use sinon.stub for a method has callback argument

gistfile1.coffee

should = require 'should'
sinon = require 'sinon'

class Hoge
  fuga: (params, callback)->
    return callback(params)

class Fuga
  moge: (params, dummy, callback)->
    return callback(params)

describe 'sinon sample', ->
  it 'callback stub sample(OK)', (done)->
    hoge = new Hoge()
    stub = sinon.stub(hoge, 'fuga').yields({'foo':'bar'})
    hoge.fuga({'foo': 'bar'}, 
      (params)->
        params.should.have.property 'foo'
        done()
    )

  it '[NG] callback stub sample(assertion failed)', (done)->
    hoge = new Hoge()
    stub = sinon.stub(hoge, 'fuga').yields({'fuga':'bar'})
    hoge.fuga({'foo': 'bar'}, 
      (params)->
        # AssertionError: expected { fuga: 'bar' } to have a property 'foo'
        params.should.have.property 'foo'
        done()
    )

  it '[NG] callback not called', (done)->
    # Error: timeout of 2000ms exceeded
    hoge = new Hoge()
    stub = sinon.stub(hoge, 'fuga')
    hoge.fuga({'foo': 'bar'}, 
      (params)->
        params.should.have.property 'foo'
        done()
    )
describe 'sinon sample(Fuga)', ->
  it '[OK] callback stub sample include dummy', (done)->
    fuga = new Fuga()
    stub = sinon.stub(fuga, 'moge').yields({'foo':'bar'})
    fuga.moge({'foo': 'bar'}, null, 
      (params)->
        params.should.have.property 'foo'
        done()
    )
  it '[NG] callback stub sample include dummy', (done)->
    fuga = new Fuga()
    stub = sinon.stub(fuga, 'moge')
    fuga.moge({'foo': 'bar'}, null, 
      (params)->
        params.should.have.property 'foo'
        done()
    )