# File lib/rack/test.rb, line 35
      def initialize(mock_session)
        @headers = {}
        @env = {}
        @digest_username = nil
        @digest_password = nil

        if mock_session.is_a?(MockSession)
          @rack_mock_session = mock_session
        else
          @rack_mock_session = MockSession.new(mock_session)
        end

        @default_host = @rack_mock_session.default_host
      end