Shopping

Problem Statement

1. There are items that could be purchase - Apple, Milk and NewsPaper

2. These items could be added to shopping cart

3. Customer has e-wallet

4. Customer purchases items and pays by e-wallet

Promotions Applied

Promotion Providing By E-Wallet

   Wallet Provider is offering a discount of 5% if cost of cost is >= 100

Promotion Providing By Shop

   The shop is running with offer buy 2 liters of milk and get 1 free. And check all valid conditions
  
     1) Buying 1 packet of milk and seeing that no promotion is applied

     2) Buying 4 packets of milk and seeing 2 milk packets free

     3) Buying 5 packets of milk and seeing 2 milk packets free