assertEquals("The explicit DeadEvent should be delivered.", 1, events.size());
    assertEquals("The dead event must not be re-wrapped.", EVENT, events.get(0).getEvent());
  }

  public void testMissingSubscribe() {
    bus.register(new Object());
  }

  public void testUnregister() {
    StringCatcher catcher1 = new StringCatcher();
    StringCatcher catcher2 = new StringCatcher();