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1
61
62 package org.jaxen.function;
63
64 import java.io.IOException  ;
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.XPath;
76 import org.jaxen.dom.DOMXPath;
77 import org.w3c.dom.Document ;
78 import org.xml.sax.SAXException ;
79
80
84 public class CountTest extends TestCase {
85
86 private Document doc;
87
88 public void setUp() throws ParserConfigurationException , SAXException , IOException
89 {
90 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
91 factory.setNamespaceAware(true);
92 DocumentBuilder builder = factory.newDocumentBuilder();
93 doc = builder.parse( "xml/basic.xml" );
94 }
95
96
97 public CountTest(String name) {
98 super(name);
99 }
100
101 public void testCount3()
102 {
103 try
104 {
105 XPath xpath = new DOMXPath( "count(3)" );
106 xpath.selectNodes( doc );
107 fail("Allowed count of number");
108 }
109 catch (FunctionCallException e)
110 {
111 assertEquals("count() function can only be used for node-sets", e.getMessage());
112 }
113 catch (Exception e)
114 {
115 e.printStackTrace();
116 fail( e.getMessage() );
117 }
118 }
119
120 public void testCountFunctionRequiresAtLeastOneArgument()
121 throws JaxenException {
122
123 BaseXPath xpath = new DOMXPath("count()");
124
125 try {
126 xpath.selectNodes(doc);
127 fail("Allowed count function with no arguments");
128 }
129 catch (FunctionCallException ex) {
130 assertNotNull(ex.getMessage());
131 }
132
133 }
134
135 public void testCountFunctionRequiresAtMostOneArgument()
136 throws JaxenException {
137
138 BaseXPath xpath = new DOMXPath("count(/*, /@*)");
139
140 try {
141 xpath.selectNodes(doc);
142 fail("Allowed count function with two arguments");
143 }
144 catch (FunctionCallException ex) {
145 assertNotNull(ex.getMessage());
146 }
147
148 }
149
150 public void testCountRootElement()
151 throws JaxenException {
152
153 BaseXPath xpath = new DOMXPath("count(/*)");
154 Double result = (Double ) xpath.evaluate(doc);
155 assertEquals(1.0, result.doubleValue(), 0.00001);
156
157 }
158
159
160 }
161 |
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