public async void Name_Update_null()
        {
            Mock <IDestinationRepository> destinationRepository = new Mock <IDestinationRepository>();

            destinationRepository.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult(new Destination()));

            var validator = new ApiDestinationServerRequestModelValidator(destinationRepository.Object);
            await validator.ValidateUpdateAsync(default(int), new ApiDestinationServerRequestModel());

            validator.ShouldHaveValidationErrorFor(x => x.Name, null as string);
        }
        public async void CountryId_Update_Valid_Reference()
        {
            Mock <IDestinationRepository> destinationRepository = new Mock <IDestinationRepository>();

            destinationRepository.Setup(x => x.CountryByCountryId(It.IsAny <int>())).Returns(Task.FromResult <Country>(new Country()));

            var validator = new ApiDestinationServerRequestModelValidator(destinationRepository.Object);
            await validator.ValidateUpdateAsync(default(int), new ApiDestinationServerRequestModel());

            validator.ShouldNotHaveValidationErrorFor(x => x.CountryId, 1);
        }