new

# File actionpack/lib/action_dispatch/testing/integration.rb, line 404
          def initialize(mime_name, param_encoder, response_parser, url_encoded_form = false)
            @mime = Mime[mime_name]

            unless @mime
              raise ArgumentError, "Can't register a request encoder for "                  "unregistered MIME Type: #{mime_name}. See `Mime::Type.register`."
            end

            @url_encoded_form = url_encoded_form
            @path_format      = ".#{@mime.symbol}" unless @url_encoded_form
            @response_parser  = response_parser || -> body { body }
            @param_encoder    = param_encoder   || :"to_#{@mime.symbol}".to_proc
          end