPath xpath = new DOMXPath("boolean(//y)");
128         org.w3c.dom.Element a = doc.createElementNS("", "a");
129         org.w3c.dom.Element b = doc.createElementNS("", "b");
130         doc.appendChild(a);
131         a.appendChild(b);
132         org.w3c.dom.Element x2 = doc.createElementNS("", "x");
133         org.w3c.dom.Element x3 = doc.createElementNS("", "x");
134         org.w3c.dom.Element x4 = doc.createElementNS("", "x");
135         a.appendChild(x4);
136         b.appendChild(x2);
137         b.appendChild(x3);
138         x2.appendChild(doc.createTextNode("false"));
139         x3.appendChild(doc.createTextNode("false"));
140         x4.appendChild(doc.createTextNode("false"));
141         
142         List result = xpath.selectNodes(doc);
143         assertEquals(1, result.size());
144         assertEquals(Boolean.FALSE, result.get(0));
145         
146     }    
147 
148     public void testZeroIsFalse() 
149       throws JaxenException {
150         
151         BaseXPath xpath = new DOMXPath("boolean(0)");
152         org.w3c.dom.Element a = doc.createElementNS("", "a");
153         
154         List result = xpath.selectNodes(a);
155         assertEquals(1, result.size());
156         assertEquals(Boolean.FALSE, result.get(0));
157         
158     }    
159 
160     public void testEmptyStringIsFalse() 
161       throws JaxenException {
162         
163         BaseXPath xpath = new DOMXPath("boolean('')");
164         org.w3c.dom.Element a = doc.createElementNS("", "a");
165         
166         List result = xpath.selectNodes(a);
167         assertEquals(1, result.size());
168         assertEquals(Boolean.FALSE, result.get(0));
169         
170     }    
171 
172     public void testNaNIsFalse() 
173       throws JaxenException {
174         
175         BaseXPath xpath = new DOMXPath("boolean(0 div 0)");
176         Object result = xpath.evaluate(null);
177         assertEquals(Boolean.FALSE, result);
178         
179     }    
180 
181     public void testNonEmptyStringIsTrue() 
182       throws JaxenException {
183         
184         BaseXPath xpath = new DOMXPath("boolean('false')");
185         org.w3c.dom.Element a = doc.createElementNS("", "a");
186         
187         List result = xpath.selectNodes(a);
188         assertEquals(1, result.size());
189         assertEquals(Boolean.TRUE, result.get(0));
190         
191     }    
192 
193     public void testBooleanFunctionRequiresOneArgument() 
194       throws JaxenException {
195         
196         BaseXPath xpath = new DOMXPath("boolean()");
197         org.w3c.dom.Element a = doc.createElementNS("", "a");
198         
199         try {
200             xpath.selectNodes(a);
201             fail("Allowed boolean function with no arguments");
202         }
203         catch (FunctionCallException ex) {
204             assertNotNull(ex.getMessage());
205         }
206         
207     }    
208 
209     public void testBooleanFunctionRequiresExactlyOneArgument() 
210       throws JaxenException {
211         
212         BaseXPath xpath = new DOMXPath("boolean('', '')");
213         org.w3c.dom.Element a = doc.createElementNS("", "a");
214         
215         try {
216             xpath.selectNodes(a);
217             fail("Allowed boolean function with two arguments");
218         }
219         catch (FunctionCallException ex) {
220             assertNotNull(ex.getMessage());
221         }
222         
223     }    
224 
225 }