def test_journey_waiting_first():
service = CarPooling([(1, 3), (2, 2), (3, 1), (4, 3)])
assert service.journey(1, 6) == 0 # waiting list
assert service.journey(2, 6) == 0 # waiting list
assert service.journey(3, 1) == 3 # allocated (*)
assert service.journey(4, 6) == 0 # waiting list
assert service.drop_off(1) == 1 # drop-off
assert service.drop_off(4) == 4
assert service.drop_off(5) is None # drop-off not found
service.cars([(1, 5), (2, 2), (3, 1), (4, 3), (5, 6),
(6, 4)]) # new car list
assert service.journey(
5, 6) == 0 # waiting list first -> new one go to waiting list
assert service.journey(6, 4) == 6 # new journey request
assert service.journey(7, 6) == 0
assert len(service.journey_request.waiting) == 2 # waiting list not empty
assert service.journey_location.is_allocated(
6) == 6 # check car allocation
assert service.journey_location.is_allocated(
3) == 3 # allocated from previous car list (*)
assert service.journey(8, 3)
assert service.journey_location.is_allocated(
8) == 4 # allocated from new car list
def test_journey_dropoff():
service = CarPooling([(1, 3), (2, 2), (3, 1), (4, 3)])
assert service.journey(1, 6) == 0
assert service.drop_off(1) == 1
assert service.drop_off(1) is None