instance method reset!

# File actionpack/lib/action_dispatch/testing/integration.rb, line 194
      def reset!
        @https = false
        @controller = @request = @response = nil
        @_mock_session = nil
        @request_count = 0

        self.host        = DEFAULT_HOST
        self.remote_addr = "127.0.0.1"
        self.accept      = "text/xml,application/xml,application/xhtml+xml," +
                           "text/html;q=0.9,text/plain;q=0.8,image/png," +
                           "*/*;q=0.5"

        unless defined? @named_routes_configured
          # install the named routes in this session instance.
          klass = singleton_class

          # the helpers are made protected by default--we make them public for
          # easier access during testing and troubleshooting.
          @named_routes_configured = true
        end
      end