Trailblazer and Devise current_user cells in RSpec

Trailblazer recommends entering current_user

into a cell, for example

<%= concept(Appointment::Cell::UserStatus,user,current_user: current_user) %>

      

        
        
        
      

    

Then one could make it available in the cell using the method

  def current_user
    options[:current_user]
  end

      

        
        
        
      

    

However, this means adding this injection on every call to the cell, when in fact it current_user

is a special global var.

I managed to get around to inject current_user

by creating a superclass cell like:

class Template::Cell < Cell::Concept
  include Pundit
  include Devise::Controllers::Helpers

  Devise::Controllers::Helpers.define_helpers(Devise::Mapping.new(:user, {}))
  include Escaped
  include ActionView::Helpers::JavaScriptHelper
end

      

        
        
        
      

    

This works well, except I can't seem to work to sign the user while testing RSpec. The normal controller based method does not work as there is no access to requests.

RSpec.describe Friendship::Cell, type: :cell do
  include Devise::TestHelpers
  include ControllerHelpers
  let!(:user) { create :user }

  describe '#methods' do
    before do
      sign_in(user)
    end
    subject { concept(described_class, user, current_user: user) }
    it { expect(current_user).to eq(user) }
  end
end

module ControllerHelpers
  def sign_in(user = double('user'))
    if user.nil?
      allow(request.env['warden']).to receive(:authenticate!).and_throw(:warden, {:scope => :user})
      allow(controller).to receive(:current_user).and_return(nil)
    else
      allow(request.env['warden']).to receive(:authenticate!).and_return(user)
      allow(controller).to receive(:current_user).and_return(user)
    end
  end
end

      

        
        
        
      

    

Mistake

1) Friendship::Cell cell can be instantiated
     Failure/Error: @request.env['action_controller.instance'] = @controller

     NoMethodError:
       undefined method `env' for nil:NilClass
     # /Users/sean/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/devise-4.3.0/lib/devise/test/controller_helpers.rb:40:in `setup_controller_for_warden'
     # /Users/sean/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/rspec-rails-3.6.0/lib/rspec/rails/adapters.rb:165:in `block (2 levels) in setup'