1   package org.codehaus.classworlds;
2   
3   /*
4    $Id: ConfiguratorInheritanceTest.java,v 1.2 2004/09/06 12:33:46 brett 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.io.FileInputStream;
53  import java.net.URL;
54  import java.net.MalformedURLException;
55  
56  public class ConfiguratorInheritanceTest extends TestCase
57  {
58      private Launcher launcher;
59      private Configurator configurator;
60  
61      public ConfiguratorInheritanceTest(String name)
62      {
63          super( name );
64      }
65  
66      public void setUp()
67      {
68          this.launcher = new Launcher();
69          this.configurator = new Configurator( this.launcher );
70      }
71  
72      public void tearDown()
73      {
74          this.launcher = null;
75          this.configurator = null;
76      }
77  
78      public void testConfigure_Inheritance() throws Exception
79      {
80          this.configurator.configure( getConfigPath( "inheritance.conf" ) );
81          
82          ClassWorld classWorld = launcher.getWorld();
83          
84          // Now let's look for a class in:
85          //
86          // 1. root.maven.plugin
87          // 2. root.maven.plugins's parent which is root.maven
88          // 3. root.maven's parent which is root
89          //
90          ClassRealm rootMavenPlugin = classWorld.getRealm( "root.maven.plugin" );
91          
92          // Comes form root.maven.plugin realm.
93          assertNotNull( rootMavenPlugin.loadClass( "c.C") );
94          
95          // Comes from the root.maven realm.
96          assertNotNull( rootMavenPlugin.loadClass( "b.B") );
97          
98          // Comes from the root realm.
99          assertNotNull( rootMavenPlugin.loadClass( "a.A") );
100         
101         // Create a child realm that inherits from mommy.
102         ClassRealm checkstyleRealm = rootMavenPlugin.createChildRealm( "checkstyle" );
103         assertNotNull( checkstyleRealm );
104         
105         // Add a constituent.
106         checkstyleRealm.addConstituent( getJarUrl( "d.jar" ) );
107         
108         // Load from class from the child realm. We are looking for
109         // a class in the constituent we just added.
110         assertNotNull( checkstyleRealm.loadClass( "d.D" ) );
111         
112         // Now load a class that we hope to find in a parent realm.
113         assertNotNull( checkstyleRealm.loadClass( "a.A" ) );
114         
115         // Now make sure the classloaders themselves are inheriting correctly.
116         assertNotNull( checkstyleRealm.getClassLoader().loadClass( "d.D" ) );
117         assertNotNull( checkstyleRealm.getClassLoader().loadClass( "a.A" ) );
118         
119         // Test inherited search for resources.
120         assertNotNull( checkstyleRealm.getResource( "a.properties" ) );
121         
122     }
123 
124     private FileInputStream getConfigPath(String name)
125         throws Exception
126     {
127         return new FileInputStream( new File( new File( System.getProperty( "basedir" ), "target/test-data" ), name ) ) ;
128     }
129 
130     protected URL getJarUrl(String jarName) throws MalformedURLException
131     {
132         return new File( new File( System.getProperty( "basedir" ),
133                                    "target/test-data" ),
134                          jarName ).toURL();
135     }
136 }