public async void Create() { var mock = new ServiceMockFacade <IProductVendorRepository>(); var model = new ApiProductVendorRequestModel(); mock.RepositoryMock.Setup(x => x.Create(It.IsAny <ProductVendor>())).Returns(Task.FromResult(new ProductVendor())); var service = new ProductVendorService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.ProductVendorModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLProductVendorMapperMock, mock.DALMapperMockFactory.DALProductVendorMapperMock); CreateResponse <ApiProductVendorResponseModel> response = await service.Create(model); response.Should().NotBeNull(); mock.ModelValidatorMockFactory.ProductVendorModelValidatorMock.Verify(x => x.ValidateCreateAsync(It.IsAny <ApiProductVendorRequestModel>())); mock.RepositoryMock.Verify(x => x.Create(It.IsAny <ProductVendor>())); }