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 javax.xml.parsers.DocumentBuilder;
65  import javax.xml.parsers.DocumentBuilderFactory;
66  import javax.xml.parsers.ParserConfigurationException;
67  
68  import junit.framework.TestCase;
69  
70  import org.jaxen.BaseXPath;
71  import org.jaxen.FunctionCallException;
72  import org.jaxen.JaxenException;
73  import org.jaxen.dom.DOMXPath;
74  import org.w3c.dom.Document;
75  
76  /***
77   * @author Elliotte Rusty Harold
78   *
79   */
80  public class RoundTest extends TestCase {
81  
82      private Document doc;
83      
84      public void setUp() throws ParserConfigurationException
85      {
86          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
87          factory.setNamespaceAware(true);
88          DocumentBuilder builder = factory.newDocumentBuilder();
89          doc = builder.newDocument();
90          org.w3c.dom.Element a = doc.createElementNS("", "a");
91          doc.appendChild(a);
92      }
93  
94  
95      public RoundTest(String name) {
96          super(name);
97      }
98  
99      
100     public void testRound() throws JaxenException {
101         
102         BaseXPath xpath = new DOMXPath("round(1.5)");
103         
104         Object result = xpath.evaluate(doc);
105         assertEquals(2, ((Double) result).doubleValue(), 0.0001);
106         
107     }    
108 
109     public void testNegativeRound() throws JaxenException {
110         
111         BaseXPath xpath = new DOMXPath("round(-1.5)");
112         
113         Object result = xpath.evaluate(doc);
114         assertEquals(-1, ((Double) result).doubleValue(), 0.0001);
115         
116     }    
117 
118     public void testNaNRoundIsNaN() throws JaxenException {
119         BaseXPath xpath = new DOMXPath("round(1.0 div 0.0 - 2.0 div 0.0)");
120         double result = ((Double) xpath.evaluate(doc)).doubleValue();
121         assertTrue(Double.isNaN(result));
122     }    
123 
124     public void testRoundFunctionRequiresAtLeastOneArgument() 
125       throws JaxenException {
126         
127         BaseXPath xpath = new DOMXPath("round()");
128         
129         try {
130             xpath.selectNodes(doc);
131             fail("Allowed round function with no arguments");
132         }
133         catch (FunctionCallException ex) {
134             assertNotNull(ex.getMessage());
135         }
136         
137     }    
138 
139     public void testRoundFunctionRequiresAtMostOneArgument() 
140       throws JaxenException {
141         
142         BaseXPath xpath = new DOMXPath("round(2.2, 1.2)");
143         
144         try {
145             xpath.selectNodes(doc);
146             fail("Allowed round function with two arguments");
147         }
148         catch (FunctionCallException ex) {
149             assertNotNull(ex.getMessage());
150         }
151         
152     }    
153 
154 }