1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.beanutils.converters;
19
20 import junit.framework.TestCase;
21 import junit.framework.TestSuite;
22
23 /**
24 * Tests for the ClassReloader utility class.
25 *
26 * @version $Id$
27 */
28
29 public class ClassReloaderTestCase extends TestCase {
30
31 // ------------------------------------------------------------------------
32
33 public ClassReloaderTestCase(final String name) {
34 super(name);
35 }
36
37
38 public static TestSuite suite() {
39 return new TestSuite(ClassReloaderTestCase.class);
40 }
41
42 // ------------------------------------------------------------------------
43
44 public static class DummyClass {
45 }
46
47 /**
48 * Test basic operation of the ClassReloader.
49 */
50 public void testBasicOperation() throws Exception {
51 final ClassLoader sharedLoader = this.getClass().getClassLoader();
52 final ClassReloader componentLoader = new ClassReloader(sharedLoader);
53
54 final Class<?> sharedClass = DummyClass.class;
55 final Class<?> componentClass = componentLoader.reload(sharedClass);
56
57 // the two Class objects contain the same bytecode, but are not equal
58 assertTrue(sharedClass != componentClass);
59
60 // the two class objects have different classloaders
61 assertSame(sharedLoader, sharedClass.getClassLoader());
62 assertSame(componentLoader, componentClass.getClassLoader());
63 assertTrue(sharedLoader != componentLoader);
64
65 // verify that objects of these two types are not assignment-compatible
66 final Object obj1 = sharedClass.newInstance();
67 final Object obj2 = componentClass.newInstance();
68
69 assertTrue("Obj1 class incorrect", sharedClass.isInstance(obj1));
70 assertFalse("Obj1 class incorrect", componentClass.isInstance(obj1));
71 assertFalse("Obj2 class incorrect", sharedClass.isInstance(obj2));
72 assertTrue("Obj2 class incorrect", componentClass.isInstance(obj2));
73 }
74
75 }
76