1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
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.FunctionCallException;
57 import org.jaxen.JaxenException;
58 import org.jaxen.XPath;
59 import org.jaxen.dom.DOMXPath;
60 import org.w3c.dom.Document;
61
62 /***
63 * @author Elliotte Rusty Harold
64 *
65 */
66 public class RoundTest extends TestCase {
67
68 private Document doc;
69
70 public void setUp() throws ParserConfigurationException
71 {
72 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
73 factory.setNamespaceAware(true);
74 DocumentBuilder builder = factory.newDocumentBuilder();
75 doc = builder.newDocument();
76 org.w3c.dom.Element a = doc.createElementNS("", "a");
77 doc.appendChild(a);
78 }
79
80
81 public RoundTest(String name) {
82 super(name);
83 }
84
85
86 public void testRound() throws JaxenException {
87
88 XPath xpath = new DOMXPath("round(1.5)");
89
90 Object result = xpath.evaluate(doc);
91 assertEquals(2, ((Double) result).doubleValue(), 0.0001);
92
93 }
94
95 public void testNegativeRound() throws JaxenException {
96
97 XPath xpath = new DOMXPath("round(-1.5)");
98
99 Object result = xpath.evaluate(doc);
100 assertEquals(-1, ((Double) result).doubleValue(), 0.0001);
101
102 }
103
104 public void testNaNRoundIsNaN() throws JaxenException {
105 XPath xpath = new DOMXPath("round(1.0 div 0.0 - 2.0 div 0.0)");
106 double result = ((Double) xpath.evaluate(doc)).doubleValue();
107 assertTrue(Double.isNaN(result));
108 }
109
110 public void testRoundFunctionRequiresAtLeastOneArgument()
111 throws JaxenException {
112
113 XPath xpath = new DOMXPath("round()");
114
115 try {
116 xpath.selectNodes(doc);
117 fail("Allowed round function with no arguments");
118 }
119 catch (FunctionCallException ex) {
120 assertNotNull(ex.getMessage());
121 }
122
123 }
124
125 public void testRoundFunctionRequiresAtMostOneArgument()
126 throws JaxenException {
127
128 XPath xpath = new DOMXPath("round(2.2, 1.2)");
129
130 try {
131 xpath.selectNodes(doc);
132 fail("Allowed round function with two arguments");
133 }
134 catch (FunctionCallException ex) {
135 assertNotNull(ex.getMessage());
136 }
137
138 }
139
140 }