def test_crashing_into_right_wall():
patient = Road(1, Car(3, 1), [])
successors = list(patient.successors(RIGHT))
assert len(successors) == 1
s, p = successors[0]
assert p == 1.0
assert s.to_key() != patient.to_key()
assert s.to_key() == (-1, 0, frozenset())
assert s.to_s() == ' ' * 7 + '\n' + ' ' * 7
def test_car_has_crashed(col):
patient = Road(4, Car(col, 1), [])
assert patient.has_crashed()
assert patient.has_crashed(Car(col, 1))
assert not patient.has_crashed(Car(0, 1))
assert patient.to_key() == (-1, 0, frozenset())
for action in ACTIONS:
successors, probs = zip(*patient.successors(action))
assert [s.to_key() for s in successors] == [(-1, 0, frozenset())]
assert sum(probs) == pytest.approx(1.0)