def test_cannot_create_guest_with_invalid_room_number_type(self, num):
with pytest.raises(ValueError):
Guest("John", num, KeyCard(Key(), Key()))
def test_can_unlock_with_matching_keycard(self):
k1 = Key()
k2 = Key()
keycard = KeyCard(k1, k2)
lock = Lock(k1, k2)
assert lock.can_be_unlocked(keycard)