public void AddPassenger_DoorsClose_PassengerNotAdded()
{
var coach = new Coach();
var passenger = new Passenger();
coach.AddPassenger(passenger);
Assert.AreEqual(0, coach.PassengerCount);
}
public void AddPassenger_DoorsOpen_PassengerAdded()
{
var coach = new Coach();
coach.OpenDoors();
var passenger = new Passenger();
coach.AddPassenger(passenger);
Assert.AreEqual(1, coach.PassengerCount);
}