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64 package org.jaxen;
65
66 import java.io.ByteArrayOutputStream;
67 import java.io.IOException;
68 import java.io.NotSerializableException;
69 import java.io.ObjectOutputStream;
70
71 import javax.xml.parsers.DocumentBuilderFactory;
72 import javax.xml.parsers.ParserConfigurationException;
73
74 import org.jaxen.dom.DOMXPath;
75 import org.w3c.dom.Document;
76 import org.w3c.dom.Element;
77
78 import junit.framework.TestCase;
79
80 /***
81 * <p>
82 * Test for function context.
83 * </p>
84 *
85 * @author Elliotte Rusty Harold
86 * @version 1.1b4
87 *
88 */
89 public class FunctionContextTest extends TestCase
90 {
91
92 private Document doc;
93
94 public void setUp() throws ParserConfigurationException {
95
96 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
97 factory.setNamespaceAware(true);
98 doc = factory.newDocumentBuilder().newDocument();
99 Element root = doc.createElementNS("http://www.example.org/", "root");
100 doc.appendChild(root);
101 root.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns", "http://www.example.org/");
102
103 }
104
105 public void testJAXEN50() throws JaxenException {
106
107 DOMXPath xpath = new DOMXPath("true()");
108
109 SimpleNamespaceContext nsContext = new SimpleNamespaceContext();
110
111 nsContext.addElementNamespaces(xpath.getNavigator(), doc);
112 xpath.setNamespaceContext(nsContext);
113
114 boolean result = xpath.booleanValueOf(doc);
115 assertTrue(result);
116
117 }
118
119 public void testUnresolvableFunction() throws JaxenException {
120
121 DOMXPath xpath = new DOMXPath("nonesuch()");
122
123 try {
124 xpath.evaluate(doc);
125 fail("Evaluated nonexistent function");
126 }
127 catch (UnresolvableException ex) {
128 assertNotNull(ex.getMessage());
129 }
130
131 }
132
133 public void testUnresolvableFunctionExceptionMessage() throws JaxenException {
134
135 DOMXPath xpath = new DOMXPath("nonesuch()");
136
137 try {
138 xpath.evaluate(doc);
139 fail("Evaluated nonexistent function");
140 }
141 catch (UnresolvableException ex) {
142 assertEquals(-1, ex.getMessage().indexOf(':'));
143 }
144
145 }
146
147 public void testGetFunctionContext() throws JaxenException {
148 DOMXPath xpath = new DOMXPath("/root/child");
149 assertNotNull(xpath.getFunctionContext());
150 }
151
152 public void testSerializeFunctionContext() throws JaxenException, IOException {
153
154 DOMXPath xpath = new DOMXPath("/root/child");
155 FunctionContext context = xpath.getFunctionContext();
156 ByteArrayOutputStream out = new ByteArrayOutputStream();
157 ObjectOutputStream oout = new ObjectOutputStream(out);
158 try {
159 oout.writeObject(context);
160 fail("serialized function context");
161 }
162 catch (NotSerializableException ex) {
163 assertNotNull(ex.getMessage());
164 }
165
166 }
167
168 }