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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.jxpath;
18  
19  import java.util.Iterator;
20  import java.util.List;
21  
22  import org.w3c.dom.Element;
23  
24  /**
25   * Test BasicNodeSet
26   * 
27   * @author Matt Benson
28   * @version $Revision: 658784 $ $Date: 2007-12-10 15:15:27 -0600 (Mon, 10 Dec
29   *          2007) $
30   */
31  public class BasicNodeSetTest extends JXPathTestCase {
32  
33      /** JXPathContext */
34      protected JXPathContext context;
35  
36      /** BasicNodeSet */
37      protected BasicNodeSet nodeSet;
38  
39      protected void setUp() throws Exception {
40          super.setUp();
41          context = JXPathContext.newContext(new TestMixedModelBean());
42          nodeSet = new BasicNodeSet();
43      }
44  
45      /**
46       * Add the pointers for the specified path to <code>nodeSet</code>.
47       * 
48       * @param xpath
49       */
50      protected void addPointers(String xpath) {
51          for (Iterator iter = context.iteratePointers(xpath); iter.hasNext();) {
52              nodeSet.add((Pointer) iter.next());
53          }
54          nudge();
55      }
56  
57      /**
58       * Remove the pointers for the specified path from <code>nodeSet</code>.
59       * 
60       * @param xpath
61       */
62      protected void removePointers(String xpath) {
63          for (Iterator iter = context.iteratePointers(xpath); iter.hasNext();) {
64              nodeSet.remove((Pointer) iter.next());
65          }
66          nudge();
67      }
68  
69      /**
70       * "Nudge" the nodeSet.
71       */
72      protected void nudge() {
73          nodeSet.getPointers();
74          nodeSet.getValues();
75          nodeSet.getNodes();
76      }
77  
78      /**
79       * Test adding pointers.
80       */
81      public void testAdd() {
82          addPointers("/bean/integers");
83          assertEquals(nodeSet.getPointers().toString(), list("/bean/integers[1]",
84                  "/bean/integers[2]", "/bean/integers[3]", "/bean/integers[4]").toString());
85          assertEquals(list(new Integer(1), new Integer(2), new Integer(3),
86                  new Integer(4)), nodeSet.getValues());
87          assertEquals(list(new Integer(1), new Integer(2), new Integer(3),
88                  new Integer(4)), nodeSet.getNodes());
89      }
90  
91      /**
92       * Test removing a pointer.
93       */
94      public void testRemove() {
95          addPointers("/bean/integers");
96          removePointers("/bean/integers[4]");
97          assertEquals(list("/bean/integers[1]", "/bean/integers[2]", "/bean/integers[3]")
98                  .toString(), nodeSet.getPointers().toString());
99          assertEquals(list(new Integer(1), new Integer(2), new Integer(3)),
100                 nodeSet.getValues());
101         assertEquals(list(new Integer(1), new Integer(2), new Integer(3)),
102                 nodeSet.getNodes());
103     }
104 
105     /**
106      * Demonstrate when nodes != values:  in XML models.
107      */
108     public void testNodes() {
109         addPointers("/document/vendor/contact");
110         assertEquals(list("/document/vendor[1]/contact[1]",
111                 "/document/vendor[1]/contact[2]",
112                 "/document/vendor[1]/contact[3]",
113                 "/document/vendor[1]/contact[4]").toString(),
114                 nodeSet.getPointers().toString());
115         assertEquals(list("John", "Jack", "Jim", "Jack Black"),
116                 nodeSet.getValues());
117         assertElementNames(list("contact", "contact", "contact", "contact"), nodeSet.getNodes());
118         assertElementValues(list("John", "Jack", "Jim", "Jack Black"), nodeSet.getNodes());
119     }
120 
121     /**
122      * Do assertions on DOM element names.
123      * @param names List of expected names
124      * @param elements List of DOM elements
125      */
126     protected void assertElementNames(List names, List elements) {
127         assertEquals(names.size(), elements.size());
128         Iterator nameIter = names.iterator();
129         Iterator elementIter = elements.iterator();
130         while (elementIter.hasNext()) {
131             assertEquals(nameIter.next(), ((Element) elementIter.next()).getTagName());
132         }
133     }
134 
135     /**
136      * Do assertions on DOM element values.
137      * @param values List of expected values
138      * @param elements List of DOM elements
139      */
140     protected void assertElementValues(List values, List elements) {
141         assertEquals(values.size(), elements.size());
142         Iterator valueIter = values.iterator();
143         Iterator elementIter = elements.iterator();
144         while (elementIter.hasNext()) {
145             assertEquals(valueIter.next(), ((Element) elementIter.next()).getFirstChild().getNodeValue());
146         }
147         
148     }
149 }