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.XPath;
77  import org.jaxen.dom.DOMXPath;
78  import org.w3c.dom.Document;
79  import org.xml.sax.SAXException;
80  
81  /***
82   * @author Elliotte Rusty Harold
83   *
84   */
85  public class LastTest extends TestCase {
86  
87      private Document doc;
88      
89      public void setUp() throws ParserConfigurationException, SAXException, IOException
90      {
91          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
92          factory.setNamespaceAware(true);
93          DocumentBuilder builder = factory.newDocumentBuilder();
94          doc = builder.newDocument();
95      }
96  
97  
98      public LastTest(String name) {
99          super(name);
100     }
101 
102     // test case for JAXEN-55
103     public void testLastFunction() 
104       throws JaxenException {
105         
106         BaseXPath xpath = new DOMXPath("//x[position()=last()]");
107         org.w3c.dom.Element a = doc.createElementNS("", "a");
108         org.w3c.dom.Element b = doc.createElementNS("", "b");
109         doc.appendChild(a);
110         a.appendChild(b);
111         org.w3c.dom.Element x2 = doc.createElementNS("", "x");
112         org.w3c.dom.Element x3 = doc.createElementNS("", "x");
113         org.w3c.dom.Element x4 = doc.createElementNS("", "x");
114         a.appendChild(x4);
115         b.appendChild(x2);
116         b.appendChild(x3);
117         x2.appendChild(doc.createTextNode("2"));
118         x3.appendChild(doc.createTextNode("3"));
119         x4.appendChild(doc.createTextNode("4"));
120         
121         List result = xpath.selectNodes(doc);
122         assertEquals(2, result.size());
123         assertEquals(x3, result.get(0));
124         assertEquals(x4, result.get(1));
125         
126     }    
127 
128     public void testLastFunctionAllowsNoArguments() throws JaxenException
129     {
130         try
131         {
132             BaseXPath xpath = new DOMXPath("//x[position()=last(.)]");
133             org.w3c.dom.Element a = doc.createElementNS("", "a");
134             org.w3c.dom.Element b = doc.createElementNS("", "b");
135             doc.appendChild(a);
136             a.appendChild(b);
137             org.w3c.dom.Element x2 = doc.createElementNS("", "x");
138             org.w3c.dom.Element x3 = doc.createElementNS("", "x");
139             org.w3c.dom.Element x4 = doc.createElementNS("", "x");
140             a.appendChild(x4);
141             b.appendChild(x2);
142             b.appendChild(x3);
143             x2.appendChild(doc.createTextNode("2"));
144             x3.appendChild(doc.createTextNode("3"));
145             x4.appendChild(doc.createTextNode("4"));
146        
147             xpath.selectNodes(doc);
148             fail("last() function took arguments");
149         }
150         catch (FunctionCallException e) 
151         {
152             assertEquals("last() requires no arguments.", e.getMessage());
153         }
154     }    
155 
156     
157     
158     
159 }