Testing 

Running tests 

# Unit tests
composer ci:test:php:unit

# Fuzz tests
composer ci:test:php:fuzz

# Functional tests (requires MySQL)
composer ci:test:php:functional

# Static analysis (PHPStan level 10)
composer ci:test:php:phpstan

# Code style (PER-CS3.0)
composer ci:test:php:cgl

# Mutation testing (Infection, min-MSI 80%, covered-MSI 80%)
composer ci:mutation

# JavaScript unit tests (Vitest)
npx vitest run

# E2E tests (Playwright); installs its own TYPO3 13 in containers
Build/Scripts/runTests.sh -s e2e

# ... the same against TYPO3 14
E2E_TYPO3_VERSION=14 Build/Scripts/runTests.sh -s e2e

# ... or against a TYPO3 that is already running
TYPO3_BASE_URL=https://your-typo3.local Build/Scripts/runTests.sh -s e2e

The E2E environment 

-s e2e brings up everything the browser needs: MariaDB, a TYPO3 installed by Composer with this extension required from the checkout, PHP-FPM and Apache, plus the Playwright container that drives them. The instance lives in .Build/e2e-typo3 and is thrown away when the suite passes; a failed run keeps it, so the backend can be inspected afterwards.

The specs only ever open /typo3. The frontend exists because provisioning refuses to hand over an instance whose frontend does not answer 200 — e2e_provision_typoscript() in Build/Scripts/runTests.conf gives the root page just enough TypoScript for that.

Docker is required. Nothing is installed on the host, and DDEV is not involved.