def test_return_part():
me = InventoryManager()
bin = Bin("C1", 123456)
part = Part("wloo cs coop", 10, "kljhee", bin.id)
user = User("*****@*****.**", 59487162)
me.sign_out(part, 8, user)
me.return_part(part, 4, user)
assert bin.qty_in_bin == 6
assert len(me.logs) == 4
me.return_part(part, 2, user)
assert bin.qty_in_bin == 8
assert len(me.logs) == 5
def test_sign_out():
me = InventoryManager()
user_a = User("*****@*****.**", 12344)
user_b = User("*****@*****.**", 12344)
bin_a = Bin("A1", 12345)
bin_b = Bin("B1", 41325)
part_a = Part("motor", 2, "1j343g", bin_a.id)
part_b = Part("sensor", 10, "4h935y", bin_b.id)
me.sign_out(part_a, 2, user_a)
assert bin_a.qty_in_bin == 0
assert len(me.logs) == 1
me.sign_out(part_b, 4, user_b)
assert bin_b.qty_in_bin == 6
assert len(me.logs) == 2