Add GitHub Actions workflow for PHP unit tests #2

	name: PHP Unit Tests

	on:
	push:
	branches:
	- trunk
	paths:
	- '**.php'
	- composer.json
	- composer.lock
	- phpunit.xml.dist
	- tests/**
	- .github/workflows/php-unit-tests.yml
	pull_request:
	paths:
	- '**.php'
	- composer.json
	- composer.lock
	- phpunit.xml.dist
	- tests/**
	- .github/workflows/php-unit-tests.yml

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	UnitTests:
	name: PHP unit tests - PHP ${{ matrix.php }}, WP ${{ matrix.wp-version }}
	runs-on: ubuntu-latest
	env:
	WP_CORE_DIR: '/tmp/wordpress/src'
	WP_TESTS_DIR: '/tmp/wordpress/tests/phpunit'
	strategy:
	matrix:
	php: ['7.4', '8.0', '8.2', '8.4']
	wp-version: ['latest']
	include:
	# Test with older WordPress version on PHP 7.4
	- php: '7.4'
	wp-version: '6.0'

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	extensions: mbstring, intl, mysql
	coverage: none
	tools: composer

	- name: Setup MySQL
	uses: mirromutth/mysql-action@v1.1
	with:
	mysql version: '8.0'
	mysql database: 'wordpress_test'
	mysql root password: 'root'

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

	- name: Install SVN (used for installing WP versions)
	run: sudo apt-get update && sudo apt-get install -y subversion

	- name: Install WP tests
	run: bash bin/install-wp-tests.sh wordpress_test root root 127.0.0.1 ${{ matrix.wp-version }}

	- name: Run PHP unit tests
	run: composer test-unit

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