class Rack::MockResponse

def parse_cookies_from_header
  cookies = Hash.new
  if headers.has_key? 'set-cookie'
    set_cookie_header = headers.fetch('set-cookie')
    Array(set_cookie_header).each do |header_value|
      header_value.split("\n").each do |cookie|
        cookie_name, cookie_filling = cookie.split('=', 2)
        cookie_attributes = identify_cookie_attributes cookie_filling
        parsed_cookie = Cookie.new(
          'name' => cookie_name.strip,
          'value' => cookie_attributes.fetch('value'),
          'path' => cookie_attributes.fetch('path', nil),
          'domain' => cookie_attributes.fetch('domain', nil),
          'expires' => cookie_attributes.fetch('expires', nil),
          'secure' => cookie_attributes.fetch('secure', false)
        )
        cookies.store(cookie_name, parsed_cookie)
      end
    end
  end
  cookies
end