public void CitiesConnectInvert()
        {
            string s = CommunicationValidation.IsCitiesDirect(CityEnum.TANGER, CityEnum.TUNIS);

            NoError(s);
        }
        public void CitiesNotConnect()
        {
            string s = CommunicationValidation.IsCitiesDirect(CityEnum.SUAKIN, CityEnum.TANGER);

            IsError(s);
        }