public async void Update() { var mock = new ServiceMockFacade <IVotesRepository>(); var model = new ApiVotesRequestModel(); mock.RepositoryMock.Setup(x => x.Create(It.IsAny <Votes>())).Returns(Task.FromResult(new Votes())); mock.RepositoryMock.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult(new Votes())); var service = new VotesService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.VotesModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLVotesMapperMock, mock.DALMapperMockFactory.DALVotesMapperMock); UpdateResponse <ApiVotesResponseModel> response = await service.Update(default(int), model); response.Should().NotBeNull(); mock.ModelValidatorMockFactory.VotesModelValidatorMock.Verify(x => x.ValidateUpdateAsync(It.IsAny <int>(), It.IsAny <ApiVotesRequestModel>())); mock.RepositoryMock.Verify(x => x.Update(It.IsAny <Votes>())); }