public void GetById_Negative_ArgumentException() { //Arrange ICrewRepository crewRepository = new CrewRepository(); ICrewService crewService = new CrewService(crewRepository); CrewController crewController = new CrewController(crewService); const int NegativeId = -1; //Act & Assert Assert.ThrowsExceptionAsync <ArgumentException>(() => crewController.GetById(NegativeId)); }