public void Integrate_Always_PerformsExpectedIntegration()
{
// Setup
var random = new Random(21);
AircraftState state = CreateAircraftState();
AircraftAccelerations accelerations = CreateAircraftAccelerations();
double timeStep = random.NextDouble();
// Call
AircraftState resultingState = new EulerIntegrator().Integrate(state, accelerations, timeStep);
// Assert
Assert.AreEqual(ExpectedIntegratedValue(state.Height, accelerations.ClimbRate, timeStep),
resultingState.Height);
Assert.AreEqual(ExpectedIntegratedValue(state.TrueAirspeed, accelerations.TrueAirSpeedRate, timeStep),
resultingState.TrueAirspeed);
Assert.AreEqual(ExpectedIntegratedValue(state.Distance, state.TrueAirspeed, timeStep),
resultingState.Distance);
Assert.AreEqual(ExpectedIntegratedValue(state.FlightPathAngle, accelerations.FlightPathRate, timeStep),
resultingState.FlightPathAngle);
Assert.AreEqual(ExpectedIntegratedValue(state.PitchAngle, accelerations.PitchRate, timeStep),
resultingState.PitchAngle);
}
