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.BaseXPath;
57  import org.jaxen.FunctionCallException;
58  import org.jaxen.JaxenException;
59  import org.jaxen.XPath;
60  import org.jaxen.dom.DOMXPath;
61  import org.w3c.dom.Document;
62  
63  /***
64   * @author Elliotte Rusty Harold
65   *
66   */
67  public class StringLengthTest extends TestCase {
68  
69      private Document doc;
70      
71      public void setUp() throws ParserConfigurationException
72      {
73          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
74          factory.setNamespaceAware(true);
75          DocumentBuilder builder = factory.newDocumentBuilder();
76          doc = builder.newDocument();
77          doc.appendChild(doc.createElement("root"));
78      }
79  
80  
81      public StringLengthTest(String name) {
82          super(name);
83      }
84  
85      public void testStringLengthOfNumber() throws JaxenException
86      {
87          XPath xpath = new DOMXPath( "string-length(3)" );
88          Double result = (Double) xpath.evaluate( doc );
89          assertEquals(1, result.intValue());
90      }    
91    
92      public void testStringLengthOfEmptyString() throws JaxenException
93      {
94          XPath xpath = new DOMXPath( "string-length('')" );
95          Double result = (Double) xpath.evaluate( doc );
96          assertEquals(0, result.intValue());
97      }    
98    
99      public void testStringLengthOfString() throws JaxenException
100     {
101         XPath xpath = new DOMXPath( "string-length('0123456789')" );
102         Double result = (Double) xpath.evaluate( doc );
103         assertEquals(10, result.intValue());
104     }    
105   
106     public void testStringLengthFunctionOperatesOnContextNode() 
107       throws JaxenException {
108         
109         BaseXPath xpath = new DOMXPath("string-length()");
110         Double result = (Double) xpath.evaluate( doc );
111         assertEquals(0, result.intValue());
112         
113     }    
114 
115     public void testStringLengthFunctionCountsUnicodeCharactersNotJavaChars() 
116       throws JaxenException {
117    
118         BaseXPath xpath = new DOMXPath("string-length('\uD834\uDD00')");
119         Double result = (Double) xpath.evaluate( doc );
120         assertEquals(1, result.intValue());
121         
122     }    
123 
124     public void testStringLengthFunctionWithMalformedString() 
125       throws JaxenException {
126    
127         BaseXPath xpath = new DOMXPath("string-length('\uD834A\uDD00')");
128         try {
129             xpath.evaluate( doc );
130             fail("Allowed Malformed string");
131         }
132         catch (FunctionCallException ex) {
133             assertNotNull(ex.getMessage());
134         }
135         
136     }    
137 
138     public void testStringLengthFunctionRequiresExactlyOneArgument() 
139       throws JaxenException {
140         
141         BaseXPath xpath = new DOMXPath("string-length('', '')");
142         
143         try {
144             xpath.selectNodes(doc);
145             fail("Allowed string-length function with two arguments");
146         }
147         catch (FunctionCallException ex) {
148             assertNotNull(ex.getMessage());
149         }
150         
151     }    
152 
153 }