1   /*
2    * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
3    * 
4    * This software is open source. 
5    * See the bottom of this file for the licence.
6    * 
7    * $Id: TestNullAttributes.java,v 1.6 2004/06/25 08:03:47 maartenc Exp $
8    */
9   
10  package org.dom4j;
11  
12  import junit.framework.Test;
13  import junit.framework.TestSuite;
14  import junit.textui.TestRunner;
15  
16  /*** Tests the use of null attribute values
17    *
18    * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
19    * @version $Revision: 1.6 $
20    */
21  public class TestNullAttributes extends AbstractTestCase {
22  
23      protected DocumentFactory factory = DocumentFactory.getInstance();
24      protected Document document = factory.createDocument();
25      protected Element element = document.addElement( "root" );
26      
27      public static void main( String[] args ) {
28          TestRunner.run( suite() );
29      }
30      
31      public static Test suite() {
32          return new TestSuite( TestNullAttributes.class );
33      }
34      
35      public TestNullAttributes(String name) {
36          super(name);
37      }
38  
39      // Test case(s)
40      //-------------------------------------------------------------------------                    
41      public void testStringNames() throws Exception {
42  
43          element.addAttribute( "foo", null );
44          Attribute attribute = element.attribute( "foo" );        
45          assertTrue( attribute == null );
46          
47          element.addAttribute( "foo", "123" );
48          attribute = element.attribute( "foo" );        
49          assertTrue( attribute != null );
50                  
51          element.addAttribute( "foo", null );
52          attribute = element.attribute( "foo" );
53          assertTrue( attribute == null );
54      }
55          
56      public void testQNames() throws Exception {
57          
58          QName bar = QName.get( "bar" );
59          
60          element.addAttribute( bar, null );
61          Attribute attribute = element.attribute( bar );        
62          assertTrue( attribute == null );
63          
64          element.addAttribute( bar, "123" );
65          attribute = element.attribute( bar );        
66          assertTrue( attribute != null );
67                  
68          element.addAttribute( bar, null );
69          attribute = element.attribute( bar );
70          assertTrue( attribute == null );
71      }
72          
73      public void testAttributes() throws Exception {
74          
75          Attribute attribute = factory.createAttribute( element, "v", null );
76          
77          assertTrue( attribute.getText() == null );
78          assertTrue( attribute.getValue() == null );
79          
80          element.add( attribute );
81          attribute = element.attribute( "v" );
82          assertTrue( attribute == null );
83          
84          attribute = factory.createAttribute( element, "v", "123" );
85          element.add( attribute );
86          attribute = element.attribute( "v" );
87          assertTrue( attribute != null );
88          
89          attribute = factory.createAttribute( element, "v", null );
90          element.add( attribute );
91          attribute = element.attribute( "v" );
92          assertTrue( attribute == null );
93      }
94      
95  }
96  
97  
98  
99  
100 /*
101  * Redistribution and use of this software and associated documentation
102  * ("Software"), with or without modification, are permitted provided
103  * that the following conditions are met:
104  *
105  * 1. Redistributions of source code must retain copyright
106  *    statements and notices.  Redistributions must also contain a
107  *    copy of this document.
108  *
109  * 2. Redistributions in binary form must reproduce the
110  *    above copyright notice, this list of conditions and the
111  *    following disclaimer in the documentation and/or other
112  *    materials provided with the distribution.
113  *
114  * 3. The name "DOM4J" must not be used to endorse or promote
115  *    products derived from this Software without prior written
116  *    permission of MetaStuff, Ltd.  For written permission,
117  *    please contact dom4j-info@metastuff.com.
118  *
119  * 4. Products derived from this Software may not be called "DOM4J"
120  *    nor may "DOM4J" appear in their names without prior written
121  *    permission of MetaStuff, Ltd. DOM4J is a registered
122  *    trademark of MetaStuff, Ltd.
123  *
124  * 5. Due credit should be given to the DOM4J Project - 
125  *    http://www.dom4j.org
126  *
127  * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS
128  * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
129  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
130  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
131  * METASTUFF, LTD. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
132  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
133  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
134  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
135  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
136  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
137  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
138  * OF THE POSSIBILITY OF SUCH DAMAGE.
139  *
140  * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
141  *
142  * $Id: TestNullAttributes.java,v 1.6 2004/06/25 08:03:47 maartenc Exp $
143  */