public async Task NoPilotsAvailable_ReturnsNull()
{
SetDefaultNow();
_fileServiceMock.Setup(x => x.GetPilotWorkSchedules()).Returns(Task.FromResult(Enumerable.Empty <PilotWorkSchedule>()));
var request = new PilotScheduleRequest()
{
Location = Base.Berlin,
DepartureDateTime = TwoPm,
ReturnDateTime = FourPm
};
var result = await _service.GetNextAvailablePilot(request);
Assert.Null(result.PilotId);
Assert.Null(result.ReservationKey);
}