def test_calculate_product_discount_percentage(self):
store = Store('effect', 123, 123, None, None)
discount = DiscountService()
apple = Product('apple', 'fruit', ['green', 'sweet'], 5)
shopping_cart = ShoppingCart(store)
start_date = datetime.datetime(2016, 2, 1, 12, 12, 12, 12)
end_date = datetime.datetime(2020, 2, 1, 12, 12, 12, 12)
discount.store_discount = ('StoreDiscount', 10, True, start_date,
end_date)
discount.add_product_discount(apple,
20,
True,
start_date,
end_date,
coupon_code=123)
x = discount.calculate_product_discount_percentage(
apple, shopping_cart)
self.assertEqual(x[0], 30)
self.assertEqual(x[1], ['CouponDiscount', 'StoreDiscount'])
discount.add_product_discount(apple, 45, False, start_date, end_date)
x = discount.calculate_product_discount_percentage(
apple, shopping_cart)
self.assertEqual(x[0], 45)
self.assertEqual(x[1], ['RegularDiscount'])
class ShoppingCart:
def __init__(self, store_number, products):
self.store_number = store_number
self.products = products
self.discount_service = None
self.build_discount_service()
def build_discount_service(self):
self.discount_service = DiscountService()
discount = get_reg_discount_of_store_db(self.store_number)
if not (discount is False):
self.discount_service.add_store_discount(
discount[1], discount[2],
datetime.datetime.strptime(discount[3], '%Y-%m-%d'),
datetime.datetime.strptime(discount[4], '%Y-%m-%d'))
for p in self.products:
discount = get_reg_discount_of_product_db(p[0])
print('discount: ', discount)
if not (discount is False):
self.discount_service.add_product_discount(
discount[0], discount[1], discount[2],
datetime.datetime.strptime(discount[3], '%Y-%m-%d'),
datetime.datetime.strptime(discount[4], '%Y-%m-%d'))
discount = get_cond_discount_of_product_db(p[0])
if not (discount is False):
self.discount_service.add_product_discount(
discount[0],
discount[1],
discount[2],
datetime.datetime.strptime(discount[3], '%Y-%m-%d'),
datetime.datetime.strptime(discount[4], '%Y-%m-%d'),
condition=(discount[5], p[0], discount[6]))
discount = get_coupon_discount_of_product_db(p[0])
if not (discount is False):
self.discount_service.add_product_discount(
discount[0],
discount[1],
discount[2],
datetime.datetime.strptime(discount[3], '%Y-%m-%d'),
datetime.datetime.strptime(discount[4], '%Y-%m-%d'),
coupon_code=123)
print('\nproduct_discount_table: ',
self.discount_service.product_discount_table)
print('\nstore_discount: ', self.discount_service.store_discount)
def calculate_price(self):
price_sum = 0
for product_dict in self.products:
discount_percentage = \
self.discount_service.calculate_product_discount_percentage(product_dict[0], self)
discount_percentage = discount_percentage[0]
print('\ndiscount_percentage:', discount_percentage)
if discount_percentage > 80:
discount_percentage = 80
price_sum += (product_dict[2] * (
(100 - discount_percentage) / 100)) * product_dict[1]
return price_sum
def contains_product(self, catalog_number):
for p in self.products:
if p[0] == catalog_number:
return True
return False