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test(fixtures): give every compile fixture a unique namespace prefix #35

	name: Core CI

	on:
	pull_request:
	push:
	branches: [main]

	# Cancel superseded runs on the same branch (e.g. when a PR gets a new push)
	# so we don't pay for stale-commit mutation runs. The concurrency group is
	# keyed on the workflow name + ref, so this is per-workflow — the LSP CI
	# can run concurrently with this one without queueing.
	concurrency:
	group: ci-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	phpunit:
	name: PHPUnit
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Setup PHP 8.4
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.4'
	extensions: dom, json, mbstring, tokenizer
	coverage: none
	tools: composer:v2

	- name: Install dependencies
	uses: ramsey/composer-install@v3

	- name: Run PHPUnit
	run: make test/unit

	infection:
	name: Mutation testing
	runs-on: ubuntu-latest
	needs: phpunit
	steps:
	- uses: actions/checkout@v4

	- name: Setup PHP 8.4 (with Xdebug for coverage)
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.4'
	extensions: dom, json, mbstring, tokenizer
	coverage: xdebug
	tools: composer:v2

	- name: Install dependencies
	uses: ramsey/composer-install@v3

	- name: Run Infection
	# --min-covered-msi=95 fails CI if the mutation score drops below
	# the gate. Threads=max parallelises mutant runs.
	run: make test/mutation

	- name: Upload Infection report
	if: always()
	uses: actions/upload-artifact@v4
	with:
	name: infection-report
	path: \|
	var/infection.log
	var/infection.html
	if-no-files-found: ignore
	retention-days: 14