public void TestAmountOfFreePlaces()
{
IVehicle bus = new VehicleBus();
IPerson civilian = new Person(Constants.PERSON_TYPE_COMMON);
IPerson police = new Person(Constants.PERSON_TYPE_POLICE);
IPerson firefighter = new Person(Constants.PERSON_TYPE_FIREFIGHTER);
IPerson civilian2 = new Person(Constants.PERSON_TYPE_COMMON);
IPerson civilian3 = new Person(Constants.PERSON_TYPE_COMMON);
bus.AddPassenger(civilian);
bus.AddPassenger(civilian2);
bus.AddPassenger(civilian3);
bus.AddPassenger(police);
bus.AddPassenger(firefighter);
Assert.IsTrue(bus.HasFreePlace());
Assert.AreEqual(5, bus.GetAmountPassengers());
Assert.AreEqual(Constants.VEHICLE_BUS_LIMIT - 5, bus.GetAmountOfFreePlaces());
}