class HTTParty::Request

def validate
  raise HTTParty::RedirectionTooDeep.new(last_response), 'HTTP redirects too deep' if options[:limit].to_i <= 0
  raise ArgumentError, 'only get, post, patch, put, delete, head, and options methods are supported' unless SupportedHTTPMethods.include?(http_method)
  raise ArgumentError, ':headers must be a hash' if options[:headers] && !options[:headers].respond_to?(:to_hash)
  raise ArgumentError, 'only one authentication method, :basic_auth or :digest_auth may be used at a time' if options[:basic_auth] && options[:digest_auth]
  raise ArgumentError, ':basic_auth must be a hash' if options[:basic_auth] && !options[:basic_auth].respond_to?(:to_hash)
  raise ArgumentError, ':digest_auth must be a hash' if options[:digest_auth] && !options[:digest_auth].respond_to?(:to_hash)
  raise ArgumentError, ':query must be hash if using HTTP Post' if post? && !options[:query].nil? && !options[:query].respond_to?(:to_hash)
end