```ruby
module Kracken
  module SpecHelper
    @@current_user = nil

    def self.current_user
      @@current_user
    end

    def self.current_user=(current_user)
      @@current_user = current_user
    end

    module Request
      def sign_in(user = nil)
        Kracken::SpecHelper.current_user = user
      end
    end

    module Controller
      def sign_in(user = nil)
        Kracken::SpecHelper.current_user = user
      end

      def sign_out(ignored = nil)
        Kracken::SpecHelper.current_user = nil
      end

      def current_user
        Kracken::SpecHelper.current_user
      end
    end

  end

end

# monkey patch current_user
module Kracken
  module Controllers
    module Authenticatable
      def current_user
        Kracken::SpecHelper.current_user
      end
    end
  end
end

if defined? RSpec
  RSpec.configure do |c|
    c.include Kracken::SpecHelper::Controller, type: :controller
    c.include Kracken::SpecHelper::Request, type: :request
    c.include Kracken::SpecHelper::Request, type: :kracken

    c.before(type: :kracken) do
        Kracken::SpecHelper.current_user = nil
    end

    c.before(type: :controller) do
        Kracken::SpecHelper.current_user = nil
    end

    c.before(type: :request) do
        Kracken::SpecHelper.current_user = nil
    end
  end
end
```

Include RSpec features as 'requests'.
user
```ruby
module Kracken
  module SpecHelper
    @@current_user = nil

    def self.current_user
      @@current_user
    end

    def self.current_user=(current_user)
      @@current_user = current_user
    end

    module Request
      def sign_in(user = nil)
        Kracken::SpecHelper.current_user = user
      end
    end

    module Controller
      def sign_in(user = nil)
        Kracken::SpecHelper.current_user = user
      end

      def sign_out(ignored = nil)
        Kracken::SpecHelper.current_user = nil
      end

      def current_user
        Kracken::SpecHelper.current_user
      end
    end

  end

end

# monkey patch current_user
module Kracken
  module Controllers
    module Authenticatable
      def current_user
        Kracken::SpecHelper.current_user
      end
    end
  end
end

if defined? RSpec
  RSpec.configure do |c|
    c.include Kracken::SpecHelper::Controller, type: :controller
    c.include Kracken::SpecHelper::Request, type: :feature
    c.include Kracken::SpecHelper::Request, type: :kracken
    c.include Kracken::SpecHelper::Request, type: :request

    c.before(type: :kracken) do
        Kracken::SpecHelper.current_user = nil
    end

    c.before(type: :controller) do
        Kracken::SpecHelper.current_user = nil
    end

    c.before(type: :request) do
        Kracken::SpecHelper.current_user = nil
    end
  end
end
```
assistant