Clarify docs #148

	name: Unit Tests
	on:
	workflow_dispatch:
	pull_request:
	push:
	branches:
	- master

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	tests:
	runs-on: ubuntu-22.04
	if: \|
	!contains(github.event.pull_request.body, 'skip ci')
	&& !contains(github.event.pull_request.body, 'skip unit')
	strategy:
	fail-fast: false
	matrix:
	php: [ 7.2, 7.3, 7.4, 8.0, 8.1, 8.2, 8.3 ]
	composer:
	- name: lowest
	arg: "--prefer-lowest --prefer-stable"
	- name: highest
	arg: "" # No args added as highest is default
	name: PHPUnit on PHP ${{ matrix.php }} with ${{ matrix.composer.name }} dependencies
	steps:
	- uses: actions/checkout@v2

	- name: get cache directory
	id: composer-cache
	run: \|
	echo "::set-output name=dir::$(composer config cache-files-dir)"

	- uses: actions/cache@v2
	with:
	path: \|
	~/.php_cs.cache
	${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-cache-${{ matrix.php }}-${{ matrix.composer.name }}-${{ hashFiles('**.composer.lock') }}

	- uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	extensions: curl
	tools: composer:v2
	coverage: none

	- run: composer update --prefer-dist --no-interaction --no-progress ${{ matrix.composer.arg }}

	- run: vendor/bin/parallel-lint --exclude vendor .

	- name: execute unit tests
	run: vendor/bin/phpunit --configuration phpunit.xml.dist

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