Devise and Rspec - undefined method `authenticate!' for nil:NilClass - ruby-on-rails

Question

I'm trying to test my controller for access from unregistered users. Im using devise (3.3.0) and rspec (3.0.0).
spec/controllers/dares_controller_spec.rb
require 'rails_helper'
describe DaresController do
let(:challenger) { create(:user) }
let(:acceptor) { create(:user) }
let(:challenge) { create(:challenge) }
let(:dare) { create(:dare) }
let(:user) { create(:user) }
describe 'Guest access to dares' do
describe 'GET #show' do
it "redirects to root" do
get :show, id: dare.id, challenge_id: challenge.id
expect(response).to require_login
end
end
end
end
In the controller:
dares_controller.rb
before_action :authenticate_user!
def show
end
I get the following error:
Failures:
1) DaresController Guest access to dares GET #show redirects to root
Failure/Error: get :show, id: dare.id, challenge_id: challenge.id
NoMethodError:
undefined method `authenticate!' for nil:NilClass
# ./spec/controllers/dares_controller_spec.rb:16:in `block (4 levels) in <top (required)>'
I tried adding
RSpec.configure do |config|
config.include Devise::TestHelpers, :type => :controller
end
to my spec_helper / rails_helper but it didnt fix the problem. I googled for solutions for a few hours, bothing seems to help.
Matcher - require_login
RSpec::Matchers.define :require_login do |expected|
match do |actual|
expect(actual).to redirect_to Rails.application.routes.url_helpers.new_user_session_path
end
failure_message do |actual|
"expected to require login to access the method"
end
failure_message_when_negated do |actual|
"expected not to require login to access the method"
end
description do
"redirect to the login form"
end
end

Answer 1

change this line:
describe DaresController do
to this one:
RSpec.describe DaresController, type: :controller do
Since you configure the spec_helper or rails_helper with:
config.include Devise::TestHelpers, type: :controller
You should set the correct spec type to works properly. It's a rspec behavior in rspec~3