public void ValidationForeignId_Should_ReturnTrue_When_AircraftFlightCrewExist()
        {
            A.CallTo(() => _fakeUnitOfWork.AircraftRepository.Get(null)).Returns(new List <Aircraft> {
                _departure.Aircraft
            });
            A.CallTo(() => _fakeUnitOfWork.FlightRepository.Get(null)).Returns(new List <Flight> {
                _departure.Flight
            });
            A.CallTo(() => _fakeUnitOfWork.CrewRepository.Get(null)).Returns(new List <Crew> {
                _departure.Crew
            });
            var result = _departureService.ValidationForeignId(_departureDTO);

            Assert.IsTrue(result);
        }