def test_spend_to_user_to_himself_should_go_to_total_accumulated(self):
"""
When a user spends his own Guzis to himself, before they become
outdated, then they are added to total_accumulated
"""
user = User("", None)
for i in range(10):
user.create_daily_guzis(date(2010, 2, i + 1))
user.spend_to(user, 10)
self.assertEqual(len(user.guzi_wallet), 0)
self.assertEqual(len(user.balance.income), 0)
self.assertEqual(len(user.balance.outcome), 0)
self.assertEqual(len(user.total_accumulated), 10)
def test_spend_to_takes_older_guzis_first(self):
"""
When a user pays, his oldest Guzis should be spended first
to avoid constant outdate
"""
source = User("source", None)
target = User("target", None)
for i in range(31):
source.create_daily_guzis(date(2010, 1, i + 1))
source.spend_to(target, 10)
# After spending, user waits 9 days more (to be at 30)
for i in range(10):
source.create_daily_guzis(date(2010, 2, i + 1))
# Then, of oldest have been taken, there should have no outdated
# Guzi which passed to the total_accumulated
source.check_outdated_guzis(date(2010, 2, 9))
self.assertEqual(len(source.total_accumulated), 0)
def test_spend_to_should_correctly_transfert_guzis(self):
"""
If a user source spends guzi to an target one, source must lose his
guzis from his guzi_wallet and target should have guzi_wallet unchanged
while his balance_income has increased of the amount
"""
source = User("source", None)
target = User("target", None)
for i in range(10):
source.create_daily_guzis(date(2010, 1, i + 1))
self.assertEqual(len(source.guzi_wallet), 10)
self.assertEqual(len(target.guzi_wallet), 0)
self.assertEqual(len(target.balance.income), 0)
source.spend_to(target, 7)
self.assertEqual(len(source.guzi_wallet), 3)
self.assertEqual(len(target.guzi_wallet), 0)
self.assertEqual(len(target.balance.income), 7)
def test_spend_to_should_raise_error_if_amount_is_negative(self):
user = User("id", None)
with self.assertRaises(ValueError):
user.spend_to(None, -10)
def test_spend_to_should_raise_error_if_user_cannot_afford_it(self):
user = User("id", None)
with self.assertRaises(ValueError):
user.spend_to(None, 10)