rails 4 mocking session in rspec - ruby-on-rails

Question

gemfile:
source 'https://rubygems.org'
gem 'rails', '4.1.1'
gem 'mysql2
spec/spec_helper.rb
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment",__FILE__)
require 'rspec/rails'
require "capybara/rspec"
include Capybara::DSL
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
RSpec.configure do |config|
config.include Devise::TestHelpers, :type => :controller
config.extend ControllerMacros, :type => :controller
end
spec/support/controller_macros.rb
module ControllerMacros
def login_user
before(:each) do
#request.env["devise.mapping"] = Devise.mappings[:user]
user = FactoryGirl.create(:user)
# user.confirm! # or set a confirmed_at inside the factory. Only necessary if you are using the "confirmable" module
sign_in user
end
end
def load_key
session[:master_key] = SecureRandom.hex(24)
end
end
spec/factories/factory.rb
FactoryGirl.define do
factory :user do
email "test#test.com"
password "12345678"
end
end
categories_controller.rb
class CategoriesController < ApplicationController
before_filter :authenticate_user!, :load_key!
def index
#categories = Category.where("user_id is null or user_id = ?", current_user).order(updated_at: :desc)
end
private
def category_params
params.require(:category).permit(:title)
end
end
spec/controllers/categories_controller_spec.rb
require 'rails_helper'
describe CategoriesController do
login_user
load_key
it "get list of categories" do
get :index
expect(response).to render_template("index")
end
end
application_controller.rb
class ApplicationController < ActionController::Base
def load_key!
redirect_to(key_path) unless session[:master_key]
end
end
I would like to bypass a load_key! before_filer in CategoriesController. I added method load_key to controller_macros.rb. But it gives me the error:
undefined local variable or method 'session' for RSpec::ExampleGroups::CategoriesController:Class (NameError) from d:/sites/key_manager/spec/support/controller_macros.rb:19:in `load_key'
Looks like session variable is unavailable under rspec.

Answer 1

The answer was a quite simple.
I should use request.session rather than session.
In this case I should transfer a session variable assign from controller_macros.rb to categories_controller_spec.rb:
categories_controller_spec.rb
require 'rails_helper'
require 'spec_helper'
describe CategoriesController, :type => :controller do
login_user
it "redirect to key form when key was't loaded" do
get :index
expect(response).to redirect_to(key_path)
end
it "view password list #index" do
request.session[:master_key] = SecureRandom.hex(24) # <======================
get :index
expect(response).to render_template(:index)
end
end
controller_macros.rb
module ControllerMacros
def login_admin
before(:each) do
#request.env["devise.mapping"] = Devise.mappings[:admin]
sign_in FactoryGirl.create(:admin) # Using factory girl as an example
end
end
def login_user
before(:each) do
#request.env["devise.mapping"] = Devise.mappings[:user]
user = FactoryGirl.create(:user)
# user.confirm! # or set a confirmed_at inside the factory. Only necessary if you are using the "confirmable" module
sign_in user
end
end
end