public async void All() { var mock = new ServiceMockFacade <ICreditCardRepository>(); var records = new List <CreditCard>(); records.Add(new CreditCard()); mock.RepositoryMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult(records)); 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); List <ApiCreditCardResponseModel> response = await service.All(); response.Should().HaveCount(1); mock.RepositoryMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>())); }