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1
61
62 package org.jaxen.function;
63
64 import javax.xml.parsers.DocumentBuilder  ;
65 import javax.xml.parsers.DocumentBuilderFactory ;
66 import javax.xml.parsers.ParserConfigurationException ;
67
68 import junit.framework.TestCase;
69
70 import org.jaxen.BaseXPath;
71 import org.jaxen.FunctionCallException;
72 import org.jaxen.JaxenException;
73 import org.jaxen.dom.DOMXPath;
74 import org.w3c.dom.Document ;
75
76
80 public class RoundTest extends TestCase {
81
82 private Document doc;
83
84 public void setUp() throws ParserConfigurationException
85 {
86 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
87 factory.setNamespaceAware(true);
88 DocumentBuilder builder = factory.newDocumentBuilder();
89 doc = builder.newDocument();
90 org.w3c.dom.Element a = doc.createElementNS("", "a");
91 doc.appendChild(a);
92 }
93
94
95 public RoundTest(String name) {
96 super(name);
97 }
98
99
100 public void testRound() throws JaxenException {
101
102 BaseXPath xpath = new DOMXPath("round(1.5)");
103
104 Object result = xpath.evaluate(doc);
105 assertEquals(2, ((Double ) result).doubleValue(), 0.0001);
106
107 }
108
109 public void testNegativeRound() throws JaxenException {
110
111 BaseXPath xpath = new DOMXPath("round(-1.5)");
112
113 Object result = xpath.evaluate(doc);
114 assertEquals(-1, ((Double ) result).doubleValue(), 0.0001);
115
116 }
117
118 public void testNaNRoundIsNaN() throws JaxenException {
119 BaseXPath xpath = new DOMXPath("round(1.0 div 0.0 - 2.0 div 0.0)");
120 double result = ((Double ) xpath.evaluate(doc)).doubleValue();
121 assertTrue(Double.isNaN(result));
122 }
123
124 public void testRoundFunctionRequiresAtLeastOneArgument()
125 throws JaxenException {
126
127 BaseXPath xpath = new DOMXPath("round()");
128
129 try {
130 xpath.selectNodes(doc);
131 fail("Allowed round function with no arguments");
132 }
133 catch (FunctionCallException ex) {
134 assertNotNull(ex.getMessage());
135 }
136
137 }
138
139 public void testRoundFunctionRequiresAtMostOneArgument()
140 throws JaxenException {
141
142 BaseXPath xpath = new DOMXPath("round(2.2, 1.2)");
143
144 try {
145 xpath.selectNodes(doc);
146 fail("Allowed round function with two arguments");
147 }
148 catch (FunctionCallException ex) {
149 assertNotNull(ex.getMessage());
150 }
151
152 }
153
154 }
155 |
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