Testing & QA · By citypaul

Review test quality using Dave Farley's eight properties of good tests.

citypaul/.dotfiles

A skill your agent uses when modifying existing code that lacks tests and you need to document its actual current behavior before making changes -- the legacy code dilemma where you need tests to…

citypaul/.dotfiles

Systematic CI/CD failure diagnosis using hypothesis-first investigation, local reproduction, and environment delta analysis.

citypaul/.dotfiles

A skill your agent uses when existing code has untestable dependencies that prevent writing tests -- direct construction of collaborators, static or global function calls, tight coupling to external…

citypaul/.dotfiles

Functional programming patterns with immutable data. An agent skill from citypaul/.dotfiles.

citypaul/.dotfiles

Set up and run mutation testing with Stryker, including full-project and focused diff runs against the current review base, then use surviving mutants to strengthen weak or missing tests.

citypaul/.dotfiles

React component testing patterns including components, hooks, context, and forms.

citypaul/.dotfiles

Refactoring assessment and behavior-preserving patterns for code with a passing baseline and proportionate preservation evidence.

citypaul/.dotfiles

Behavior-driven UI testing patterns across Vitest Browser Mode, Playwright E2E evidence boundaries, and DOM Testing Library.

citypaul/.dotfiles

Testing patterns for behavior-driven tests. An agent skill from citypaul/.dotfiles.

citypaul/.dotfiles