Async Callback Test

AsyncCallbackTest.as

public function shouldTestCallbackMethod():void
{
    // Create a dispatcher that lives outside your callback
    var dispatcher:EventDispatcher = new EventDispatcher();

    // Create your callback mock function which dispatches the event
    var func:Function = function():void{
        dispatcher.dispatchEvent(new Event(Event.COMPLETE));
    }

    // Set the FlexUnit condition to wait for the dispatcher
    Async.proceedOnEvent(this, dispatcher, Event.COMPLETE);

    // Assign callback and run code
    myObj.callback = func;
    myObj.execute();
}