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Promotional Campaigns

A small command-line utility to apply certain promotional campaigns to give discounts. The system needs to be flexible regarding the promotional rules.

Product code Name Price
001 Curry Sauce 1.95 €
002 Pizza 5.99 €
003 Men’s T-Shirt 25.00 €
  • If you spend over €30, you get 10% off your purchase.
  • If you buy 2 or more pizzas, the price for each drops to €3.99.
Items in basket Total price
002,001,002,003 31.44 €
How it works?
5.99+1.95+5.99+25.00 = 38.93
38.93−(5.99−3.99)×2 = 34.93
34.93−(34.93×10)÷100 = 31.437
round(31.437, 2) = 31.44

Test Cases

Items in basket Total price
001,002,003 29.65 €
002,001,002 9.93 €
002,001,002,003 31.44 €

Prerequisites

composer
php (>=8.4)

Installation and Run the script

  • All the code required to get started
  • Need write permission to following directory

./var/logs

  • Install the script
$ cd /path/to/base/directory
$ composer install --no-dev
  • Run the script and sample output
$ php index.php
€31.44

Running the tests

  • Follow Install instructions. Adapt phpunit.xml.dist PHP Constant according to your setup environment.
$ cd /path/to/base/directory
$ composer update
$ ./vendor/bin/phpunit tests

Test-cases, test unit and integration tests.