| name | typo3-testing |
| description | Use when setting up TYPO3 extension test infrastructure, writing unit/functional/E2E tests, configuring PHPUnit 11/12/13, mutation testing, mocking final classes (v14), CI/CD matrix across TYPO3 12/13/14.3 LTS, dev-dependency consolidation via typo3-ci-workflows meta-package, or debugging CI failures. Also triggers on: testing-framework setup, ensure proper testing, test matrix, integration testing, e2e testing, coverage, test generation. |
TYPO3 Testing Skill
Assessment-First Rule
When enhancing an existing test suite (not from scratch), run FIRST:
automated-assessment typo3-testing
Install other skills (e.g. typo3-conformance, enterprise-readiness) for broader coverage.
Generates a gap report from 73+ checkpoints (PHPUnit, PHPStan, runTests.sh, CaptainHook, architecture, mutation, CI matrix, coverage).
Use the report as the task list. Resolve mechanical failures before manual test writing.
Applies
- "enhance/improve/strengthen tests", "increase coverage/mutation"
- "enterprise grade", "A+ testing", "fix all findings"
Does NOT Apply
- From scratch, writing a specific test, debugging a failure
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
Netresearch default: Build/captainhook.json (declared in composer.json extra.captainhook.config). Verify: ls Build/captainhook.json .git/hooks/pre-commit 2>/dev/null (see references/captainhook-setup.md).
Commands
scripts/setup-testing.sh [--with-e2e]
scripts/validate-setup.sh
scripts/generate-test.sh <Type> <Class>
Build/Scripts/runTests.sh -s unit|functional|phpstan|cgl|mutation|ci
Verify tests fail before fix, pass after. Bug fixes use the strict TDD loop in references/tdd-discipline.md — no "tested/verified" claims without pasted output.
Scoring Requirements
Unit tests required (70%+ coverage). Functional tests required for DB operations. phpat required for architecture points. PHPStan level 10.
References (in references/, .md implied)
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 | tdd-discipline.md | ci-workflows-meta-package.md | synthetic-secret-fixtures.md | release-workflow-validation.md | asset-templates-guide.md | backend-module-render-verification.md
Content Triggers
- CI failures across TYPO3 versions →
ci-debugging.md
- Functional tests with TSFE context →
functional-testing.md
- Mock failures across dependency versions →
mock-validity.md
- Image/extension tests,
Environment::initialize, NormalizedParams TypeError, backupGlobals → test-environment-guards.md
- Event dispatcher testing with try/catch →
event-dispatch-testing.md
- Meta-package, typo3-ci-workflows, no-plugins →
ci-workflows-meta-package.md
- Fake secrets, push-protection, cs-fixer concat →
synthetic-secret-fixtures.md
- Burned tag, validate before tagging →
release-workflow-validation.md
- Backend module 500 / wrong ViewHelper namespace / runaway canvas →
backend-module-render-verification.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
