1   /*
2    * $Id: JXPathExtractorTestCase.java 11236 2008-03-06 23:48:23Z tcarlson $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.transformers.xml;
12  
13  import org.mule.module.xml.transformer.JXPathExtractor;
14  import org.mule.tck.AbstractMuleTestCase;
15  
16  import java.util.List;
17  
18  public class JXPathExtractorTestCase extends AbstractMuleTestCase
19  {
20  
21      protected static final String TEST_XML_MULTI_RESULTS = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
22                                                             + "<root>" + "<node>value1</node>"
23                                                             + "<node>value2</node>" + "<node>value3</node>"
24                                                             + "</root>";
25  
26      protected static final String TEST_XML_MULTI_NESTED_RESULTS = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
27                                                                    + "<root>"
28                                                                    + "<node>"
29                                                                    + "<subnode1>val1</subnode1>"
30                                                                    + "<subnode2>val2</subnode2>"
31                                                                    + "</node>"
32                                                                    + "<node>"
33                                                                    + "<subnode1>val3</subnode1>"
34                                                                    + "<subnode2>val4</subnode2>"
35                                                                    + "</node>"
36                                                                    + "</root>";
37  
38      protected static final String TEST_XML_SINGLE_RESULT = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
39                                                             + "<root>" + "<node>value1</node>" + "</root>";
40  
41      public void testSingeResult() throws Exception
42      {
43          final JXPathExtractor extractor = new JXPathExtractor();
44          final String expression = "/root/node";
45          extractor.setExpression(expression);
46          // just make code coverage tools happy
47          assertEquals("Wrong expression returned.", expression, extractor.getExpression());
48          final Object objResult = extractor.transform(TEST_XML_SINGLE_RESULT);
49          assertNotNull(objResult);
50          String result = (String)objResult;
51          assertEquals("Wrong value extracted.", "value1", result);
52      }
53  
54      public void testMultipleResults() throws Exception
55      {
56          JXPathExtractor extractor = new JXPathExtractor();
57          extractor.setExpression("/root/node");
58          extractor.setSingleResult(false);
59          final Object objResult = extractor.transform(TEST_XML_MULTI_RESULTS);
60          assertNotNull(objResult);
61          List results = (List)objResult;
62          assertEquals("Wrong number of results returned.", 3, results.size());
63          assertEquals("Wrong value returned.", "value1", results.get(0));
64          assertEquals("Wrong value returned.", "value2", results.get(1));
65          assertEquals("Wrong value returned.", "value3", results.get(2));
66      }
67  
68      /**
69       * This xpath expression will internally have DefaultText returned, test there
70       * are no ClassCastExceptions.
71       */
72      public void testMultipleResultsNested() throws Exception
73      {
74          JXPathExtractor extractor = new JXPathExtractor();
75          extractor.setExpression("/root/node[*]/*/text()");
76          extractor.setSingleResult(false);
77          final Object objResult = extractor.transform(TEST_XML_MULTI_NESTED_RESULTS);
78          assertNotNull(objResult);
79          List results = (List)objResult;
80          assertEquals("Wrong number of results returned.", 4, results.size());
81          assertEquals("Wrong value returned.", "val1", results.get(0));
82          assertEquals("Wrong value returned.", "val2", results.get(1));
83          assertEquals("Wrong value returned.", "val3", results.get(2));
84          assertEquals("Wrong value returned.", "val4", results.get(3));
85      }
86  
87  }