e2e▌

Use this skill whenever you are:

Comprehensive guide to building reliable, maintainable end-to-end test suites with Playwright and Cypress. \n \n Covers both Playwright and Cypress with setup, configuration, and framework-specific patterns including Page Object Model, fixtures, network mocking, and custom commands \n Addresses core E2E testing philosophy, the testing pyramid, and best practices for deterministic, independent tests using data attributes and user-behavior assertions \n Includes advanced patterns for visual regres

ln-632-test-e2e-priority-auditor

Supported platforms:

CRITICAL: Tests must verify that product features WORK correctly, not just that UI elements render.

Run Playwright end-to-end tests for the Studio application.

End-to-end (E2E) testing validates complete user workflows from the UI through all backend systems, ensuring the entire application stack works together correctly from a user's perspective. E2E tests simulate real user interactions with browsers, handling authentication, navigation, form submissions, and validating results.

End-to-end testing patterns with Playwright for full-stack Python/React applications. \n \n Covers test structure, page object model, selector strategy (data-testid > role > label), and wait strategies for reliable cross-browser testing \n Includes auth state reuse to avoid repeated logins, test data management via API helpers, and debugging techniques for flaky tests \n Provides CI integration examples, fixture setup for authentication, and naming conventions for tests, pages, and locators \n S

Playwright E2E testing patterns with Page Object Model, configuration, CI/CD setup, and flaky test strategies. \n \n Provides Page Object Model structure for maintainable test organization, with reusable page classes that encapsulate locators and navigation logic \n Covers multi-browser testing across Chromium, Firefox, WebKit, and mobile devices with configurable retries, parallelization, and artifact capture (screenshots, videos, traces) \n Includes flaky test identification and remediation pa

Complete E2E and integration testing for TypeScript/NestJS projects with real Docker infrastructure and GWT pattern. \n \n Supports six guided workflows: setup, writing, reviewing, running, debugging, and optimizing E2E tests \n Tests against real services (PostgreSQL, MongoDB, Redis, Kafka) via Docker; never mocks infrastructure \n Enforces Given-When-Then pattern, test isolation, and specific assertions across all test cases \n Includes technology-specific helpers, rules, and examples for Kafk