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  
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.XPath;
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 StringLengthTest 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 StringLengthTest(String name) {
99          super(name);
100     }
101 
102     public void testStringLengthOfNumber() throws JaxenException
103     {
104         XPath xpath = new DOMXPath( "string-length(3)" );
105         Double result = (Double) xpath.evaluate( doc );
106         assertEquals(1, result.intValue());
107     }    
108   
109     public void testStringLengthOfEmptyString() throws JaxenException
110     {
111         XPath xpath = new DOMXPath( "string-length('')" );
112         Double result = (Double) xpath.evaluate( doc );
113         assertEquals(0, result.intValue());
114     }    
115   
116     public void testStringLengthOfString() throws JaxenException
117     {
118         XPath xpath = new DOMXPath( "string-length('0123456789')" );
119         Double result = (Double) xpath.evaluate( doc );
120         assertEquals(10, result.intValue());
121     }    
122   
123     public void testStringLengthFunctionOperatesOnContextNode() 
124       throws JaxenException {
125         
126         BaseXPath xpath = new DOMXPath("string-length()");
127         Double result = (Double) xpath.evaluate( doc );
128         assertEquals(0, result.intValue());
129         
130     }    
131 
132     public void testStringLengthFunctionRequiresExactlyOneArgument() 
133       throws JaxenException {
134         
135         BaseXPath xpath = new DOMXPath("string-length('', '')");
136         
137         try {
138             xpath.selectNodes(doc);
139             fail("Allowed string-length function with two arguments");
140         }
141         catch (FunctionCallException ex) {
142             assertNotNull(ex.getMessage());
143         }
144         
145     }    
146 
147 }