Hi,
If you cannot easily get your event dispatching verified with mockito
maybe you can use the synchronous api from morefluent:
// given
var dispatcher:EventDispatcher = new EventDispatcher();
observing("someEvent").on(dispatcher);
// when
dispatcher.dispatchEvent(new Event("someEvent"));
// then
assert(dispatcher).observed("someEvent", times(1));
The project is available here:
http://bitbucket.org/loomis/morefluent
Cheers,
Kris