event.coffee

#1
doStuff = -> alert("Stuff!")
$('.do-stuff').live 'click', (e) ->
  doStuff()
  
#2
clickeyDo = (selector, callback) ->
  $(selector).live 'click', (e) ->
    e.preventDefault()
    callback(e)

event_spec.coffee

describe "#1 automatic binding, real trigger", ->
  Given -> spyOn(window, "doStuff")
  Given -> @$button = inject('do-stuff')
  When -> @$button.trigger('click')
  Then -> expect(doStuff).toHaveBeenCalled()
  
describe "#2 named function, spying, no trigger", ->
  Given -> @$saveStuff = inject('save-stuff')
  Given -> spyOn($.fn,"live")
  Given -> @callback = jasmine.createSpy()
  
  When -> clickeyDo('.save-stuff', @callback)
  Then -> expect($.fn.live).toHaveBeenCalledWith('click', jasmine.any(Function))
  Then -> expect($.fn.live.mostRecentCall.object).toBe(@$saveStuff)
  
  describe "~ the anonymous bound method", ->
    Given -> @event = jasmine.createSpyObj('event',['preventDefault'])
    When -> $.fn.live.mostRecentCall.args[1](@event)
    Then -> expect(@event.preventDefault).toHaveBeenCalled()
    Then -> expect(@callback).toHaveBeenCalledWith(@event)