public async void ByCardNumber_Not_Exists()
{
var mock = new ServiceMockFacade <ICreditCardRepository>();
mock.RepositoryMock.Setup(x => x.ByCardNumber(It.IsAny <string>())).Returns(Task.FromResult <CreditCard>(null));
var service = new CreditCardService(mock.LoggerMock.Object,
mock.RepositoryMock.Object,
mock.ModelValidatorMockFactory.CreditCardModelValidatorMock.Object,
mock.BOLMapperMockFactory.BOLCreditCardMapperMock,
mock.DALMapperMockFactory.DALCreditCardMapperMock,
mock.BOLMapperMockFactory.BOLSalesOrderHeaderMapperMock,
mock.DALMapperMockFactory.DALSalesOrderHeaderMapperMock);
ApiCreditCardResponseModel response = await service.ByCardNumber(default(string));
response.Should().BeNull();
mock.RepositoryMock.Verify(x => x.ByCardNumber(It.IsAny <string>()));
}