public void Update_Valid()
        {
            //arange
            StewardessesService service = new StewardessesService(unitOfWork, mapper, validator);

            var expected = new Stewardess
            {
                Id = 1, CrewId = 1, FirstName = "Ivan", LastName = "Ivanov", Birthday = new DateTime(1987, 1, 24)
            };

            var DtoToMake = new StewardessDto
            {
                Id = 1, CrewId = 1, FirstName = "Ivan", LastName = "Ivanov", Birthday = new DateTime(1987, 1, 24)
            };


            //act
            service.Update(DtoToMake);

            var actual = (unitOfWork.Set <Stewardess>() as FakeRpository <Stewardess>).updatedItem;

            //assert
            Assert.AreEqual(expected.Id, actual.Id);
            Assert.AreEqual(expected.CrewId, actual.CrewId);
            Assert.AreEqual(expected.FirstName, actual.FirstName);
            Assert.AreEqual(expected.LastName, actual.LastName);
            Assert.AreEqual(expected.Birthday, actual.Birthday);
        }
        public void Update_UnValid()
        {
            //arange
            StewardessesService service = new StewardessesService(unitOfWork, mapper, validator);

            var DtoToMake = new StewardessDto
            {
                Id = 1, CrewId = 1, FirstName = "an", LastName = "ov", Birthday = new DateTime(1987, 1, 24)
            };

            //act
            service.Update(DtoToMake);

            var actual = (unitOfWork.Set <Stewardess>() as FakeRpository <Stewardess>).updatedItem;

            //assert
            Assert.IsNull(actual);
        }