public async void EventTeachersByTeacherId_Not_Exists() { var mock = new ServiceMockFacade <ITeacherService, ITeacherRepository>(); mock.RepositoryMock.Setup(x => x.EventTeachersByTeacherId(default(int), It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <EventTeacher> >(new List <EventTeacher>())); var service = new TeacherService(mock.LoggerMock.Object, mock.MediatorMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.TeacherModelValidatorMock.Object, mock.DALMapperMockFactory.DALTeacherMapperMock, mock.DALMapperMockFactory.DALEventTeacherMapperMock, mock.DALMapperMockFactory.DALRateMapperMock, mock.DALMapperMockFactory.DALTeacherTeacherSkillMapperMock); List <ApiEventTeacherServerResponseModel> response = await service.EventTeachersByTeacherId(default(int)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.EventTeachersByTeacherId(default(int), It.IsAny <int>(), It.IsAny <int>())); }