Hello, Please can the community help me. I am mocking an AgendaListener on my working memory session using Mockito. However, Mockito's ArgumentCaptor is not picking up the event. Please can you tell me where I am going wrong (code below): Code: // Set up knowledge base and sessions etc .... AgendaEventListener ael = mock(AgendaEventListener.class); ksession.addEventListener(ael); // push data into session .... ArgumentCaptor<AfterActivationFiredEvent> af = ArgumentCaptor.forClass(AfterActivationFiredEvent.class); verify(ael).afterActivationFired(af.capture()); *// This fails* List<AfterActivationFiredEvent> events = aafe.getAllValues(); AfterActivationFiredEvent first = events.get(0); assertThat(first.getActivation().getRule().getName(), is("My rule")); If I add the listener as follows, I can see that the afterActivationFired() method is being called: ksession.addEventListener(new AgendaEventListener() { @Override public void beforeRuleFlowGroupDeactivated( RuleFlowGroupDeactivatedEvent event) { // TODO Auto-generated method stub } @Override public void beforeRuleFlowGroupActivated(RuleFlowGroupActivatedEvent event) { // TODO Auto-generated method stub } @Override public void beforeActivationFired(BeforeActivationFiredEvent event) { // TODO Auto-generated method stub } @Override public void agendaGroupPushed(AgendaGroupPushedEvent event) { // TODO Auto-generated method stub } @Override public void agendaGroupPopped(AgendaGroupPoppedEvent event) { // TODO Auto-generated method stub } @Override public void afterRuleFlowGroupDeactivated( RuleFlowGroupDeactivatedEvent event) { // TODO Auto-generated method stub } @Override public void afterRuleFlowGroupActivated(RuleFlowGroupActivatedEvent event) { // TODO Auto-generated method stub } @Override public void afterActivationFired(AfterActivationFiredEvent event) { // TODO Auto-generated method stub System.out.println(event.getActivation().getRule().getName()); } @Override public void activationCreated(ActivationCreatedEvent event) { // TODO Auto-generated method stub } @Override public void activationCancelled(ActivationCancelledEvent event) { // TODO Auto-generated method stub } }); Thanks for your help in advance. Regards, -- View this message in context: http://drools.46999.n3.nabble.com/AgendaListener-Mockito-not-capturing-ar... Sent from the Drools: User forum mailing list archive at Nabble.com.