def test_adding_shipping_costs_work(self):
api = ShippingAPI()
api.add_shipping_costs(self.order, self.shipping_label,
self.shipping_value)
self.assertEqual(self.order.shipping_costs, self.shipping_value)
self.assertEqual(self.order.order_total,
(self.order.order_subtotal + self.shipping_value))
def test_adding_shipping_costs_work(self):
api = ShippingAPI()
api.add_shipping_costs(self.order, self.shipping_label,
self.shipping_value)
self.assertEqual(self.order.shipping_costs, self.shipping_value)
self.assertEqual(self.order.order_total, (self.order.order_subtotal +
self.shipping_value))
def test_adding_shipping_costs_twice_works(self):
# That should test against #39 regressions
api = ShippingAPI()
api.add_shipping_costs(self.order, self.shipping_label, self.shipping_value)
api.add_shipping_costs(self.order, self.shipping_label, self.shipping_value)
self.assertEqual(self.order.shipping_costs, self.shipping_value)
self.assertEqual(self.order.order_total, (self.order.order_subtotal +
self.shipping_value))
def test_adding_shipping_costs_twice_works(self):
# That should test against #39 regressions
api = ShippingAPI()
api.add_shipping_costs(self.order, self.shipping_label, self.shipping_value)
api.add_shipping_costs(self.order, self.shipping_label, self.shipping_value)
self.assertEqual(self.order.shipping_costs, self.shipping_value)
self.assertEqual(self.order.order_total, (self.order.order_subtotal +
self.shipping_value))
def test_get_order_returns_sensible_nulls(self):
class MockRequest():
user = self.user
be = ValidMockShippingBackend(shop=ShippingAPI())
order = be.shop.get_order(MockRequest())
self.assertEqual(order, None)
def setUp(self):
self.backend = FlatRateShipping(shop=ShippingAPI())
self.user = User.objects.create(username="******",
email="*****@*****.**")
self.request = Mock()
setattr(self.request, 'user', self.user)
class BackendsPool(object):
"""
A pool for backends.
It handles loading backend modules (both shipping and payment backends), and
keeping a cached copy of the classes in-memory (so that the backends aren't
loaded from file every time one requests them)
"""
SHIPPING = 'SHOP_SHIPPING_BACKENDS'
PAYMENT = 'SHOP_PAYMENT_BACKENDS'
PAYMENT_SHOP_INTERFACE = PaymentAPI()
SHIPPING_SHOP_INTERFACE = ShippingAPI()
def __init__(self, use_cache=True):
"""
The use_cache parameter is mostly used for testing, since setting it
to false will trigger reloading from disk
"""
self._payment_backends_list = []
self._shippment_backends_list = []
self.use_cache = use_cache
def get_payment_backends_list(self):
"""
Returns the list of payment backends, as instances, from the list of
backends defined in settings.SHOP_PAYMENT_BACKENDS
"""
if self._payment_backends_list and self.use_cache:
return self._payment_backends_list
else:
self._payment_backends_list = self._load_backends_list(
self.PAYMENT, self.PAYMENT_SHOP_INTERFACE)
return self._payment_backends_list
def get_shipping_backends_list(self):
"""
Returns the list of shipping backends, as instances, from the list of
backends defined in settings.SHOP_SHIPPING_BACKENDS
"""
if self._shippment_backends_list and self.use_cache:
return self._shippment_backends_list
else:
self._shippment_backends_list = self._load_backends_list(
self.SHIPPING, self.SHIPPING_SHOP_INTERFACE)
return self._shippment_backends_list
def _check_backend_for_validity(self, backend_instance):
"""
This enforces having a valid name and url namespace defined.
Backends, both shipping and payment are namespaced in respectively
/pay/ and /ship/ URL spaces, so as to avoid name clashes.
"Namespaces are one honking great idea -- let's do more of those!"
"""
backend_name = getattr(backend_instance, 'backend_name', "")
if not backend_name:
d_tuple = (str(backend_instance), str(type(backend_instance)))
raise NotImplementedError(
'One of your backends ("%s" of type "%s") lacks a name, please define one.'
% d_tuple)
url_namespace = getattr(backend_instance, 'url_namespace', "")
if not url_namespace:
raise NotImplementedError(
'Please set a namespace for backend "%s"' %
backend_instance.backend_name)
def _load_backends_list(self, setting_name, shop_object):
""" This actually loads the backends from disk"""
result = []
if not getattr(settings, setting_name, None):
return result
for backend_path in getattr(settings, setting_name, None):
# The load_class function takes care of the classloading. It returns
# a CLASS, not an INSTANCE!
mod_class = load_class(backend_path, setting_name)
# Seems like it is a real, valid class - let's instanciate it!
# This is where the backends receive their self.shop reference!
mod_instance = mod_class(shop=shop_object)
self._check_backend_for_validity(mod_instance)
# The backend seems valid (nothing raised), let's add it to the
# return list.
result.append(mod_instance)
return result