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Apply when writing tests, reviewing tests, deciding what to test, choosing test doubles, structuring test suites, or testing legacy code. Trigger on mentions of TDD, mocking, test coverage, test smells, integration tests, characterization tests, or getting code under test. Language-specific frameworks and idioms are in references/.
testing is an agent skill entry in ChatHome Skills, sourced from GitHub Skill Search and scored 58/100. # Testing Skill Write tests that are valuable — tests that protect against regressions, survive refactoring, run fast, and stay maintainable. A test suite that. As an agent skill, it packages a reusable instruction set that AI coding agents such as Codex and Claude Code can load to perform this task without hand-written glue code. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding testing to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
codex skill install tswr/engineering-mastery-pluginReview the upstream source before running this command.
Scan coverage: Install metadata and the indexed document body.
Automated signals from install metadata and a bounded skill body — not a full code security audit and not a recursive source or dependency review.
# Testing Skill Write tests that are valuable — tests that protect against regressions, survive refactoring, run fast, and stay maintainable. A test suite that slows down developme