new

# File actionpack/lib/action_dispatch/testing/request_encoder.rb, line 16
    def initialize(mime_name, param_encoder, response_parser)
      @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

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