tests

Fix some issues identified by phpstan #88

	name: tests

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	run:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php-versions: [ '8.0', '8.1', '8.2' ]
	name: PHP ${{ matrix.php-versions }} Test on ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Install PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-versions }}
	extensions: pcntl, mbstring, sockets
	- name: Check PHP Version
	run: php -v
	# - name: Validate composer.json and composer.lock
	# run: composer validate --strict
	- name: Cache Composer packages
	id: composer-cache
	uses: actions/cache@v3
	with:
	path: vendor
	key: ${{ runner.os }}-php-${{ matrix.php-versions }}-${{ hashFiles('**/composer.lock') }}
	restore-keys: \|
	${{ runner.os }}-php-

	- name: Install dependencies
	run: composer install --dev --prefer-dist --no-progress
	- name: Run linter
	run: composer run-script lint
	- name: Run test suite
	run: composer run-script test

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