chore: Add test workflow #3

	name: Continuous Integration

	on:
	push:
	branches: main
	pull_request:

	permissions:
	contents: read

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]

	services:
	mysql:
	image: mysql:8.0
	env:
	# The MySQL docker container requires these environment variables to be set
	# so we can create and migrate the test database.
	# See: https://hub.docker.com/_/mysql
	MYSQL_DATABASE: db_book_library_test
	MYSQL_ROOT_PASSWORD: root
	ports:
	# Opens port 3306 on service container and host
	# https://docs.github.com/en/actions/using-containerized-services/about-service-containers
	- 3306:3306
	# Before continuing, verify the mysql container is reachable from the ubuntu host
	options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=3

	steps:
	- uses: actions/checkout@v4

	- name: Validate composer.json and composer.lock
	run: composer validate --strict

	- name: Cache Composer packages
	id: composer-cache
	uses: actions/cache@v4
	with:
	path: vendor
	key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
	restore-keys: \|
	${{ runner.os }}-php-

	- name: Setup environment
	run: cp .env.example .env

	- name: Install dependencies
	run: composer install --prefer-dist --no-progress

	# Add a test script to composer.json, for instance: "test": "vendor/bin/phpunit"
	# Docs: https://getcomposer.org/doc/articles/scripts.md

	- name: Run test suite
	run: composer run-script test

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