1   package org.codehaus.classworlds;
2   
3   /*
4    $Id: DefaultClassRealmTest.java,v 1.1.1.1 2004/07/01 13:59:22 jvanzyl Exp $
5   
6    Copyright 2002 (C) The Werken Company. All Rights Reserved.
7   
8    Redistribution and use of this software and associated documentation
9    ("Software"), with or without modification, are permitted provided
10   that the following conditions are met:
11  
12   1. Redistributions of source code must retain copyright
13      statements and notices.  Redistributions must also contain a
14      copy of this document.
15  
16   2. Redistributions in binary form must reproduce the
17      above copyright notice, this list of conditions and the
18      following disclaimer in the documentation and/or other
19      materials provided with the distribution.
20  
21   3. The name "classworlds" must not be used to endorse or promote
22      products derived from this Software without prior written
23      permission of The Werken Company.  For written permission,
24      please contact bob@werken.com.
25  
26   4. Products derived from this Software may not be called "classworlds"
27      nor may "classworlds" appear in their names without prior written
28      permission of The Werken Company. "classworlds" is a registered
29      trademark of The Werken Company.
30  
31   5. Due credit should be given to The Werken Company.
32      (http://classworlds.werken.com/).
33  
34   THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
35   ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
36   NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
37   FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
38   THE WERKEN COMPANY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
39   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
40   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
41   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
43   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
44   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
45   OF THE POSSIBILITY OF SUCH DAMAGE.
46  
47   */
48  
49  import junit.framework.TestCase;
50  
51  import java.io.File;
52  import java.net.URL;
53  
54  public class DefaultClassRealmTest
55      extends TestCase
56  {
57      public DefaultClassRealmTest( String name )
58      {
59          super( name );
60      }
61  
62      // ----------------------------------------------------------------------
63      // Class testing
64      // ----------------------------------------------------------------------
65  
66      public void testLoadClassFromRealm()
67          throws Exception
68      {
69          DefaultClassRealm mainRealm = new DefaultClassRealm( new ClassWorld(), "main" );
70  
71          mainRealm.addConstituent( getJarUrl( "component0-1.0.jar" ) );
72  
73          mainRealm.loadClass( "org.codehaus.plexus.Component0" );
74      }
75  
76      public void testLoadClassFromChildRealmWhereClassIsLocatedInParentRealm()
77          throws Exception
78      {
79          DefaultClassRealm mainRealm = new DefaultClassRealm( new ClassWorld(), "main" );
80  
81          mainRealm.addConstituent( getJarUrl( "component0-1.0.jar" ) );
82  
83          ClassRealm childRealm = mainRealm.createChildRealm( "child" );
84  
85          childRealm.loadClass( "org.codehaus.plexus.Component0" );
86      }
87  
88      public void testLoadClassFromChildRealmWhereClassIsLocatedInGrantParentRealm()
89          throws Exception
90      {
91          DefaultClassRealm mainRealm = new DefaultClassRealm( new ClassWorld(), "main" );
92  
93          mainRealm.addConstituent( getJarUrl( "component0-1.0.jar" ) );
94  
95          ClassRealm childRealm = mainRealm.createChildRealm( "child" );
96  
97          ClassRealm grandchildRealm = childRealm.createChildRealm( "grandchild" );
98  
99          grandchildRealm.loadClass( "org.codehaus.plexus.Component0" );
100     }
101 
102     public void testLoadNonExistentClass()
103         throws Exception
104     {
105         DefaultClassRealm mainRealm = new DefaultClassRealm( new ClassWorld(), "main" );
106 
107         mainRealm.addConstituent( getJarUrl( "component0-1.0.jar" ) );
108 
109         try
110         {
111             mainRealm.loadClass( "org.foo.bar.NonExistentClass" );
112 
113             fail( "A ClassNotFoundException should have been thrown!" );
114         }
115         catch ( ClassNotFoundException e )
116         {
117         }
118     }
119 
120     public void testImport()
121         throws Exception
122     {
123         ClassWorld world = new ClassWorld();
124 
125         ClassRealm r0 = world.newRealm( "r0" );
126 
127         ClassRealm r1 = world.newRealm( "r1" );
128 
129         r0.addConstituent( getJarUrl( "component0-1.0.jar" ) );
130 
131         r1.importFrom( "r0", "org.codehaus.plexus" );
132 
133         r1.loadClass( "org.codehaus.plexus.Component0" );
134     }
135 
136     // ----------------------------------------------------------------------
137     // Resource testing
138     // ----------------------------------------------------------------------
139 
140     public void testResource()
141         throws Exception
142     {
143         DefaultClassRealm mainRealm = new DefaultClassRealm( new ClassWorld(), "main" );
144 
145         mainRealm.addConstituent( getJarUrl( "component0-1.0.jar" ) );
146 
147         URL resource = mainRealm.getResource( "META-INF/plexus/components.xml" );
148 
149         assertNotNull( resource );
150     }
151 
152     // ----------------------------------------------------------------------
153     //
154     // ----------------------------------------------------------------------
155 
156     protected URL getJarUrl( String jarName )
157         throws Exception
158     {
159         File jarFile = new File( System.getProperty( "basedir" ), "src/test-jars/" + jarName );
160 
161         return jarFile.toURL();
162     }
163 }