public async void ByChainId_Not_Exists() { var mock = new ServiceMockFacade <ILinkService, ILinkRepository>(); mock.RepositoryMock.Setup(x => x.ByChainId(It.IsAny <int>(), It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <Link> >(new List <Link>())); var service = new LinkService(mock.LoggerMock.Object, mock.MediatorMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.LinkModelValidatorMock.Object, mock.DALMapperMockFactory.DALLinkMapperMock, mock.DALMapperMockFactory.DALLinkLogMapperMock); List <ApiLinkServerResponseModel> response = await service.ByChainId(default(int)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.ByChainId(It.IsAny <int>(), It.IsAny <int>(), It.IsAny <int>())); }