QA Testing (Playwright)

High-signal, cost-aware E2E testing for web applications.

Core docs:

• https://playwright.dev/docs/best-practices
• https://playwright.dev/docs/locators
• https://playwright.dev/docs/test-retries
• https://playwright.dev/docs/trace-viewer
• https://playwright.dev/docs/test-sharding
• https://playwright.dev/docs/ci

Defaults (2026)

• Keep E2E thin: protect critical user journeys only; push coverage down (unit/integration/contract).
• Locator priority: getByRole → getByLabel/getByText → getByTestId (fallback).
• Waiting: rely on Playwright auto-wait + web-first assertions; no sleeps/time-based waits.
• Isolation: tests must run alone, in parallel, and in any order; eliminate shared mutable state.
• Flake posture: retries are a debugging tool; treat rerun-pass as a failure signal and fix root cause.