public void EditVacancy_EditVacancy_ShoudRepositoryEditOnce() { //arrange var Vacancy = new VacancyDTO { Id = It.IsAny <int>(), ContName = It.IsAny <string>(), ContPhone = It.IsAny <string>() }; VacancyRepository.Setup(x => x.Get(It.IsAny <int>())).Returns(new Vacancy { Id = It.IsAny <int>(), ContPhone = It.IsAny <string>() }); //act & assert Assert.Throws <ArgumentOutOfRangeException>(() => vacService.EditVacancy(Vacancy)); }