url_helpers_in_test_patch.rb

if Rails.env.test?
  module ActionDispatch
    module Routing
      module UrlFor
        alias_method :original_url_options, :url_options

        def url_options
          if self.respond_to? :request
            original_url_options.merge({:host => request.host, :port => request.port})
          else
            original_url_options
          end
        end
      end
    end
  end
end