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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 FloorTest 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 FloorTest(String name) {
82 super(name);
83 }
84
85
86
87 public void testFloor() throws JaxenException {
88
89 BaseXPath xpath = new DOMXPath("floor(1.5)");
90
91 Object result = xpath.evaluate(doc);
92 assertEquals(1, ((Double) result).doubleValue(), 0.0001);
93
94 }
95
96 public void testNegativeFloor() throws JaxenException {
97
98 BaseXPath xpath = new DOMXPath("floor(-1.5)");
99
100 Object result = xpath.evaluate(doc);
101 assertEquals(-2, ((Double) result).doubleValue(), 0.0001);
102
103 }
104
105 public void testNaNFloorIsNaN() throws JaxenException {
106 BaseXPath xpath = new DOMXPath("floor(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 testInfFloorIsInf() throws JaxenException {
112 BaseXPath xpath = new DOMXPath("floor(1.0 div 0.0)");
113 double result = ((Double) xpath.evaluate(doc)).doubleValue();
114 assertTrue(Double.isInfinite(result));
115 assertTrue(result > 0);
116 }
117
118 public void testNegativeInfFloorIsNegativeInf() throws JaxenException {
119 BaseXPath xpath = new DOMXPath("floor(-1.0 div 0.0)");
120 double result = ((Double) xpath.evaluate(doc)).doubleValue();
121 assertTrue(Double.isInfinite(result));
122 assertTrue(result < 0);
123 }
124
125 public void testFloorFunctionRequiresAtLeastArgument()
126 throws JaxenException {
127
128 BaseXPath xpath = new DOMXPath("floor()");
129
130 try {
131 xpath.selectNodes(doc);
132 fail("Allowed floor function with no arguments");
133 }
134 catch (FunctionCallException ex) {
135 assertNotNull(ex.getMessage());
136 }
137
138 }
139
140 public void testBooleanFunctionRequiresExactlyOneArgument()
141 throws JaxenException {
142
143 BaseXPath xpath = new DOMXPath("floor(2.2, 1.2)");
144
145 try {
146 xpath.selectNodes(doc);
147 fail("Allowed floor function with two arguments");
148 }
149 catch (FunctionCallException ex) {
150 assertNotNull(ex.getMessage());
151 }
152
153 }
154
155 }