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48 package org.jaxen.test;
49
50 import javax.xml.parsers.DocumentBuilder;
51 import javax.xml.parsers.DocumentBuilderFactory;
52 import javax.xml.parsers.ParserConfigurationException;
53
54 import junit.framework.TestCase;
55
56 import org.jaxen.BaseXPath;
57 import org.jaxen.FunctionCallException;
58 import org.jaxen.JaxenException;
59 import org.jaxen.XPath;
60 import org.jaxen.dom.DOMXPath;
61 import org.w3c.dom.Document;
62
63 /***
64 * @author Elliotte Rusty Harold
65 *
66 */
67 public class StringLengthTest extends TestCase {
68
69 private Document doc;
70
71 public void setUp() throws ParserConfigurationException
72 {
73 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
74 factory.setNamespaceAware(true);
75 DocumentBuilder builder = factory.newDocumentBuilder();
76 doc = builder.newDocument();
77 doc.appendChild(doc.createElement("root"));
78 }
79
80
81 public StringLengthTest(String name) {
82 super(name);
83 }
84
85 public void testStringLengthOfNumber() throws JaxenException
86 {
87 XPath xpath = new DOMXPath( "string-length(3)" );
88 Double result = (Double) xpath.evaluate( doc );
89 assertEquals(1, result.intValue());
90 }
91
92 public void testStringLengthOfEmptyString() throws JaxenException
93 {
94 XPath xpath = new DOMXPath( "string-length('')" );
95 Double result = (Double) xpath.evaluate( doc );
96 assertEquals(0, result.intValue());
97 }
98
99 public void testStringLengthOfString() throws JaxenException
100 {
101 XPath xpath = new DOMXPath( "string-length('0123456789')" );
102 Double result = (Double) xpath.evaluate( doc );
103 assertEquals(10, result.intValue());
104 }
105
106 public void testStringLengthFunctionOperatesOnContextNode()
107 throws JaxenException {
108
109 BaseXPath xpath = new DOMXPath("string-length()");
110 Double result = (Double) xpath.evaluate( doc );
111 assertEquals(0, result.intValue());
112
113 }
114
115 public void testStringLengthFunctionCountsUnicodeCharactersNotJavaChars()
116 throws JaxenException {
117
118 BaseXPath xpath = new DOMXPath("string-length('\uD834\uDD00')");
119 Double result = (Double) xpath.evaluate( doc );
120 assertEquals(1, result.intValue());
121
122 }
123
124 public void testStringLengthFunctionWithMalformedString()
125 throws JaxenException {
126
127 BaseXPath xpath = new DOMXPath("string-length('\uD834A\uDD00')");
128 try {
129 xpath.evaluate( doc );
130 fail("Allowed Malformed string");
131 }
132 catch (FunctionCallException ex) {
133 assertNotNull(ex.getMessage());
134 }
135
136 }
137
138 public void testStringLengthFunctionRequiresExactlyOneArgument()
139 throws JaxenException {
140
141 BaseXPath xpath = new DOMXPath("string-length('', '')");
142
143 try {
144 xpath.selectNodes(doc);
145 fail("Allowed string-length function with two arguments");
146 }
147 catch (FunctionCallException ex) {
148 assertNotNull(ex.getMessage());
149 }
150
151 }
152
153 }