Event triggered on helper for async Jasmine calls

StellarModuleTest.coffee

###
Stellar Module Test - Assumes jasmine is global
@author: Kaleb Fulgham
@license: MIT
###
define [
    '../specs/helpers/TestHelpers' 
    'modules/StellarModule'
],
(TestHelpers, StellarModule) ->

    describe "StellarModule", ->
        describe "ItemView", ->
            it "should do foo bar baz with view", ->
                itemView = new ItemView()
                
                # Expect event 'render' to be triggered on the item view
                TestHelpers.eventTriggeredOn itemView, 'render', =>
                    $a = itemView.$('a')
                    expect($a.data('id')).toEqual @flight.id, 'Anchor data ID attribute'
                    # more expectations

                # Call the async code
                itemView.render()

TestHelpers.coffee

###
TestHelpers
@author: Kaleb Fulgham
@license: MIT
###
define [], -> 
    TestHelpers =         
        eventTriggeredOn: (caller, eventName, callback) ->
            ###
            Wait for the event to be triggered and execute the callback once done.
            ###
            spy = spyOn(caller, 'trigger')
            waitsFor ->
                result = false
                if spy.callCount > 0
                    for callArgs in spy.argsForCall
                        if callArgs[0] == eventName
                            result = true
                            break
                result
            , "Async call to trigger event [#{eventName}] never occurred", 1000

            runs ->
                callback()

    TestHelpers