Browse QA Skills

Mobile web testing skill using Playwright device emulation covering responsive testing, touch interactions, viewport management, network throttling, geolocation testing, and mobile-specific UI patterns.

Comprehensive Python unittest skill covering TestCase patterns, assertion methods, mocking with unittest.mock, subtests, fixtures, and test organization for robust Python application testing.

Testing pagination implementations including cursor-based, offset-based, keyset pagination with edge cases, performance, and consistency verification.

Security testing for OAuth2 implementations including authorization code flow, PKCE, token handling, redirect URI validation, and scope enforcement.

API mocking with Mock Service Worker for browser and Node.js environments including request interception, response simulation, and network error testing.

Expert-level Lettuce BDD testing skill for Python applications. Covers Gherkin feature files, step definitions, terrain hooks, Selenium integration, data-driven scenarios, and migration guidance to Behave for modern projects.

Testing patterns for Vercel Edge Functions, middleware, and serverless functions covering local testing, edge runtime simulation, and deployment verification.

Kotlin testing with JUnit 5, MockK, Kotest, coroutine testing, Android testing with Espresso, and Kotlin-specific assertion libraries.

Production-grade Java unit and integration testing with JUnit 5 covering assertions, parameterized tests, lifecycle hooks, Mockito mocking, nested tests, and extensions.

i18n testing covering locale switching, date/number formatting, RTL layout, plural forms, ICU messages, and translation completeness verification.

Flutter app testing with widget tests, integration tests, golden tests, Mockito, bloc testing, and Flutter Driver for end-to-end scenarios.

Flask application testing with test client, fixture patterns, SQLAlchemy model testing, blueprint testing, and Flask-specific extension testing.

FastAPI application testing with TestClient, dependency injection overrides, async testing, database testing with SQLAlchemy, and OpenAPI validation.

Testing in ephemeral preview environments for pull requests including environment provisioning, data seeding, and automated teardown.

Anthropic's official web application testing skill using native Python Playwright scripts with helper utilities for server lifecycle management, browser automation, and comprehensive E2E testing workflows.

Comprehensive WebDriverIO (WDIO) test automation skill for generating reliable end-to-end browser tests in JavaScript and TypeScript with Page Object Model, custom commands, and advanced synchronization strategies.

Testing edge computing deployments including latency verification, edge function testing, CDN worker testing, and geo-distributed test execution.

Advanced debugging patterns for test failures covering root cause analysis, flakiness investigation, performance debugging, and systematic troubleshooting methodologies.

Database performance testing including query optimization, index analysis, connection pooling, slow query detection, and N+1 query prevention.