def test_buy_hammer_get_nails_example(self):
"""Test the example as described in the docs
/signals.html#an-example-of-post-add-to-basket"""
# make the products
hammer = SimpleProduct(
title="Hammer",
price="4.99")
hammer.save()
nails = SimpleProduct(
title="Bag of 500 Nails",
price="1.99")
nails.save()
#
def free_nails_with_every_hammer(sender,
instance,
basketitem,
**kwargs):
if basketitem.content_object.title == 'Hammer':
nails = SimpleProduct.objects.get(title="Bag of 500 Nails")
instance.add(nails,
price=Decimal("0.00"),
description="Free nails with every hammer",
silent=True,
locked=True)
# connect signal
post_add_to_basket.connect(free_nails_with_every_hammer,
dispatch_uid='free_nails')
# basket has zero
self.assertEqual(0, self.basket.total_items())
# add hammer
basketitem = self.basket.add(hammer)
# now have two items
self.assertEqual(2, self.basket.total_items())
# 1st: hammer, 1 , 4.99, locked=False
self.assertEqual(
self.basket.basketitem_set.all()[0].description,
"Hammer")
self.assertEqual(1, self.basket.basketitem_set.filter(
description="Hammer").count())
self.assertEqual(
self.basket.basketitem_set.all()[0].price,
Decimal("4.99"))
self.assertEqual(
self.basket.basketitem_set.all()[0].locked,
False)
# 2nd: free nails, 1 , 0.00, locked=True
self.assertEqual(
self.basket.basketitem_set.all()[1].description,
"Free nails with every hammer")
self.assertEqual(1, self.basket.basketitem_set.filter(
description="Free nails with every hammer").count())
self.assertEqual(
self.basket.basketitem_set.all()[1].price,
Decimal("0.00"))
self.assertEqual(
self.basket.basketitem_set.all()[1].locked,
True)
# disconnect
post_add_to_basket.disconnect(dispatch_uid='free_nails')
def test_pre_add_to_basket_kwargs(self):
"""Test pre_add_to_basket is sent"""
# disconnect the post add to baskets
post_add_to_basket.disconnect(dispatch_uid='post_test_rec')
# were using a global
global test_dict
# connect the signal
pre_add_to_basket.connect(test_receiver, dispatch_uid='pre_test_rec')
# test_dict is empty
self.assertEqual(test_dict.keys(), [])
# add a product to the basket
basketitem = self.basket.add(self.item, quantity=2)
# test_dict now has all the right keys
self.assertEqual(test_dict['signal'], pre_add_to_basket)
self.assertEqual(test_dict['sender'], Basket)
self.assertEqual(test_dict['instance'], self.basket)
self.assertEqual(test_dict['item'].title, self.item.title)
self.assertEqual(test_dict['quantity'], 2)
def tearDown(self):
global test_dict
test_dict = {}
# disconnect signals
pre_add_to_basket.disconnect(dispatch_uid='pre_test_rec')
post_add_to_basket.disconnect(dispatch_uid='post_test_rec')