def test_date():
prop = DateProperty()
prop.name = 'foo'
prop.owner = FooBar
somedate = date(2012, 12, 15)
assert prop.deflate(somedate) == '2012-12-15'
assert prop.inflate('2012-12-15') == somedate
def test_date():
prop = DateProperty()
prop.name = "foo"
prop.owner = FooBar
somedate = date(2012, 12, 15)
assert prop.deflate(somedate) == "2012-12-15"
assert prop.inflate("2012-12-15") == somedate
def test_date_exceptions():
prop = DateProperty()
prop.name = 'date'
prop.owner = FooBar
faulty = '2012-14-13'
try:
prop.inflate(faulty)
except InflateError as e:
assert 'inflate property' in str(e)
else:
assert False, "InflateError not raised."
try:
prop.deflate(faulty)
except DeflateError as e:
assert 'deflate property' in str(e)
else:
assert False, "DeflateError not raised."
def test_date_exceptions():
prop = DateProperty()
prop.name = 'date'
prop.owner = FooBar
faulty = '2012-14-13'
try:
prop.inflate(faulty)
except InflateError as e:
assert True
assert str(e).index('inflate property')
else:
assert False
try:
prop.deflate(faulty)
except DeflateError as e:
assert True
assert str(e).index('deflate property')
else:
assert False
class Card(BaseModel):
"""
Models a card in database
"""
number = StringProperty(required=True)
due_day = IntegerProperty(required=True)
expiration_date = DateProperty(required=True)
cvv = StringProperty(required=True)
max_limit = FloatProperty(required=True)
free_limit_ = FloatProperty(required=True)
wallet = RelationshipFrom('.wallet.Wallet',
'CONTAINED_BY',
cardinality=One)
purchases = RelationshipFrom('.billing.Purchase',
'DID',
model=BillingAction)
payments = RelationshipFrom('.billing.Payment', 'RECEIVED')
def __init__(self, date_format='%m/%d/%Y', **kwargs):
# Test if all arguments are present
if not all(
k in kwargs for k in
['number', 'due_day', 'expiration_date', 'cvv', 'max_limit']):
raise NotEnoughCardArguments
# set initial free_limit equals to max_limit
kwargs['free_limit_'] = kwargs[
'free_limit_'] if 'free_limit_' in kwargs else kwargs['max_limit']
kwargs['cvv'] = str(kwargs['cvv'])
# as discussed by e-mail, due_day is limited from 1 to 28
if kwargs['due_day'] < 1 or kwargs['due_day'] > 28:
raise ValueError(
'due_date should be limited from 1 to 28 to avoid problems with some months'
)
if type(kwargs['expiration_date']) is str:
kwargs['expiration_date'] = datetime.strptime(
kwargs['expiration_date'], date_format).date()
fake_today = kwargs['fake_today'] if 'fake_today' in kwargs else None
date_format = kwargs[
'date_format'] if 'date_format' in kwargs else '%m/%d/%Y'
super(Card, self).__init__(**kwargs)
self.date_format = '%m/%d/%Y'
self.fake_today = None
self.set_fake_today(fake_today, date_format)
@property
def due_date(self):
"""
Calculate next due date based on actual date and due_day
:return: next due date
"""
due_date = self.get_fake_today().replace(day=self.due_day)
# due date is next month
if self.due_day <= self.fake_today.day:
year = due_date.year + due_date.month // 12
month = due_date.month % 12 + 1
due_date = due_date.replace(month=month, year=year)
return due_date
def set_fake_today(self, fake_today=None, date_format='%m/%d/%Y'):
"""
Assume a fake today date, set for today if None. Useful for tests
and generate reference cards sortings
:param fake_today: date or string representing date to be assumed for today
:param date_format: format for parsing date when fake_today is string
:return:
"""
self.fake_today = fake_today if fake_today else datetime.today().date()
if type(self.fake_today) is str:
self.fake_today = datetime.strptime(fake_today, date_format).date()
self.date_format = date_format
def get_fake_today(self):
return self.fake_today if self.fake_today else datetime.today().date()
@property
def free_limit(self):
"""
Just get free_limit_
:return: free_limit
"""
return self.free_limit_
@free_limit.setter
def free_limit(self, value):
"""
Just to avoid changing free_limit_ directly,
it should be increased or decreased on
each payment
:param value: value to be changed
"""
raise UnchangeableCardValue()
@property
def active(self):
"""
A card should be inactive if it's set to be inactive, or
if reached expiration date
:return:
"""
if self.expiration_date < self.fake_today:
return False
return self.active_
@active.setter
def active(self, state):
"""
Change active state from an user.
Raise warning if state is not changed
:param state:
:return:
"""
if self.active and state:
# raise warning if activating an already active card
warnings.warn(CardAlreadyActive())
elif (not self.active) and (not state):
# raise warning if deactivating an already inactive card
warnings.warn(CardAlreadyInactive())
else:
# Otherwise, process limits
self.active_ = state
if state:
# increase wallet limits if activating the card
self.wallet[0].increase_max_limit(self.max_limit)
self.wallet[0].increase_free_limit(self.max_limit)
else:
# decrease wallet limit if deactivating the card
self.wallet[0].decrease_max_limit(self.max_limit)
self.wallet[0].decrease_free_limit(self.max_limit)
self.save()
def decrease_free_limit(self, value):
"""
Decrease free limit, used on purchasing.
raise NotEnoughCardFreeLimit if free_limit is
not enough
:param value: value to reduce free_limit
:return: new value for free_limit
"""
# if there is not enough free_limit, raise exception
if self.free_limit < value:
raise NotEnoughCardFreeLimit()
# if there is free limit, reduce value amount from it
self.free_limit_ -= value
self.save()
self.wallet.single().decrease_free_limit(value)
self.wallet.single().refresh()
return self.free_limit
def increase_free_limit(self, value):
"""
Increase free limit, used on payment.
raises PaymentExceed when payment value
and free_limit exceed maximum card limit
:param value: value to increase free_limit
:return: new value for free_limit
"""
# raise exception if exceed maximum limit of card
if self.free_limit + value > self.max_limit:
raise PaymentExceed
# if no problem, increase limit
self.free_limit_ = self.free_limit_ + value
self.save()
self.wallet[0].increase_free_limit(value)
self.wallet[0].refresh()
return self.free_limit
def purchase(self, value):
"""
Process a purchase,
raise CardIsInactive if card is inactive
:param value: purchase value
"""
if not self.active:
raise CardIsInactive()
self.decrease_free_limit(value)
self.save()
def pay(self, value):
"""
Release credit increasing free_limit. Raise PaymentExceed if
value+free_limit exceeds max_limit
:param value: payed amount
:return: new free_limit
"""
try:
self.increase_free_limit(value)
payment = Payment(value=value)
payment.save()
# Connect payment to card
payment.card.connect(self)
payment.save()
self.save()
self.payments.connect(payment)
self.save()
# Connect payment to wallet
self.wallet.single().save()
payment.wallet.connect(self.wallet.single())
self.wallet.single().payments.connect(payment)
payment.save()
self.wallet.single().save()
return payment
except Exception as e:
raise e
def to_dict(self):
return dict(uid=self.uid,
due_date=self.due_date,
expiration_date=self.expiration_date,
max_limit=self.max_limit,
free_limit=self.free_limit,
active=self.active)
def __lt__(self, other):
"""
Order cards, first by largest due date,
then by smaller maxmimum limit.
rules defined in https://slack-files.com/T06M9ENDT-F5XK4J0P2-532510c5c0
:param other: other object which is beeing compared
:return: True if is lower, False if is bigger than other
"""
if self.due_date > other.due_date:
return True
elif self.due_date == other.due_date:
return self.max_limit < other.max_limit
else:
return False
def __str__(self):
s = '<Card[limit: {max_limit}, due_day: {due_date}, expiration: {expiration}, cvv: {cvv}]>'
return s.format(max_limit=self.max_limit,
due_date=self.due_date,
expiration=self.due_date,
cvv=self.cvv)