public IActionResult AddNewFlight(FlightViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return(View("Index", CreateDefaultFlightViewModel(model.NewFlightDepartureAirport, model.NewFlightArrivalAirport, model.NewFuelConsumptionLitersPerKm, model.NewFuelConsumptionTakeoffEffortInLiters)));
            }

            if (model.NewFlightDepartureAirport == model.NewFlightArrivalAirport)
            {
                ModelState.AddModelError("NewFlightArrivalAirport", "Departure and destination airports can't be the same !");
                return(View("Index", CreateDefaultFlightViewModel(model.NewFlightDepartureAirport, model.NewFlightArrivalAirport, model.NewFuelConsumptionLitersPerKm, model.NewFuelConsumptionTakeoffEffortInLiters)));
            }

            try
            {
                _flightsManager.CreateNewFlight(model.NewFlightDepartureAirport, model.NewFlightArrivalAirport, model.NewFuelConsumptionLitersPerKm, model.NewFuelConsumptionTakeoffEffortInLiters);
            }
            catch (Exception)
            {
                ModelState.AddModelError("NewFuelConsumptionTakeoffEffortInLiters", "An error occured");
                return(View("Index", CreateDefaultFlightViewModel(model.NewFlightDepartureAirport, model.NewFlightArrivalAirport, model.NewFuelConsumptionLitersPerKm, model.NewFuelConsumptionTakeoffEffortInLiters)));
            }

            return(RedirectToAction(nameof(Index)));
        }
        public void WhenCreatingNewFlight_GivenFlightParameters_ShouldCallCreateFlightCorrectly()
        {
            _databaseMock.Setup(d => d.CreateNewFlight(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <double>(), It.IsAny <double>())).Verifiable();

            _flightsManager.CreateNewFlight(
                _testFlight.Departure.InternalName,
                _testFlight.Destination.InternalName,
                _testFlight.AircraftFuelConsumptionLitersPerKm,
                _testFlight.AircraftFuelConsumptionTakeoffEffort);

            _databaseMock.Verify(d => d.CreateNewFlight(
                                     _testFlight.Departure.InternalName,
                                     _testFlight.Destination.InternalName,
                                     _testFlight.AircraftFuelConsumptionLitersPerKm,
                                     _testFlight.AircraftFuelConsumptionTakeoffEffort),
                                 Times.Once);
        }