class Gon
  module SpecHelper
    module Rails
      extend ActiveSupport::Concern

      module ClassMethods
        module GonSession
          def process(*, **)
            # preload threadlocal & store controller instance
            if controller.is_a? ActionController::Base
              controller.gon
              Gon.send(:current_gon).env[Gon::EnvFinder::ENV_CONTROLLER_KEY] =
               controller
            end
            super
          end
        end

        def new(*)
          super.extend(GonSession)
        end
      end
    end
  end
end

if ENV['RAILS_ENV'] == 'test' && defined?(ActionController::TestCase::Behavior)
  ActionController::TestCase::Behavior.send :include, Gon::SpecHelper::Rails
end