public void ShouldUpdate()
{
Flight flight = new Flight {
id = 1, Reg = "X"
};
var flights = new ObservableCollection <Flight>();
flights.Add(flight);
flights.Add(new Flight {
id = 2
});
flights.Add(new Flight {
id = 3
});
FlightData.Update(new Flight {
id = 1, Reg = "Y"
}, flights);
var updated = flights.Where(x => x.id == 1).First();
Assert.AreEqual("Y", updated.Reg);
}