單元測試

PolicyEngine testing patterns - YAML test structure, naming conventions, period handling, and quality standards

Master testing strategies and quality assurance practices.

Persistent browser automation via Playwright daemon. Keep a browser window open and send it commands (navigate, execute JS, inspect console). Perfect for interactive debugging, development, and testing web applications. Use when you need to interact with a browser repeatedly without opening/closing it.

Evaluate browser screenshots and page state for errors. Use when verifying features work correctly, detecting error conditions, or validating UI state during browser testing.

This skill should be used when seeding databases with realistic fake data for development, testing, or staging environments. Supports PostgreSQL, MySQL, SQLite, MongoDB with ORM-based seeding (SQLAlchemy, Django, Prisma) and Faker library for generating realistic test data. Use when the user needs to populate databases with sample data, create test fixtures, or set up development/staging environments with realistic data.

A/B testing patterns for lead generation sites. Client-side experiments, Google Optimize alternative, analytics integration. Use for conversion optimization.

Guides product owner through systematic acceptance testing. Use when verifying acceptance criteria, checking story completion, or conducting final review before marking a story as done.

Comprehensive feature development workflow management with branching strategies, code reviews, testing automation, and deployment coordination.

General software development practices including code review, testing strategies, and CI/CD integration. Use when implementing features, writing tests, setting up deployment pipelines, or conducting peer reviews.

Testing patterns, strategies, and best practices for comprehensive test coverage.

TDD for process documentation - test with subagents before writing, iterate until bulletproof

Build confidence with comprehensive CLI testing. Unit tests catch logic bugs with fakes, integration tests verify API contracts, E2E tests validate workflows.

A specialist skill that designs and implements a testing strategy for a codebase. This skill should be used after code development and before code review.

Comprehensive guide to React component patterns used in the Plataforma B2B de treinamento técnico corporativo educational platform. This skill covers functional components with hooks, composition patterns, state management, props flow, and error handling strategies essential for building maintainable React applications.Learn how to create reusable, testable components following React best practices while avoiding common antipatterns like prop drilling, unnecessary class components, and improper state management. The skill emphasizes composition over inheritance, unidirectional data flow, and separation of concerns.Real-world examples are taken directly from the project codebase, including CLearningSystem, BashLearningSystem, Breadcrumb, AreaCard, and FlashcardModal components. Each pattern is demonstrated with production code showing how architectural decisions were implemented in a 5,500+ line React application with 17 components.Key topics include functional components (vs class components), React Hoo

Angular 21+ expert for .ts .html .css files, @Component, UI, components, pages, services, routing, forms, templates, signals, RxJS, HttpClient, inject(), reactive forms, validators, accessibility, WCAG, AXE, browser testing, Karma, Jasmine, e2e, Playwright

Enforces Red-Green-Refactor TDD cycle. Creates failing tests first, then minimum code to pass, then refactors while keeping tests green.

Build features when user wants to implement PRDs, write code for specs, or develop functionality. Works incrementally substory-by-substory with automatic testing and code review. Automatically loads PRD context to maintain consistency. Also writes standalone tests for any file.

Create and maintain high-quality Claude Code Skills through interactive discovery, web research, and comprehensive description writing standards. Use when building new Skills, researching latest best practices, updating existing Skills, writing skill descriptions with proper trigger keywords, or generating Skill packages backed by official documentation and real-world examples.

Add Espresso and AndroidX Test dependencies to Android project

Padronizar testes de integração com Testcontainers MySQL, garantindo isolamento, reuso seguro e aderência às políticas sem H2.