TDD Cycle — Minitest + Fixtures

Project Conventions

• Testing: Minitest + fixtures (NEVER RSpec or FactoryBot)
• Components: ViewComponents for reusable UI (partials OK for simple one-offs)
• Authorization: Pundit policies (deny by default)
• Jobs: Solid Queue, shallow jobs, _later/_now naming
• Frontend: Hotwire (Turbo + Stimulus) + Tailwind CSS
• State: State-as-records for business state (booleans only for technical flags)
• Architecture: Rich models first, service objects for multi-model orchestration
• Routing: Everything-is-CRUD (new resource over new action)
• Quality: RuboCop (omakase) + Brakeman

The Cycle