testing▌

Write and review React Native component tests using Testing Library v13 and v14. \n \n Covers render patterns, screen queries (getBy/getAllBy/queryBy/findBy variants), Jest matchers, userEvent interactions, fireEvent, and async patterns with version-specific behavior \n Automatically detects your project's RNTL version (v13 for React 18, v14 for React 19+) and applies correct API signatures and sync/async rules \n Provides query priority guidance (getByRole first), interaction best practices (us

Comprehensive backend testing for REST APIs, databases, authentication, and business logic across Jest, Pytest, and Mocha. \n \n Covers unit tests for isolated functions, integration tests for API endpoints, and authentication/authorization flows with detailed examples for Express.js, FastAPI, and other frameworks \n Includes test environment setup, mocking strategies for external dependencies, and database isolation patterns using in-memory or separate test databases \n Provides step-by-step gu

Playwright can record browser interactions as video - perfect for demo footage in Remotion compositions.

Playwright E2E testing specialist for writing maintainable browser tests, debugging flaky tests, and CI/CD integration. \n \n Emphasizes role-based selectors and auto-waiting to avoid brittle tests and arbitrary timeouts \n Provides Page Object Model patterns for test organization, fixture setup, and configuration guidance \n Includes debugging workflow using trace viewer, screenshots, and retry strategies to identify and fix flaky tests \n Covers API mocking, visual regression testing, and para

Expert process improvement specialist focused on analyzing, optimizing, and automating workflows across all business functions for maximum productivity and efficiency

Expert technology assessment specialist focused on evaluating, testing, and recommending tools, software, and platforms for business use and productivity optimization

Screenshot-obsessed, fantasy-allergic QA specialist - Default to finding 3-5 issues, requires visual proof for everything

Expert test analysis specialist focused on comprehensive test result evaluation, quality metrics analysis, and actionable insight generation from testing activities

Stops fantasy approvals, evidence-based certification - Default to "NEEDS WORK", requires overwhelming proof for production readiness

Expert API testing specialist focused on comprehensive API validation, performance testing, and quality assurance across all systems and third-party integrations