rspec return issue

gistfile1.rb

  describe "'getLibrary'" do
    let (:user) { FactoryGirl.create(:user) }
    let (:album) { FactoryGirl.create(:album) }
    let (:library) { FactoryGirl.create(:library, :user => user, :album => album ) }

    it "returns http success 200" do
      sign_in user

      post 'getLibrary'
      puts response.body
      response.should be_success
    end
  end