final PairChat chatOrg = manager.open(uri("ORG@domain.org"));
    final MessageReceivedTestHandler handlerOrg = new MessageReceivedTestHandler();
    chatOrg.addMessageReceivedHandler(handlerOrg);
    assertTrue("org listener empty", handlerCom.isNotCalled());
    session.receives(new Message("message com 2", MYSELF, uri("COM@domain.com")));
    assertTrue("com has one message", handlerCom.isCalledOnce());
    assertTrue("org has no message", handlerOrg.isNotCalled());
  }