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.util.List;
65  
66  import javax.xml.parsers.DocumentBuilder;
67  import javax.xml.parsers.DocumentBuilderFactory;
68  import javax.xml.parsers.ParserConfigurationException;
69  
70  import junit.framework.TestCase;
71  
72  import org.jaxen.BaseXPath;
73  import org.jaxen.FunctionCallException;
74  import org.jaxen.JaxenException;
75  import org.jaxen.dom.DOMXPath;
76  import org.w3c.dom.Document;
77  import org.w3c.dom.Element;
78  
79  /***
80   * @author Elliotte Rusty Harold
81   *
82   */
83  public class LangTest extends TestCase {
84  
85      private Document doc;
86      private DocumentBuilder builder;
87      
88      public void setUp() throws ParserConfigurationException
89      {
90          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
91          factory.setNamespaceAware(true);
92          builder = factory.newDocumentBuilder();
93          doc = builder.newDocument();
94      }
95  
96      public LangTest(String name) {
97          super(name);
98      }
99  
100     public void testLangFunction() 
101       throws JaxenException {
102         
103         BaseXPath xpath = new DOMXPath("//*[lang('en')]");
104         Element a = doc.createElementNS("", "a");
105         Element b = doc.createElementNS("", "b");
106         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "en");
107         doc.appendChild(a);
108         a.appendChild(b);
109         Element x2 = doc.createElementNS("", "x");
110         Element x3 = doc.createElementNS("", "x");
111         Element x4 = doc.createElementNS("", "x");
112         a.appendChild(x4);
113         b.appendChild(x2);
114         b.appendChild(x3);
115         x2.appendChild(doc.createTextNode("2"));
116         x3.appendChild(doc.createTextNode("3"));
117         x4.appendChild(doc.createTextNode("4"));
118         
119         List result = xpath.selectNodes(doc);
120         assertEquals(3, result.size());
121         assertEquals(b, result.get(0));
122         assertEquals(x2, result.get(1));
123         assertEquals(x3, result.get(2));
124         
125     }    
126 
127     public void testLangFunctionSelectsNothing() 
128       throws JaxenException {
129         
130         BaseXPath xpath = new DOMXPath("//*[lang('fr')]");
131         Element a = doc.createElementNS("", "a");
132         Element b = doc.createElementNS("", "b");
133         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "en");
134         doc.appendChild(a);
135         a.appendChild(b);
136         Element x2 = doc.createElementNS("", "x");
137         Element x3 = doc.createElementNS("", "x");
138         Element x4 = doc.createElementNS("", "x");
139         a.appendChild(x4);
140         b.appendChild(x2);
141         b.appendChild(x3);
142         x2.appendChild(doc.createTextNode("2"));
143         x3.appendChild(doc.createTextNode("3"));
144         x4.appendChild(doc.createTextNode("4"));
145         
146         List result = xpath.selectNodes(doc);
147         assertEquals(0, result.size());
148         
149     }    
150 
151     public void testLangFunctionSelectsSubcode() 
152       throws JaxenException {
153         
154         BaseXPath xpath = new DOMXPath("//*[lang('fr')]");
155         Element a = doc.createElementNS("", "a");
156         Element b = doc.createElementNS("", "b");
157         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
158         doc.appendChild(a);
159         a.appendChild(b);
160         Element x2 = doc.createElementNS("", "x");
161         Element x3 = doc.createElementNS("", "x");
162         Element x4 = doc.createElementNS("", "x");
163         a.appendChild(x4);
164         b.appendChild(x2);
165         b.appendChild(x3);
166         x2.appendChild(doc.createTextNode("2"));
167         x3.appendChild(doc.createTextNode("3"));
168         x4.appendChild(doc.createTextNode("4"));
169         
170         List result = xpath.selectNodes(doc);
171         assertEquals(3, result.size());
172         assertEquals(b, result.get(0));
173         assertEquals(x2, result.get(1));
174         assertEquals(x3, result.get(2));
175         
176     }    
177 
178     public void testHyphenRequiredAtEnd() 
179       throws JaxenException {
180         
181         BaseXPath xpath = new DOMXPath("//*[lang('f')]");
182         Element a = doc.createElementNS("", "a");
183         Element b = doc.createElementNS("", "b");
184         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
185         doc.appendChild(a);
186         a.appendChild(b);
187         Element x2 = doc.createElementNS("", "x");
188         Element x3 = doc.createElementNS("", "x");
189         Element x4 = doc.createElementNS("", "x");
190         a.appendChild(x4);
191         b.appendChild(x2);
192         b.appendChild(x3);
193         x2.appendChild(doc.createTextNode("2"));
194         x3.appendChild(doc.createTextNode("3"));
195         x4.appendChild(doc.createTextNode("4"));
196         
197         List result = xpath.selectNodes(doc);
198         assertEquals(0, result.size());
199         
200     }    
201 
202     public void testLangFunctionSelectsEmptyNodeSet() 
203       throws JaxenException {
204         
205         BaseXPath xpath = new DOMXPath("//*[lang(d)]");
206         // This node-set will be empty. Therefore it's the same as the
207         // empty string. Therefore it matches all languages.
208         Element a = doc.createElementNS("", "a");
209         Element b = doc.createElementNS("", "b");
210         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
211         doc.appendChild(a);
212         a.appendChild(b);
213         Element x2 = doc.createElementNS("", "x");
214         Element x3 = doc.createElementNS("", "x");
215         Element x4 = doc.createElementNS("", "x");
216         a.appendChild(x4);
217         b.appendChild(x2);
218         b.appendChild(x3);
219         x2.appendChild(doc.createTextNode("2"));
220         x3.appendChild(doc.createTextNode("3"));
221         x4.appendChild(doc.createTextNode("4"));
222         
223         List result = xpath.selectNodes(doc);
224         assertEquals(0, result.size());
225         
226     }    
227 
228     public void testLangFunctionSelectsNonEmptyNodeSet() 
229       throws JaxenException {
230         
231         BaseXPath xpath = new DOMXPath("//*[lang(x)]");
232         Element a = doc.createElementNS("", "a");
233         Element b = doc.createElementNS("", "b");
234         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
235         doc.appendChild(a);
236         a.appendChild(b);
237         Element x2 = doc.createElementNS("", "x");
238         Element x3 = doc.createElementNS("", "x");
239         Element x4 = doc.createElementNS("", "x");
240         a.appendChild(x4);
241         b.appendChild(x2);
242         b.appendChild(x3);
243         x2.appendChild(doc.createTextNode("fr"));
244         x3.appendChild(doc.createTextNode("3"));
245         x4.appendChild(doc.createTextNode("4"));
246         
247         List result = xpath.selectNodes(doc);
248         assertEquals(1, result.size());
249         assertEquals(b, result.get(0));
250         
251     }    
252 
253     public void testLangFunctionAppliedToNonElement() 
254       throws JaxenException {
255         
256         BaseXPath xpath = new DOMXPath("//text()[lang('fr')]");
257         Element a = doc.createElementNS("", "a");
258         Element b = doc.createElementNS("", "b");
259         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
260         doc.appendChild(a);
261         a.appendChild(b);
262         Element x2 = doc.createElementNS("", "x");
263         Element x3 = doc.createElementNS("", "x");
264         Element x4 = doc.createElementNS("", "x");
265         a.appendChild(x4);
266         b.appendChild(x2);
267         b.appendChild(x3);
268         x2.appendChild(doc.createTextNode("fr"));
269         x3.appendChild(doc.createTextNode("3"));
270         x4.appendChild(doc.createTextNode("4"));
271         
272         List result = xpath.selectNodes(doc);
273         assertEquals(2, result.size());
274         assertEquals(x2.getFirstChild(), result.get(0));
275         assertEquals(x3.getFirstChild(), result.get(1));
276         
277     }    
278 
279     public void testLangFunctionAppliedToDocument() 
280       throws JaxenException {
281         
282         BaseXPath xpath = new DOMXPath("lang('fr')");
283         Element a = doc.createElementNS("", "a");
284         Element b = doc.createElementNS("", "b");
285         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
286         doc.appendChild(a);
287         a.appendChild(b);
288         Element x2 = doc.createElementNS("", "x");
289         Element x3 = doc.createElementNS("", "x");
290         Element x4 = doc.createElementNS("", "x");
291         a.appendChild(x4);
292         b.appendChild(x2);
293         b.appendChild(x3);
294         x2.appendChild(doc.createTextNode("fr"));
295         x3.appendChild(doc.createTextNode("3"));
296         x4.appendChild(doc.createTextNode("4"));
297         
298         Boolean result = (Boolean) xpath.evaluate(doc);
299         assertEquals(Boolean.FALSE, result);
300         
301     }    
302 
303     public void testLangFunctionSelectsNumber() 
304       throws JaxenException {
305         
306         BaseXPath xpath = new DOMXPath("//*[lang(3)]");
307         
308         Element a = doc.createElementNS("", "a");
309         Element b = doc.createElementNS("", "b");
310         b.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "fr-CA");
311         doc.appendChild(a);
312         a.appendChild(b);
313         Element x2 = doc.createElementNS("", "x");
314         Element x3 = doc.createElementNS("", "x");
315         Element x4 = doc.createElementNS("", "x");
316         a.appendChild(x4);
317         b.appendChild(x2);
318         b.appendChild(x3);
319         x2.appendChild(doc.createTextNode("2"));
320         x3.appendChild(doc.createTextNode("3"));
321         x4.appendChild(doc.createTextNode("4"));
322         
323         List result = xpath.selectNodes(doc);
324         assertEquals(0, result.size());
325         
326     }    
327 
328     public void testLangFunctionRequiresOneArgument() 
329       throws JaxenException {
330         
331         try {
332             BaseXPath xpath = new DOMXPath("lang()");
333             org.w3c.dom.Element a = doc.createElementNS("", "a");
334             doc.appendChild(a);
335             xpath.selectNodes(doc);
336             fail("Allowed empty lang() function");
337         }
338         catch (FunctionCallException success) {
339             assertNotNull(success.getMessage());
340         }
341         
342     }    
343 
344     public void testLangFunctionRequiresAtMostOneArgument() 
345       throws JaxenException {
346         
347         try {
348             BaseXPath xpath = new DOMXPath("lang('en', 'fr')");
349             org.w3c.dom.Element a = doc.createElementNS("", "a");
350             doc.appendChild(a);
351             xpath.selectNodes(doc);
352             fail("Allowed empty lang() function");
353         }
354         catch (FunctionCallException success) {
355             assertNotNull(success.getMessage());
356         }
357         
358     }    
359 
360 
361 }