feat: Implements collection operations and tests. #2

	name: CI

	on:
	push:
	pull_request:

	permissions:
	contents: read

	jobs:
	auto-review:
	name: Auto review
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Use PHP 8.2
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.2'

	- name: Install dependencies
	run: composer update --no-progress --optimize-autoloader

	- name: Run phpcs
	run: composer phpcs

	- name: Run phpmd
	run: composer phpmd

	tests:
	name: Tests
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Use PHP 8.2
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.2'

	- name: Install dependencies
	run: composer update --no-progress --optimize-autoloader

	- name: Run unit tests
	env:
	XDEBUG_MODE: coverage
	run: composer test

	- name: Run mutation tests
	run: composer test-mutation

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