HTA

Technical Assessment 05/22. OOP PHP.

Summary

• Using spatie/data-transfer-objects as a backbone (model) to create a basket containing products, and optionally discounts/offers.
• Using league/container to instantiate baskets
  • Implemented an InMemoryBasket which is essentially a collection of DTOs using ArrayAccess operations
  • Stubbed an SqliteMemoryBasket which is a more real-world integration
• Using phpunit/phpunit for unit tests
  • composer run tests or make test for running test suite
  • composer run coverage or make coverage for generating code coverage report
• Using overtrue/phplint for checking code syntax
  • composer run phplint or make phplint
• Using squizlabs/php_codesniffer to detect code style violations
  • composer run phpcs or make phpcs

Running

git clone [email protected]:alistaircol/hta.git ac-technical-test
cd ac-technical-test
# if php 8 and composer is installed locally:
composer install
composer run tests
composer run coverage
# else run in container:
make install
make test
make coverage

Running the Application

• composer install or make install
• composer run tests or make test

Tests

• composer run tests or make test

Linting

• composer run phplint or make phplint
• composer run phpcs or make phpcs

Coverage

• composer run coverage or make coverage

You can see the coverage report here

Brief

The checkout system allows users to pay upfront for products added to their property management agreement. The system should also allow users to take advantage of special offers. An initial offer will be “users who have agreed to a 12-month contract are entitled to a 10% discount off the basket total”

The products are below:

Product Code	Name	Price
P001	Photography	200
P002	Floorplan	100
P003	Gas Certificate	83.50
P004	EICR Certificate	51.00

Your job is to implement the basket which should have the following interface:

1. Basket can be initialised with offer(s) user is eligible for
2. It has an add method to add a product
3. Each individual product can only be added to the basket one time
4. It has a total method that returns the total cost of the basket - remember to take into account any valid offers