Hi Stale, Couldn't get it any smaller, :) Cut down Session Bean public class AOPUnitTestManagerBean { | | private IPersistenceHelper helper; | | public AOPUnitTestManagerBean() { | helper = new PersistenceHelper(null); | } | | public void createObject(Object o) { | helper.create(o); | } | } JUnit Test import org.junit.Before; | import org.junit.Test; | | public class AOPUnitTestManagerBeanTest { | | private AOPUnitTestManagerBean man; | | @Before | public void setUp() throws Exception { | man = new AOPUnitTestManagerBean(); | } | | @Test | public void testCreateObject() { | | String s = new String("Hello"); | man.createObject(s); | } | } IPersistenceHelper interface public interface IPersistenceHelper { | | public void create(Object o); | } MockPersistenceHelper public class MockPersistenceHelper implements IPersistenceHelper { | | public MockPersistenceHelper(String PERSISTENCE_CONTEXT_NAME) { | } | | public void create(Object o) { | System.out.println("inside MockPersistenceHelper.create()"); | } | } PersistenceHelper public class PersistenceHelper implements IPersistenceHelper { | | public PersistenceHelper(String persistenceContextName) { | } | | public void create(Object o) { | System.out.println("inside PersistenceHelper.create()"); | System.out.println("This should have been mocked-out --- did you set -javaagent in jvm args?"); | } | } Interceptor import org.jboss.aop.advice.Interceptor; | import org.jboss.aop.joinpoint.Invocation; | | public class PersistenceHelperInterceptor implements Interceptor { | | public String getName() { | return "PersistenceHelperInterceptor"; | } | | public Object invoke(Invocation invocation) throws Throwable { | System.out.println("Inside PersistenceHelperInterceptor.invoke"); | | Object helper = new MockPersistenceHelper(null); | return helper; | } | } jboss-aop.xml <?xml version="1.0" encoding="UTF-8"?> | <aop> | | <bind pointcut="execution(public $typedef{persistenceHelperTypeDef}->new(java.lang.String))"> | <interceptor class="PersistenceHelperInterceptor"/> | </bind> | | <!-- This causes Stack Overflow Error since both PersistenceHelper | and MockPersistenceHelper implement IPersistenceHelper, causing | infinite loop (of sorts) --> | <typedef name="persistenceHelperTypeDef" expr="class($instanceof{IPersistenceHelper})" /> | | <!-- This causes ClassCastException --> | <!-- typedef name="persistenceHelperTypeDef" expr="class($instanceof{IPersistenceHelper}) AND !class(MockPersistenceHelper)" /--> | | </aop> Hope this helps View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4215632#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...