public async void All() { var mock = new ServiceMockFacade <IProductModelRepository>(); var records = new List <ProductModel>(); records.Add(new ProductModel()); mock.RepositoryMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult(records)); var service = new ProductModelService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.ProductModelModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLProductModelMapperMock, mock.DALMapperMockFactory.DALProductModelMapperMock, mock.BOLMapperMockFactory.BOLProductMapperMock, mock.DALMapperMockFactory.DALProductMapperMock, mock.BOLMapperMockFactory.BOLProductModelProductDescriptionCultureMapperMock, mock.DALMapperMockFactory.DALProductModelProductDescriptionCultureMapperMock); List <ApiProductModelResponseModel> response = await service.All(); response.Should().HaveCount(1); mock.RepositoryMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>())); }