1 /* 2 * $Header$ 3 * $Revision$ 4 * $Date$ 5 * 6 * ==================================================================== 7 * 8 * Copyright (C) 2005 Elliotte Rusty Harold. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer. 17 * 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions, and the disclaimer that follows 20 * these conditions in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * 3. The name "Jaxen" must not be used to endorse or promote products 24 * derived from this software without prior written permission. For 25 * written permission, please contact license@jaxen.org. 26 * 27 * 4. Products derived from this software may not be called "Jaxen", nor 28 * may "Jaxen" appear in their name, without prior written permission 29 * from the Jaxen Project Management (pm@jaxen.org). 30 * 31 * In addition, we request (but do not require) that you include in the 32 * end-user documentation provided with the redistribution and/or in the 33 * software itself an acknowledgement equivalent to the following: 34 * "This product includes software developed by the 35 * Jaxen Project (http://www.jaxen.org/)." 36 * Alternatively, the acknowledgment may be graphical using the logos 37 * available at http://www.jaxen.org/ 38 * 39 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 40 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 41 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 42 * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT 43 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 45 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 46 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 47 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 48 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 49 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * ==================================================================== 53 * This software consists of voluntary contributions made by many 54 * individuals on behalf of the Jaxen Project and was originally 55 * created by bob mcwhirter <bob@werken.com> and 56 * James Strachan <jstrachan@apache.org>. For more information on the 57 * Jaxen Project, please see <http://www.jaxen.org/>. 58 * 59 * $Id$ 60 */ 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 /*** 77 * @author Elliotte Rusty Harold 78 * 79 */ 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 }