public async void All() { var mock = new ServiceMockFacade <IFeedRepository>(); var records = new List <Feed>(); records.Add(new Feed()); mock.RepositoryMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult(records)); var service = new FeedService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.FeedModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLFeedMapperMock, mock.DALMapperMockFactory.DALFeedMapperMock); List <ApiFeedResponseModel> response = await service.All(); response.Should().HaveCount(1); mock.RepositoryMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>())); }