RSpec controller testing devise

secret_controller_spec.rb

require 'spec_helper'

describe SecretController do
  let(:user) { User.create! email: "[email protected]",
                            password: "the-secrets",
                            password_confirmation: "the-secrets"
  }

  before do
    @request.env["devise.mapping"] = Devise.mappings[:user]
  end

  it "logged in should get show" do
    sign_in user
    get :show
    response.should be_success
  end

  it "not authenticated should get redirect" do
    get :show
    response.should be_redirect
  end
end

spec_helper.rb

# include in the RSpec.config block
config.include Devise::TestHelpers, :type => :controller