1   /***************************************************************************************
2    * Copyright (c) Jonas Bon?r, Alexandre Vasseur. All rights reserved.                 *
3    * http://aspectwerkz.codehaus.org                                                    *
4    * ---------------------------------------------------------------------------------- *
5    * The software in this package is published under the terms of the LGPL license      *
6    * a copy of which has been included with this distribution in the license.txt file.  *
7    **************************************************************************************/
8   package test;
9   
10  import junit.framework.TestCase;
11  
12  import java.io.Serializable;
13  import java.io.ObjectStreamClass;
14  import java.lang.reflect.Modifier;
15  
16  import javassist.ClassPool;
17  import javassist.CtClass;
18  import javassist.CtNewMethod;
19  import javassist.CtField;
20  import javassist.CtConstructor;
21  import org.codehaus.aspectwerkz.transform.delegation.JavassistHelper;
22  import org.objectweb.asm.Constants;
23  
24  /***
25   * Test the Javassist based SerialVerUid computation.
26   * See AW-244 for synthetic members bug.
27   * 
28   * @author <a href="mailto:alex@gnilux.com">Alexandre Vasseur</a>
29   */
30  public class SerialVerUidTest extends TestCase implements Serializable {
31  
32      public Object[] someMethod() {return null;}
33  
34      public SerialVerUidTest() {super();}
35  
36      public SerialVerUidTest(Object[] foo) {;}
37  
38      protected static final int someField = 32;
39  
40      public void testSerialVerUid() throws Throwable {
41          Class javaClass = this.getClass();
42          long javaSerialVerUid = ObjectStreamClass.lookup(javaClass).getSerialVersionUID();
43  
44          CtClass javassistClass = ClassPool.getDefault().get(this.getClass().getName());
45          long javassistSerialVerUid = JavassistHelper.calculateSerialVerUid(javassistClass);
46  
47          assertEquals(javaSerialVerUid, javassistSerialVerUid);
48      }
49  
50      public void testSerialVerUidSynthetic() throws Throwable {
51          CtClass javassistClass = ClassPool.getDefault().get(this.getClass().getName());
52          // build a class with synthetic method, field, ctor
53          javassistClass.setName(this.getClass().getName()+"Generated");
54          int syntheticModifier = Constants.ACC_SYNTHETIC | Modifier.PUBLIC;
55          //javassistClass.addMethod(CtNewMethod.make(syntheticModifier, CtClass.intType, "syntheticDo", new CtClass[]{}, new CtClass[]{}, "{return 0;}", javassistClass));
56          CtField field = new CtField(CtClass.intType, "syntheticField", javassistClass);
57          field.setModifiers(syntheticModifier);
58          javassistClass.addField(field);
59          CtConstructor ctor = new CtConstructor(new CtClass[]{CtClass.intType}, javassistClass);
60          ctor.setModifiers(syntheticModifier);
61          ctor.setBody("{super();}");
62          javassistClass.addConstructor(ctor);
63  
64          long javassistSerialVerUid = JavassistHelper.calculateSerialVerUid(javassistClass);
65  
66          Class javaClassGenerated = javassistClass.toClass();
67          long javaSerialVerUid = ObjectStreamClass.lookup(javaClassGenerated).getSerialVersionUID();
68  
69          assertEquals(javaSerialVerUid, javassistSerialVerUid);
70  
71      }
72  
73      public static void main(String[] args) {
74          junit.textui.TestRunner.run(suite());
75      }
76  
77      public static junit.framework.Test suite() {
78          return new junit.framework.TestSuite(SerialVerUidTest.class);
79      }
80  }