TYPO3 Testing Skill
Assessment-First Rule
When enhancing an existing test suite (not setting up from scratch), run the automated-assessment skill FIRST:
automated-assessment typo3-testingInstall additional skills (e.g.typo3-conformance,enterprise-readiness) for broader assessment coverage.
This generates a gap report from 73+ checkpoints covering PHPUnit config, PHPStan level, runTests.sh, CaptainHook hooks, architecture tests, mutation thresholds, CI matrix, and coverage per class.
Use the assessment report as the task list. Resolve mechanical checkpoint failures before manual test writing.
When This Rule Applies
- "enhance/improve/strengthen tests", "increase coverage/mutation score"
- "enterprise grade", "A+ testing", "fix all findings"
When This Rule Does NOT Apply
- Setting up from scratch, writing a specific test, debugging a failing test
References for TYPO3 extension testing.
Test Type Selection
| Type | Use When | Speed |
|---|---|---|
| Unit | Pure logic, no DB, validators, utilities | Fast |
| Functional | DB interactions, repositories, controllers | Medium |
| Architecture | Layer constraints, dependency rules (phpat) | Fast |
| E2E (Playwright) | User workflows, browser, accessibility | Slow |
| Integration | HTTP client, API mocking, OAuth flows | Medium |
| Mutation | Test quality verification, 70%+ coverage | CI/Release |
runTests.sh - Mandatory
Build/Scripts/runTests.sh is mandatory. Must be executable, support -s (suite) and -p (PHP version).
Git Hooks
Verify: ls captainhook.json.git/hooks/pre-commit 2>/dev/null (see references/captainhook-setup.md)
Commands
# Setup (from skill dir)
scripts/setup-testing.sh [--with-e2e]
scripts/validate-setup.sh
scripts/generate-test.sh <Type> <Class>
# Run (always via runTests.sh)
Build/Scripts/runTests.sh -s unit|functional|phpstan|cgl|mutation|ciVerify tests fail before fix, pass after.
Scoring Requirements
| Criterion | Requirement |
|---|---|
| Unit tests | Required, 70%+ coverage |
| Functional tests | Required for DB operations |
| Architecture tests | phpat required for full points |
| PHPStan | Level 10 (max) |
References (in references/)
unit-testing.md | functional-testing.md | functional-test-patterns.md | integration-testing.md | e2e-testing.md | accessibility-testing.md | ddev-testing.md | test-runners.md | architecture-testing.md | ci-debugging.md | ci-cd.md | quality-tools.md | mutation-testing.md | fuzz-testing.md | performance-testing.md | typo3-v14-final-classes.md | mock-validity.md | javascript-testing.md | captainhook-setup.md | enforcement-rules.md | event-dispatch-testing.md | crypto-testing.md | test-environment-guards.md | sonarcloud.md | typo3-ci-config-patterns.md
Content Triggers
- CI test failures across TYPO3 versions: load
ci-debugging.md - Functional tests with TSFE context: load
functional-testing.md - Mock failures across dependency versions: load
mock-validity.md - Image processing or extension-dependent tests: load
test-environment-guards.md - Event dispatcher testing with try/catch: load
event-dispatch-testing.md
Links
TYPO3 Testing Docs | Tea Extension | phpat | Infection
Credits & Attribution
This skill is based on the excellent work by Netresearch DTT GmbH.
Original repository: https://github.com/netresearch/typo3-testing-skill
Copyright (c) Netresearch DTT GmbH — Methodology and best practices (MIT / CC-BY-SA-4.0)
Special thanks to Netresearch DTT GmbH for their generous open-source contributions to the TYPO3 community, which helped shape this skill collection. Adapted by webconsulting.at for this skill collection