Mixin long example

Mixin long example.coffee

class Nothing
  constructor: (@name="nothing") ->

  doSomething: =>
    "I cannot do anything"

class Presenter extends Mixin
  presentYourself: =>
    "My name is #{@name}"

  doIPlay: =>
    "I play with many #{@players}"

class Game extends Mixin
  setup: =>
    @name = 'Monopoly'
    @players = []
    @players.push "David"

  sayHello: =>
    @presentYourself()

something = new Nothing()
expect(something.name).toBe('nothing')

ObjectHelper.addRole(something, Presenter)
expect(something.presentYourself()).toBe('My name is nothing')


ObjectHelper.addRole(something, Game)
expect(something.sayHello()).toBe('My name is Monopoly')
expect(something.doIPlay()).toBe('I play with many David')

something.name = 'something'
expect(something.presentYourself()).toBe('My name is something')

something.players.push "John"
expect(something.doIPlay()).toBe('I play with many David,John')