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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
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 testStringLengthWithPrivateUseChars() throws JaxenException
116 {
117 XPath xpath = new DOMXPath( "string-length('ab\uE000\uE001')" );
118 Double result = (Double) xpath.evaluate( doc );
119 assertEquals(4, result.intValue());
120 }
121
122 public void testStringLengthFunctionCountsUnicodeCharactersNotJavaChars()
123 throws JaxenException {
124
125 BaseXPath xpath = new DOMXPath("string-length('\uD834\uDD00')");
126 Double result = (Double) xpath.evaluate( doc );
127 assertEquals(1, result.intValue());
128
129 }
130
131 public void testStringLengthFunctionWithMalformedString()
132 throws JaxenException {
133
134 BaseXPath xpath = new DOMXPath("string-length('\uD834A\uDD00')");
135 try {
136 xpath.evaluate( doc );
137 fail("Allowed Malformed string");
138 }
139 catch (FunctionCallException ex) {
140 assertNotNull(ex.getMessage());
141 }
142
143 }
144
145 public void testStringLengthFunctionRequiresExactlyOneArgument()
146 throws JaxenException {
147
148 BaseXPath xpath = new DOMXPath("string-length('', '')");
149
150 try {
151 xpath.selectNodes(doc);
152 fail("Allowed string-length function with two arguments");
153 }
154 catch (FunctionCallException ex) {
155 assertNotNull(ex.getMessage());
156 }
157
158 }
159
160 }