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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 java.util.List JavaDoc;
65
66 import javax.xml.parsers.DocumentBuilder JavaDoc;
67 import javax.xml.parsers.DocumentBuilderFactory JavaDoc;
68 import javax.xml.parsers.ParserConfigurationException JavaDoc;
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 JavaDoc;
77 import org.w3c.dom.Element JavaDoc;
78
79 /**
80  * @author Elliotte Rusty Harold
81  *
82  */

83 public class LangTest extends TestCase {
84
85     private Document JavaDoc doc;
86     private DocumentBuilder JavaDoc builder;
87     
88     public void setUp() throws ParserConfigurationException JavaDoc
89     {
90         DocumentBuilderFactory JavaDoc factory = DocumentBuilderFactory.newInstance();
91         factory.setNamespaceAware(true);
92         builder = factory.newDocumentBuilder();
93         doc = builder.newDocument();
94     }
95
96     public LangTest(String JavaDoc name) {
97         super(name);
98     }
99
100     public void testLangFunction()
101       throws JaxenException {
102         
103         BaseXPath xpath = new DOMXPath("//*[lang('en')]");
104         Element JavaDoc a = doc.createElementNS("", "a");
105         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
110         Element JavaDoc x3 = doc.createElementNS("", "x");
111         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
132         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
137         Element JavaDoc x3 = doc.createElementNS("", "x");
138         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
156         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
161         Element JavaDoc x3 = doc.createElementNS("", "x");
162         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
183         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
188         Element JavaDoc x3 = doc.createElementNS("", "x");
189         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
209         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
214         Element JavaDoc x3 = doc.createElementNS("", "x");
215         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
233         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
238         Element JavaDoc x3 = doc.createElementNS("", "x");
239         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
258         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
263         Element JavaDoc x3 = doc.createElementNS("", "x");
264         Element JavaDoc 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 JavaDoc 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 JavaDoc a = doc.createElementNS("", "a");
284         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
289         Element JavaDoc x3 = doc.createElementNS("", "x");
290         Element JavaDoc 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 JavaDoc result = (Boolean JavaDoc) 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 JavaDoc a = doc.createElementNS("", "a");
309         Element JavaDoc 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 JavaDoc x2 = doc.createElementNS("", "x");
314         Element JavaDoc x3 = doc.createElementNS("", "x");
315         Element JavaDoc 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 JavaDoc 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 JavaDoc 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 JavaDoc 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 }
362
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