public async void Create() { var mock = new ServiceMockFacade <IErrorLogRepository>(); var model = new ApiErrorLogRequestModel(); mock.RepositoryMock.Setup(x => x.Create(It.IsAny <ErrorLog>())).Returns(Task.FromResult(new ErrorLog())); var service = new ErrorLogService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.ErrorLogModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLErrorLogMapperMock, mock.DALMapperMockFactory.DALErrorLogMapperMock); CreateResponse <ApiErrorLogResponseModel> response = await service.Create(model); response.Should().NotBeNull(); mock.ModelValidatorMockFactory.ErrorLogModelValidatorMock.Verify(x => x.ValidateCreateAsync(It.IsAny <ApiErrorLogRequestModel>())); mock.RepositoryMock.Verify(x => x.Create(It.IsAny <ErrorLog>())); }