public async void Pets_Not_Exists() { var mock = new ServiceMockFacade <ISpeciesRepository>(); mock.RepositoryMock.Setup(x => x.Pets(default(int), It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <Pet> >(new List <Pet>())); var service = new SpeciesService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.SpeciesModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLSpeciesMapperMock, mock.DALMapperMockFactory.DALSpeciesMapperMock, mock.BOLMapperMockFactory.BOLPetMapperMock, mock.DALMapperMockFactory.DALPetMapperMock); List <ApiPetResponseModel> response = await service.Pets(default(int)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.Pets(default(int), It.IsAny <int>(), It.IsAny <int>())); }