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 java.util.List;
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.FunctionCallException;
59  import org.jaxen.JaxenException;
60  import org.jaxen.XPath;
61  import org.jaxen.dom.DOMXPath;
62  import org.jaxen.dom.DocumentNavigator;
63  import org.jaxen.function.StringFunction;
64  import org.w3c.dom.Document;
65  
66  /***
67   * @author Elliotte Rusty Harold
68   *
69   */
70  public class StringTest extends TestCase {
71  
72      private Document doc;
73      
74      public void setUp() throws ParserConfigurationException
75      {
76          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
77          factory.setNamespaceAware(true);
78          DocumentBuilder builder = factory.newDocumentBuilder();
79          doc = builder.newDocument();
80      }
81  
82  
83      public StringTest(String name) {
84          super(name);
85      }
86  
87      // test case for JAXEN-55
88      public void testStringFunctionOperatesOnFirstNodeInDocumentOrder() 
89        throws JaxenException {
90          
91          XPath xpath = new DOMXPath("string(//x)");
92          org.w3c.dom.Element a = doc.createElementNS("", "a");
93          org.w3c.dom.Element b = doc.createElementNS("", "b");
94          doc.appendChild(a);
95          a.appendChild(b);
96          org.w3c.dom.Element x2 = doc.createElementNS("", "x");
97          org.w3c.dom.Element x3 = doc.createElementNS("", "x");
98          org.w3c.dom.Element x4 = doc.createElementNS("", "x");
99          a.appendChild(x4);
100         b.appendChild(x2);
101         b.appendChild(x3);
102         x2.appendChild(doc.createTextNode("2"));
103         x3.appendChild(doc.createTextNode("3"));
104         x4.appendChild(doc.createTextNode("4"));
105         
106         List result = xpath.selectNodes(doc);
107         assertEquals(1, result.size());
108         assertEquals("2", result.get(0));
109         
110     }
111     
112     public void testStringValueOfComment() 
113       throws JaxenException {
114         
115         XPath xpath = new DOMXPath("string(/a/comment())");
116         org.w3c.dom.Element a = doc.createElementNS("", "a");
117         doc.appendChild(a);
118         a.appendChild(doc.createComment("data"));
119         
120         String result = (String) xpath.evaluate(doc);
121         assertEquals("data", result);
122         
123     }
124     
125     public void testStringValueOfNull() {
126         assertEquals("", StringFunction.evaluate(null, null));
127     }
128     
129     public void testStringValueOfNullWithNonNullNavigator() {
130         assertEquals("", StringFunction.evaluate(null, new DocumentNavigator()));
131     }
132     
133     public void testStringValueOfNamespaceNode() 
134       throws JaxenException {
135         
136         XPath xpath = new DOMXPath("string(/a/namespace::node())");
137         org.w3c.dom.Element a = doc.createElementNS("", "a");
138         doc.appendChild(a);
139         
140         String result = (String) xpath.evaluate(doc);
141         assertEquals("http://www.w3.org/XML/1998/namespace", result);
142         
143     }
144     
145     public void testSmallNumbersDontUseExponentialNotation() throws JaxenException {
146         XPath xpath = new DOMXPath("string(0.0000003)");
147         String result = (String) xpath.evaluate(null);
148         assertEquals("0.0000003", result);
149     }
150 
151     public void testBigNumbersDontUseExponentialNotation() throws JaxenException {
152         XPath xpath = new DOMXPath("string(100000000.5)");
153         String result = (String) xpath.evaluate(null);
154         assertEquals("100000000.5", result);
155     }
156 
157     public void testStringOfInfinity() throws JaxenException {
158         XPath xpath = new DOMXPath("string(1 div 0)");
159         String result = (String) xpath.evaluate(null);
160         assertEquals("Infinity", result);
161     }
162 
163     public void testStringOfNegativeInfinity() throws JaxenException {
164         XPath xpath = new DOMXPath("string(-1 div 0)");
165         String result = (String) xpath.evaluate(null);
166         assertEquals("-Infinity", result);
167     }
168 
169     public void testStringOfNegativeZero() throws JaxenException {
170         XPath xpath = new DOMXPath("string(-0)");
171         String result = (String) xpath.evaluate(null);
172         assertEquals("0", result);
173     }
174 
175     public void testIntegersAreFormattedAsInts() throws JaxenException {
176         XPath xpath = new DOMXPath("string(12)");
177         String result = (String) xpath.evaluate(null);
178         assertEquals("12", result);
179     } 
180 
181     public void testStringFunctionRequiresAtMostOneArgument() 
182       throws JaxenException {
183         
184         XPath xpath = new DOMXPath("string('a', 1)");
185         
186         try {
187             xpath.selectNodes(doc);
188             fail("Allowed string function with two arguments");
189         }
190         catch (FunctionCallException ex) {
191             assertNotNull(ex.getMessage());
192         }
193         
194     }
195 }