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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 JavaDoc;
65 import javax.xml.parsers.DocumentBuilderFactory JavaDoc;
66 import javax.xml.parsers.ParserConfigurationException JavaDoc;
67
68 import junit.framework.TestCase;
69
70 import org.jaxen.FunctionCallException;
71 import org.jaxen.JaxenException;
72 import org.jaxen.XPath;
73 import org.jaxen.dom.DOMXPath;
74 import org.w3c.dom.Document JavaDoc;
75
76 /**
77  * @author Elliotte Rusty Harold
78  *
79  */

80 public class SubstringTest extends TestCase {
81
82     private Document JavaDoc doc;
83     
84     public void setUp() throws ParserConfigurationException JavaDoc
85     {
86         DocumentBuilderFactory JavaDoc factory = DocumentBuilderFactory.newInstance();
87         factory.setNamespaceAware(true);
88         DocumentBuilder JavaDoc builder = factory.newDocumentBuilder();
89         doc = builder.newDocument();
90         doc.appendChild(doc.createElement("root"));
91     }
92
93
94     public SubstringTest(String JavaDoc name) {
95         super(name);
96     }
97
98     public void testSubstringOfNumber() throws JaxenException
99     {
100         XPath xpath = new DOMXPath( "substring(1234, 3)" );
101         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
102         assertEquals("34", result);
103     }
104   
105     public void testSubstringOfNumber2() throws JaxenException
106     {
107         XPath xpath = new DOMXPath( "substring(1234, 2, 3)" );
108         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
109         assertEquals("234", result);
110     }
111     
112     // Unusual tests from XPath spec
113

114     public void testUnusualSubstring1() throws JaxenException
115     {
116         XPath xpath = new DOMXPath( "substring('12345', 1.5, 2.6)" );
117         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
118         assertEquals("234", result);
119     }
120
121
122     public void testUnusualSubstring2() throws JaxenException
123     {
124         XPath xpath = new DOMXPath( "substring('12345', 0, 3)" );
125         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
126         assertEquals("12", result);
127     }
128
129
130     public void testUnusualSubstring3() throws JaxenException
131     {
132         XPath xpath = new DOMXPath( "substring('12345', 0 div 0, 3)" );
133         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
134         assertEquals("", result);
135     }
136
137     public void testUnusualSubstring4() throws JaxenException
138     {
139         XPath xpath = new DOMXPath( "substring('12345', 1, 0 div 0)" );
140         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
141         assertEquals("", result);
142     }
143
144     public void testUnusualSubstring5() throws JaxenException
145     {
146         XPath xpath = new DOMXPath( "substring('12345', -42, 1 div 0)" );
147         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
148         assertEquals("12345", result);
149     }
150
151     public void testUnusualSubstring6() throws JaxenException
152     {
153         XPath xpath = new DOMXPath( "substring('12345', -1 div 0, 1 div 0)" );
154         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
155         assertEquals("", result);
156     }
157
158   
159     public void testSubstringOfNaN() throws JaxenException
160     {
161         XPath xpath = new DOMXPath( "substring(0 div 0, 2)" );
162         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
163         assertEquals("aN", result);
164     }
165  
166   
167     public void testSubstringOfEmptyString() throws JaxenException
168     {
169         XPath xpath = new DOMXPath( "substring('', 2)" );
170         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
171         assertEquals("", result);
172     }
173  
174   
175     public void testSubstringWithNegativeLength() throws JaxenException
176     {
177         XPath xpath = new DOMXPath( "substring('12345', 2, -3)" );
178         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
179         assertEquals("", result);
180     }
181  
182   
183     public void testSubstringWithExcessiveLength() throws JaxenException
184     {
185         XPath xpath = new DOMXPath( "substring('12345', 2, 32)" );
186         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
187         assertEquals("2345", result);
188     }
189  
190   
191     public void testSubstringWithNegativeLength2() throws JaxenException
192     {
193         XPath xpath = new DOMXPath( "substring('12345', 2, -1)" );
194         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
195         assertEquals("", result);
196     }
197  
198   
199     public void testSubstringFunctionRequiresAtLeastTwoArguments()
200       throws JaxenException {
201         
202         XPath xpath = new DOMXPath("substring('a')");
203         
204         try {
205             xpath.selectNodes(doc);
206             fail("Allowed substring function with one argument");
207         }
208         catch (FunctionCallException ex) {
209             assertNotNull(ex.getMessage());
210         }
211         
212     }
213
214     public void testNegativeStartNoLength()
215       throws JaxenException {
216         
217         XPath xpath = new DOMXPath("substring('Hello', -50)");
218         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
219         assertEquals("Hello", result);
220         
221     }
222
223     public void testNegativeStartWithLength()
224       throws JaxenException {
225         
226         XPath xpath = new DOMXPath("substring('Hello', -50, 20)");
227         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
228         assertEquals("", result);
229         
230     }
231
232     public void testSubstringFunctionRequiresAtMostThreeArguments()
233       throws JaxenException {
234         
235         XPath xpath = new DOMXPath("substring('a', 1, 1, 4)");
236         
237         try {
238             xpath.selectNodes(doc);
239             fail("Allowed substring function with four arguments");
240         }
241         catch (FunctionCallException ex) {
242             assertNotNull(ex.getMessage());
243         }
244         
245     }
246
247     public void testStringLengthCountsUnicodeCharactersNotJavaChars()
248       throws JaxenException {
249    
250         XPath xpath = new DOMXPath("substring('A\uD834\uDD00', 1, 2)");
251         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
252         assertEquals("A\uD834\uDD00", result);
253         
254     }
255     
256     
257     public void testStringLengthIndexesUnicodeCharactersNotJavaChars()
258       throws JaxenException {
259    
260         XPath xpath = new DOMXPath("substring('A\uD834\uDD00', 3, 1)");
261         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
262         assertEquals("", result);
263         
264     }
265     
266     
267     public void testStringLengthIndexesAndCountsUnicodeCharactersNotJavaChars()
268       throws JaxenException {
269    
270         XPath xpath = new DOMXPath("substring('A\uD834\uDD00123', 3, 2)");
271         String JavaDoc result = (String JavaDoc) xpath.evaluate( doc );
272         assertEquals("12", result);
273         
274     }
275     
276     
277 }
278
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