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1
61
62 package org.jaxen.function;
63
64 import java.io.IOException  ;
65 import java.io.StringReader ;
66 import java.util.List ;
67
68 import javax.xml.parsers.DocumentBuilder ;
69 import javax.xml.parsers.DocumentBuilderFactory ;
70 import javax.xml.parsers.ParserConfigurationException ;
71
72 import junit.framework.TestCase;
73
74 import org.jaxen.BaseXPath;
75 import org.jaxen.FunctionCallException;
76 import org.jaxen.JaxenException;
77 import org.jaxen.dom.DOMXPath;
78 import org.w3c.dom.Attr ;
79 import org.w3c.dom.Document ;
80 import org.w3c.dom.Element ;
81 import org.xml.sax.InputSource ;
82 import org.xml.sax.SAXException ;
83
84
88 public class IdTest extends TestCase {
89
90 private Document doc;
91 private DocumentBuilder builder;
92
93 public void setUp() throws ParserConfigurationException
94 {
95 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
96 factory.setNamespaceAware(true);
97 builder = factory.newDocumentBuilder();
98 doc = builder.newDocument();
99 }
100
101 public IdTest(String name) {
102 super(name);
103 }
104
105 public void testIDFunctionSelectsNothingInDocumentWithNoIds()
106 throws JaxenException {
107
108 BaseXPath xpath = new DOMXPath("id('p1')");
109 org.w3c.dom.Element a = doc.createElementNS("", "a");
110 org.w3c.dom.Element b = doc.createElementNS("", "b");
111 doc.appendChild(a);
112 a.appendChild(b);
113 org.w3c.dom.Element x2 = doc.createElementNS("", "x");
114 org.w3c.dom.Element x3 = doc.createElementNS("", "x");
115 org.w3c.dom.Element x4 = doc.createElementNS("", "x");
116 a.appendChild(x4);
117 b.appendChild(x2);
118 b.appendChild(x3);
119 x2.appendChild(doc.createTextNode("2"));
120 x3.appendChild(doc.createTextNode("3"));
121 x4.appendChild(doc.createTextNode("4"));
122 Attr id = doc.createAttribute("id");
123 id.setNodeValue("p1");
124 x2.setAttributeNode(id);
125
126 List result = xpath.selectNodes(doc);
127 assertEquals(0, result.size());
128
129 }
130
131 public void testIDFunctionRequiresAtLeastOneArgument()
132 throws JaxenException {
133
134 try {
135 BaseXPath xpath = new DOMXPath("id()");
136 org.w3c.dom.Element a = doc.createElementNS("", "a");
137 doc.appendChild(a);
138 xpath.selectNodes(doc);
139 fail("Allowed empty id() function");
140 }
141 catch (FunctionCallException success) {
142 assertNotNull(success.getMessage());
143 }
144
145 }
146
147 public void testIDFunctionRequiresAtMostOneArgument()
148 throws JaxenException {
149
150 try {
151 BaseXPath xpath = new DOMXPath("id('p', 'q')");
152 org.w3c.dom.Element a = doc.createElementNS("", "a");
153 doc.appendChild(a);
154 xpath.selectNodes(doc);
155 fail("Allowed two-argument id() function");
156 }
157 catch (FunctionCallException success) {
158 assertNotNull(success.getMessage());
159 }
160
161 }
162
163 public void testFindElementById()
164 throws JaxenException, SAXException , IOException {
165
166 BaseXPath xpath = new DOMXPath("id('p1')");
167 String text = "<!DOCTYPE root [<!ATTLIST a id ID #REQUIRED>]><root><a id='p1'/></root>";
168 StringReader reader = new StringReader (text);
169 InputSource in = new InputSource (reader);
170 Document doc = builder.parse(in);
171 List result = xpath.selectNodes(doc);
172 assertEquals(1, result.size());
173 Element a = (Element ) result.get(0);
174 assertEquals("a", a.getNodeName());
175
176 }
177
178 public void testIdReturnsFirstElementWithMatchingId()
179 throws JaxenException, SAXException , IOException {
180
181 BaseXPath xpath = new DOMXPath("id('p1')");
182 String text = "<!DOCTYPE root [<!ATTLIST a id ID #REQUIRED>" +
183 "<!ATTLIST b id ID #REQUIRED>]><root><a id='p1'/><b id='p1'/></root>";
184 StringReader reader = new StringReader (text);
185 InputSource in = new InputSource (reader);
186 Document doc = builder.parse(in);
187 List result = xpath.selectNodes(doc);
188 assertEquals(1, result.size());
189 Element a = (Element ) result.get(0);
190 assertEquals("a", a.getNodeName());
191
192 }
193
194 }
195 |
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