1   /*
2    * $Header$
3    * $Revision$
4    * $Date$
5    *
6    * ====================================================================
7    *
8    * Copyright 2000-2002 bob mcwhirter & James Strachan.
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 java.io.IOException;
51  
52  import javax.xml.parsers.DocumentBuilder;
53  import javax.xml.parsers.DocumentBuilderFactory;
54  import javax.xml.parsers.ParserConfigurationException;
55  
56  import junit.framework.TestCase;
57  
58  import org.jaxen.BaseXPath;
59  import org.jaxen.FunctionCallException;
60  import org.jaxen.JaxenException;
61  import org.jaxen.XPath;
62  import org.jaxen.dom.DOMXPath;
63  import org.w3c.dom.Document;
64  import org.xml.sax.SAXException;
65  
66  /***
67   * @author Elliotte Rusty Harold
68   *
69   */
70  public class CountTest extends TestCase {
71  
72      private Document doc;
73      
74      public void setUp() throws ParserConfigurationException, SAXException, IOException
75      {
76          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
77          factory.setNamespaceAware(true);
78          DocumentBuilder builder = factory.newDocumentBuilder();
79          doc = builder.parse( "xml/basic.xml" );
80      }
81  
82  
83      public CountTest(String name) {
84          super(name);
85      }
86  
87      public void testCount3()
88      {
89          try
90          {
91              XPath xpath = new DOMXPath( "count(3)" );
92              xpath.selectNodes( doc );
93              fail("Allowed count of number");
94         }
95         catch (FunctionCallException e) 
96          {
97             assertEquals("count() function can only be used for node-sets", e.getMessage());
98          }
99         catch (Exception e)
100         {
101             e.printStackTrace();
102             fail( e.getMessage() );
103         }
104     }    
105     
106     public void testCountFunctionRequiresAtLeastOneArgument() 
107       throws JaxenException {
108         
109         BaseXPath xpath = new DOMXPath("count()");
110         
111         try {
112             xpath.selectNodes(doc);
113             fail("Allowed count function with no arguments");
114         }
115         catch (FunctionCallException ex) {
116             assertNotNull(ex.getMessage());
117         }
118         
119     }    
120 
121     public void testCountFunctionRequiresAtMostOneArgument() 
122       throws JaxenException {
123         
124         BaseXPath xpath = new DOMXPath("count(/*, /@*)");
125         
126         try {
127             xpath.selectNodes(doc);
128             fail("Allowed count function with two arguments");
129         }
130         catch (FunctionCallException ex) {
131             assertNotNull(ex.getMessage());
132         }
133         
134     } 
135     
136     public void testCountRootElement() 
137       throws JaxenException {
138         
139         BaseXPath xpath = new DOMXPath("count(/*)");
140         Double result = (Double) xpath.evaluate(doc);
141         assertEquals(1.0, result.doubleValue(), 0.00001);
142         
143     }  
144     
145     
146 }