xml_http_request

# File actionpack/lib/action_controller/test_case.rb, line 541
      def xml_http_request(request_method, action, parameters = nil, session = nil, flash = nil)
        @request.env['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest'
        @request.env['HTTP_ACCEPT'] ||=  [Mime::JS, Mime::HTML, Mime::XML, 'text/xml', Mime::ALL].join(', ')
        __send__(request_method, action, parameters, session, flash).tap do
          @request.env.delete 'HTTP_X_REQUESTED_WITH'
          @request.env.delete 'HTTP_ACCEPT'
        end
      end