rm.register(pack1);
rm.register(truck);
rm.addObjectAt(pack1, new Point(1, 1));
// nothing should happen
truck.tick(TimeLapseFactory.create(0, 10000));
assertEquals(0, model.getContentsSize(truck), EPSILON);
assertTrue(model.getContents(truck).isEmpty());
assertEquals(ParcelState.AVAILABLE, model.getParcelState(pack1));
assertEquals(VehicleState.IDLE, model.getVehicleState(truck));