[Python] Add promotion to basket

python/src/basket_informations.py

@@ -2,13 +2,21 @@ class BasketInformations:
     # The product of the basket
     map = {}
 
-    def add_product_to_basket(self, product, price):
-        BasketInformations.map[product] = price
+    # The fact that the basket has promo code
+    code_de_promotion = False
+
+    def add_product_to_basket(self, product, price, is_promo_code):
+        if is_promo_code:
+            BasketInformations.code_de_promotion = True
+        else:
+            BasketInformations.map[product] = price
 
     def get_basket_price(self, in_cents):
         v = 0
         for s in BasketInformations.map.values():
             v += s
+        if BasketInformations.code_de_promotion:
+            v -= 100
         return v * 100 if in_cents else Long(v)
 
     def reset_basket(self):

python/test/basket_informations_test.py

@@ -10,5 +10,5 @@ def test_a_basket_should_cost_0_when_empty(self):
         self.assertEqual(self.basket.get_basket_price(False), 0)
 
     def test_1000_otherwise(self):
-        self.basket.add_product_to_basket("product", 1000)
+        self.basket.add_product_to_basket("product", 1000, False)
         self.assertEqual(self.basket.get_basket_price(False), 1000)