public async void All() { var mock = new ServiceMockFacade <IWorkOrderRepository>(); var records = new List <WorkOrder>(); records.Add(new WorkOrder()); mock.RepositoryMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult(records)); var service = new WorkOrderService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.WorkOrderModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLWorkOrderMapperMock, mock.DALMapperMockFactory.DALWorkOrderMapperMock, mock.BOLMapperMockFactory.BOLWorkOrderRoutingMapperMock, mock.DALMapperMockFactory.DALWorkOrderRoutingMapperMock); List <ApiWorkOrderResponseModel> response = await service.All(); response.Should().HaveCount(1); mock.RepositoryMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>())); }