1   /*
2    * $Header: /home/projects/jaxen/scm/jaxen/src/java/test/org/jaxen/test/BinaryExprTest.java,v 1.2 2007/01/05 18:25:26 elharo Exp $
3    * $Revision: 1.2 $
4    * $Date: 2007/01/05 18:25:26 $
5    *
6    * ====================================================================
7    *
8    * Copyright 2007 bob mcwhirter & James Strachan.
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 are
13   * met:
14   * 
15   *   * Redistributions of source code must retain the above copyright
16   *     notice, this list of conditions and the following disclaimer.
17   * 
18   *   * Redistributions in binary form must reproduce the above copyright
19   *     notice, this list of conditions and the following disclaimer in the
20   *     documentation and/or other materials provided with the distribution.
21   * 
22   *   * Neither the name of the Jaxen Project nor the names of its
23   *     contributors may be used to endorse or promote products derived 
24   *     from this software without specific prior written permission.
25   * 
26   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
29   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
30   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37   *
38   * ====================================================================
39   * This software consists of voluntary contributions made by many 
40   * individuals on behalf of the Jaxen Project and was originally 
41   * created by bob mcwhirter <bob@werken.com> and 
42   * James Strachan <jstrachan@apache.org>.  For more information on the 
43   * Jaxen Project, please see <http://www.jaxen.org/>.
44   * 
45   * $Id: BinaryExprTest.java,v 1.2 2007/01/05 18:25:26 elharo Exp $
46   */
47  
48  
49  
50  package org.jaxen.test;
51  
52  import javax.xml.parsers.ParserConfigurationException;
53  
54  import org.jaxen.JaxenException;
55  import org.jaxen.dom.DOMXPath;
56  
57  import junit.framework.TestCase;
58  
59  /***
60   * <p>
61   *  Test for various kinds of binary expressions.
62   * </p>
63   * 
64   * @author Elliotte Rusty Harold
65   * @version 1.1.1
66   *
67   */
68  public class BinaryExprTest extends TestCase
69  {
70  
71      public void testBooleanPrecedence() 
72       throws JaxenException, ParserConfigurationException {
73        
74          // Note how the parentheses change the precedence and the result
75          DOMXPath xpath1 = new DOMXPath("false() and (false() or true())");
76          Boolean result1 = (Boolean) xpath1.evaluate(null);
77          assertFalse(result1.booleanValue());
78          DOMXPath xpath2 = new DOMXPath("false() and false() or true()");
79          Boolean result2 = (Boolean) xpath2.evaluate(null);
80          assertTrue(result2.booleanValue());
81          
82          String expr = xpath1.getRootExpr().getText();
83          DOMXPath xpath3 = new DOMXPath(expr);
84          Boolean result3 = (Boolean) xpath3.evaluate(null);
85          assertEquals(expr, result1, result3);
86          assertFalse(expr, result3.booleanValue());
87        
88      }
89  
90  }