module RSpec::Rails::ControllerExampleGroup::ClassMethods

def self.name; "AnonymousController"; end

def controller(base_class = nil, &body)
  root_controller = defined?(ApplicationController) ? ApplicationController : ActionController::Base
  base_class ||= RSpec.configuration.infer_base_class_for_anonymous_controllers? ?
                   controller_class :
                   root_controller
  base_class ||= root_controller
  new_controller_class = Class.new(base_class) do
    def self.name; "AnonymousController"; end
  end
  new_controller_class.class_eval(&body)
  (class << self; self; end).__send__(:define_method, :controller_class) { new_controller_class }
  metadata[:example_group].delete(:described_class)
  metadata[:example_group].extend DescribedClassDeprecation.new(new_controller_class)
  before do
    @orig_routes = self.routes
    self.routes  = ActionDispatch::Routing::RouteSet.new.tap { |r|
      r.draw { resources :anonymous }
    }
  end
  after do
    self.routes  = @orig_routes
    @orig_routes = nil
  end
end

def controller_class
  described_class
end

def routes(&blk)
  before do
    self.routes = blk.call
  end
end