public async void ByMachinePolicyId_Not_Exists() { var mock = new ServiceMockFacade <IWorkerRepository>(); mock.RepositoryMock.Setup(x => x.ByMachinePolicyId(It.IsAny <string>())).Returns(Task.FromResult <List <Worker> >(new List <Worker>())); var service = new WorkerService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.WorkerModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLWorkerMapperMock, mock.DALMapperMockFactory.DALWorkerMapperMock); List <ApiWorkerResponseModel> response = await service.ByMachinePolicyId(default(string)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.ByMachinePolicyId(It.IsAny <string>())); }