def get_total(self):
discounted_prices = discount_engine(self.cart)
total = 0.00
for item, units in self.cart.items():
regular_price = priceRepository[item] * units
discount_price = discounted_prices[item]
total += min(regular_price, discount_price)
return total
def test_discount_engine_one_item_cart_no_valid_discount(self):
results = {'Ground Beef': 9999.99}
self.assertEqual(results, discount_engine({"Ground Beef": 1}))
def test_discount_engine_empty_cart(self):
self.assertEqual(discount_engine({}), {})
def test_no_discounts(self):
results = discount_engine({"Bread": 1.0})
self.assertEqual(results, {"Bread": 9999.99})
def test_weighted_item_n_for_m(self):
results = discount_engine({"Ground Beef": 1.0, "Chicken": 1.0})
self.assertEqual(results, {
"Ground Beef": 9999.99,
"Chicken": 2.70
}) # Ground beef wont have a discount, but chicken will
def test_multiple_of_same_discount(self):
results = discount_engine({"Coke": 6})
self.assertEqual(results, {'Coke': 6.00})
def test_n_for_m_fixed(self):
results = discount_engine({"Milk": 2})
self.assertEqual(results, {'Milk': 7.00})
def test_multiple_valid_discounts(self):
results = discount_engine({"Mustard": 3})
self.assertEqual(results, {'Mustard': 3.00})
def test_ten_percent_off_discount(self):
self.assertEqual({'Chicken Soup': 3.582},
discount_engine({"Chicken Soup": 2}))
self.assertEqual({'Chicken Soup': 5.373},
discount_engine({"Chicken Soup": 3}))
def test_discount_engine_items_cart_with_valid_discount(self):
results = discount_engine({"Gum": 4})
self.assertEqual(results, {'Gum': .75})
def test_discount_engine_items_cart_with_valid_discount(self):
results = {'Gum': .5}
self.assertEqual(results, discount_engine({"Gum": 3}))