def test_calculate_not_slow_down_when_circling_the_road():
my_car = Car()
car_in_front = Car()
my_car.speed = 30
my_car.location = 980
car_in_front.speed = 25
car_in_front.location = 20
assert my_car.calculate_slow_down(car_in_front) == False
def test_calculate_slow_down():
my_car = Car()
car_in_front = Car()
my_car.speed = 30
my_car.location = 80
car_in_front.speed = 25
car_in_front.location = 100
assert my_car.calculate_slow_down(car_in_front) == True
