public async void PipelineStepDestinations_Not_Exists() { var mock = new ServiceMockFacade <IDestinationRepository>(); mock.RepositoryMock.Setup(x => x.PipelineStepDestinations(default(int), It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <PipelineStepDestination> >(new List <PipelineStepDestination>())); var service = new DestinationService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.DestinationModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLDestinationMapperMock, mock.DALMapperMockFactory.DALDestinationMapperMock, mock.BOLMapperMockFactory.BOLPipelineStepDestinationMapperMock, mock.DALMapperMockFactory.DALPipelineStepDestinationMapperMock); List <ApiPipelineStepDestinationResponseModel> response = await service.PipelineStepDestinations(default(int)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.PipelineStepDestinations(default(int), It.IsAny <int>(), It.IsAny <int>())); }