typo3-testing
Use when a reported defect must be reproduced as a failing test, when a change to a template or rendered output has to be proved, when a change must be confirmed on a running TYPO3 instance, or when setting up TYPO3 extension tests: unit/functional/E2E, PHPUnit 11-13, mutation testing, final-class mocks (v14), CI matrix across TYPO3 12/13/14.3 LTS, typo3-ci-workflows meta-package, CI failures. Also: testing-framework setup, test matrix, integration/e2e testing, coverage, test generation.