gfedorenko / cash_register

Cash Register CLI Application

Overview

This CLI application functions as a simple cash register. It allows you to input a list of item codes and calculates the total price based on a predefined list of products and available offers.

Features

• Loads a list of all products with prices.
• Loads a list of available offers.
• Supports three types of offers:
  1. Buy N get one free.
  2. After N items of the same type, the price lowers by a specific amount.
  3. After N items of the same type, the price lowers by a percentage.
• Calculates the final sum of the entered item codes.
• Throws exceptions for unknown item codes, unknown offer types, or duplicated items.

Usage

To run the application, use:

python3 main.py

To run the tests, use:

python3 specs.py

Example

Given the following inputs:

• Input: GR1 GR1 SR1 SR1 SR1 CF1 CF1 CF1

The application will calculate the final sum and display the result.

Error Handling

The application will throw exceptions in the following cases:

• Unknown item code: if an item code not present in the products list is entered.
• Unknown offer type: if an offer type not supported by the application is encountered.
• Duplicated items: if the same item appears more than once in the initial products list.

Code coverage

Name	Stmts	Miss	Cover
cash_register/cash_register.py	28	0	100%
cash_register/offer.py	7	0	100%
cash_register/product.py	5	0	100%
specs.py	81	0	100%
test_data.py	4	0	100%
utils/data.py	2	0	100%
utils/errors.py	9	0	100%
utils/load_data.py	12	0	100%
TOTAL	148	0	100%

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Happy Shopping!