public async void BreedsBySpeciesId_Not_Exists() { var mock = new ServiceMockFacade <ISpeciesService, ISpeciesRepository>(); mock.RepositoryMock.Setup(x => x.BreedsBySpeciesId(default(int), It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <Breed> >(new List <Breed>())); var service = new SpeciesService(mock.LoggerMock.Object, mock.MediatorMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.SpeciesModelValidatorMock.Object, mock.DALMapperMockFactory.DALSpeciesMapperMock, mock.DALMapperMockFactory.DALBreedMapperMock); List <ApiBreedServerResponseModel> response = await service.BreedsBySpeciesId(default(int)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.BreedsBySpeciesId(default(int), It.IsAny <int>(), It.IsAny <int>())); }