public async void GetFlightPlanTest(string id)
{
// Arrange.
IDataAccess demoDataAccess = new DemoDataAccess();
IFlightPlanManager flightPlanManager = new FlightPlanManager(demoDataAccess);
FlightPlanController flightPlanController = new FlightPlanController(flightPlanManager);
// Act.
ActionResult <FlightPlan> actionResult = await flightPlanController.GetItem(id);
ObjectResult result = actionResult.Result as ObjectResult;
FlightPlan actualFlightPlan = result.Value as FlightPlan;
// Assert.
FlightPlan expectedFlightPlan = demoDataAccess.GetFlightPlan(id);
Assert.AreEqual <FlightPlan>(actualFlightPlan, expectedFlightPlan);
}