def test_to_json():
h = HanoiState(4, 0, 2)
j = json.loads(h.to_json())
assert isinstance(j['sessionId'], int)
assert j['numberOfDiscs'] == 4
assert j['fromTower'] == 0
assert j['toTower'] == 2
assert j['numberOfMoves'] == 0
assert j['towers'] == [15, 0, 0]
def test_init_happy_path():
h = HanoiState(4, 0, 2)
assert h.numberOfDiscs == 4
assert h.source == 0
assert h.target == 2
assert h.numberOfMoves == 0
assert h.tower[0] == 0b1111
assert h.tower[1] == 0b0000
assert h.tower[2] == 0b0000
def __init__(self, numberOfDiscs, source, target):
'''Initialize a Hanoi object'''
self._state = HanoiState(numberOfDiscs, source, target)
self._lock = threading.Lock()
def test_init_source_eq_target():
with pytest.raises(ValueError, match=r"source may not equal target"):
h = HanoiState(1, 0, 0)
def test_init_target_gt2():
with pytest.raises(ValueError, match=r"target 3 is invalid"):
h = HanoiState(1, 0, 3)
def test_init_target_n1():
with pytest.raises(ValueError, match=r"target -1 is invalid"):
h = HanoiState(1, 0, -1)
def test_init_source_gt2():
with pytest.raises(ValueError, match=r"source 3 is invalid"):
h = HanoiState(1, 3, 2)
def test_init_source_n1():
with pytest.raises(ValueError, match=r"source -1 is invalid"):
h = HanoiState(1, -1, 2)
def test_init_numberOfDiscs_gt64():
with pytest.raises(ValueError, match=r"numberOfDiscs 65 is invalid"):
h = HanoiState(65, 0, 2)
def test_init_numberOfDiscs_n1():
with pytest.raises(ValueError, match=r"numberOfDiscs -1 is invalid"):
h = HanoiState(-1, 0, 2)