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1
61
62 package org.jaxen.function;
63
64 import java.util.List  ;
65
66 import javax.xml.parsers.DocumentBuilder ;
67 import javax.xml.parsers.DocumentBuilderFactory ;
68 import javax.xml.parsers.ParserConfigurationException ;
69
70 import junit.framework.TestCase;
71
72 import org.jaxen.BaseXPath;
73 import org.jaxen.FunctionCallException;
74 import org.jaxen.JaxenException;
75 import org.jaxen.dom.DOMXPath;
76 import org.w3c.dom.Document ;
77
78
82 public class StringTest extends TestCase {
83
84 private Document doc;
85
86 public void setUp() throws ParserConfigurationException
87 {
88 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
89 factory.setNamespaceAware(true);
90 DocumentBuilder builder = factory.newDocumentBuilder();
91 doc = builder.newDocument();
92 }
93
94
95 public StringTest(String name) {
96 super(name);
97 }
98
99 public void testStringFunctionOperatesOnFirstNodeInDocumentOrder()
101 throws JaxenException {
102
103 BaseXPath xpath = new DOMXPath("string(//x)");
104 org.w3c.dom.Element a = doc.createElementNS("", "a");
105 org.w3c.dom.Element b = doc.createElementNS("", "b");
106 doc.appendChild(a);
107 a.appendChild(b);
108 org.w3c.dom.Element x2 = doc.createElementNS("", "x");
109 org.w3c.dom.Element x3 = doc.createElementNS("", "x");
110 org.w3c.dom.Element x4 = doc.createElementNS("", "x");
111 a.appendChild(x4);
112 b.appendChild(x2);
113 b.appendChild(x3);
114 x2.appendChild(doc.createTextNode("2"));
115 x3.appendChild(doc.createTextNode("3"));
116 x4.appendChild(doc.createTextNode("4"));
117
118 List result = xpath.selectNodes(doc);
119 assertEquals(1, result.size());
120 assertEquals("2", result.get(0));
121
122 }
123
124 public void testSmallNumbersDontUseExponentialNotation() throws JaxenException {
125 BaseXPath xpath = new DOMXPath("string(0.0000003)");
126 String result = (String ) xpath.evaluate(null);
127 assertEquals("0.0000003", result);
128 }
129
130 public void testBigNumbersDontUseExponentialNotation() throws JaxenException {
131 BaseXPath xpath = new DOMXPath("string(100000000.5)");
132 String result = (String ) xpath.evaluate(null);
133 assertEquals("100000000.5", result);
134 }
135
136 public void testStringOfInfinity() throws JaxenException {
137 BaseXPath xpath = new DOMXPath("string(1 div 0)");
138 String result = (String ) xpath.evaluate(null);
139 assertEquals("Infinity", result);
140 }
141
142 public void testStringOfNegativeInfinity() throws JaxenException {
143 BaseXPath xpath = new DOMXPath("string(-1 div 0)");
144 String result = (String ) xpath.evaluate(null);
145 assertEquals("-Infinity", result);
146 }
147
148 public void testStringOfNegativeZero() throws JaxenException {
149 BaseXPath xpath = new DOMXPath("string(-0)");
150 String result = (String ) xpath.evaluate(null);
151 assertEquals("0", result);
152 }
153
154 public void testIntegersAreFormattedAsInts() throws JaxenException {
155 BaseXPath xpath = new DOMXPath("string(12)");
156 String result = (String ) xpath.evaluate(null);
157 assertEquals("12", result);
158 }
159
160 public void testStringFunctionRequiresAtMostOneArgument()
161 throws JaxenException {
162
163 BaseXPath xpath = new DOMXPath("string('a', 1)");
164
165 try {
166 xpath.selectNodes(doc);
167 fail("Allowed string function with two arguments");
168 }
169 catch (FunctionCallException ex) {
170 assertNotNull(ex.getMessage());
171 }
172
173 }
174 }
175 |
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