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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.dom.DOMXPath;
60 import org.w3c.dom.Document;
61
62 /***
63 * @author Elliotte Rusty Harold
64 *
65 */
66 public class CeilingTest 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 CeilingTest(String name) {
82 super(name);
83 }
84
85
86
87 public void testCeiling() throws JaxenException {
88
89 BaseXPath xpath = new DOMXPath("ceiling(1.5)");
90
91 Object result = xpath.evaluate(doc);
92 assertEquals(2, ((Double) result).doubleValue(), 0.0001);
93
94 }
95
96 public void testNegativeCeiling() throws JaxenException {
97
98 BaseXPath xpath = new DOMXPath("ceiling(-1.5)");
99
100 Object result = xpath.evaluate(doc);
101 assertEquals(-1, ((Double) result).doubleValue(), 0.0001);
102
103 }
104
105 public void testNaNCeilingIsNaN() throws JaxenException {
106 BaseXPath xpath = new DOMXPath("ceiling(1.0 div 0.0 - 2.0 div 0.0)");
107 double result = ((Double) xpath.evaluate(doc)).doubleValue();
108 assertTrue(Double.isNaN(result));
109 }
110
111 public void testCeilingFunctionRequiresAtLeastOneArgument()
112 throws JaxenException {
113
114 BaseXPath xpath = new DOMXPath("ceiling()");
115
116 try {
117 xpath.selectNodes(doc);
118 fail("Allowed ceiling function with no arguments");
119 }
120 catch (FunctionCallException ex) {
121 assertNotNull(ex.getMessage());
122 }
123
124 }
125
126 public void testCeilingFunctionRequiresAtMostOneArgument()
127 throws JaxenException {
128
129 BaseXPath xpath = new DOMXPath("ceiling(2.2, 1.2)");
130
131 try {
132 xpath.selectNodes(doc);
133 fail("Allowed ceiling function with two arguments");
134 }
135 catch (FunctionCallException ex) {
136 assertNotNull(ex.getMessage());
137 }
138
139 }
140
141 }