public void StewardessCreate()
        {
            StewardessService stewardessService = new StewardessService(unitOfWork);

            StewardessDTO stewardessDTO = new StewardessDTO()
            {
                Name    = "stewCreateTest",
                Surname = "stewCreateTest",
                Birth   = new DateTime(1990, 1, 1)
            };

            stewardessService.CreateStewardess(stewardessDTO);
            Stewardess stewardess = fakeStewardessRepository.Get(1);

            Assert.AreEqual(stewardess.Name, stewardessDTO.Name);
            Assert.AreEqual(stewardess.Surname, stewardessDTO.Surname);
            Assert.AreEqual(stewardess.Birth, stewardessDTO.Birth);
        }