ClasspathUtilsTest


1   /*
2    * Copyright  2000-2002,2004 The Apache Software Foundation
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License");
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License.
15   *
16   */
17  
18  package org.apache.tools.ant.util;
19  
20  import java.io.File  ;
21  import java.io.IOException  ;
22  import java.util.Enumeration  ;
23  import junit.framework.TestCase;
24  
25  import org.apache.tools.ant.BuildException;
26  import org.apache.tools.ant.Project;
27  import org.apache.tools.ant.types.Path;
28  
29  
30  /**
31   * Test case for ClasspathUtils
32   *
33   */
34  public class ClasspathUtilsTest extends TestCase {
35  
36      private Project p;
37  
38      public ClasspathUtilsTest(String   name) {
39          super(name);
40      }
41  
42      public void setUp() {
43          p = new Project();
44          p.init();
45      }
46  
47  
48      public void testOnlyOneInstance() {
49          Enumeration   enumeration;
50          String   list = "";
51          ClassLoader   c = ClasspathUtils.getUniqueClassLoaderForPath(p, (Path) null, false);
52          try {
53              enumeration = c.getResources(
54                  "org/apache/tools/ant/taskdefs/defaults.properties");
55          } catch (IOException   e) {
56              throw new BuildException(
57                  "Could not get the defaults.properties resource");
58          }
59          int count = 0;
60          while (enumeration.hasMoreElements()) {
61              list = list + " " + enumeration.nextElement();
62              count++;
63          }
64          assertTrue("Should be only one and not " + count + " " + list, count == 1);
65      }
66  }
67
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