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Playwright Pro

Domain: Engineering - Core | Skill: playwright-pro | Source: engineering-team/playwright-pro/SKILL.md

Playwright Pro

Production-grade Playwright testing toolkit for AI coding agents.

Available Commands

When installed as a Claude Code plugin, these are available as /pw: commands:

Command What it does
/pw:init Set up Playwright — detects framework, generates config, CI, first test
/pw:generate <spec> Generate tests from user story, URL, or component
/pw:review Review tests for anti-patterns and coverage gaps
/pw:fix <test> Diagnose and fix failing or flaky tests
/pw:migrate Migrate from Cypress or Selenium to Playwright
/pw:coverage Analyze what's tested vs. what's missing
/pw:testrail Sync with TestRail — read cases, push results
/pw:browserstack Run on BrowserStack, pull cross-browser reports
/pw:report Generate test report in your preferred format

Quick Start Workflow

The recommended sequence for most projects:

1. /pw:init          → scaffolds config, CI pipeline, and a first smoke test
2. /pw:generate      → generates tests from your spec or URL
3. /pw:review        → validates quality and flags anti-patterns      ← always run after generate
4. /pw:fix <test>    → diagnoses and repairs any failing/flaky tests  ← run when CI turns red

Validation checkpoints: - After /pw:generate — always run /pw:review before committing; it catches locator anti-patterns and missing assertions automatically. - After /pw:fix — re-run the full suite locally (npx playwright test) to confirm the fix doesn't introduce regressions. - After /pw:migrate — run /pw:coverage to confirm parity with the old suite before decommissioning Cypress/Selenium tests.

Example: Generate → Review → Fix

# 1. Generate tests from a user story
/pw:generate "As a user I can log in with email and password"

# Generated: tests/auth/login.spec.ts
# → Playwright Pro creates the file using the auth template.

# 2. Review the generated tests
/pw:review tests/auth/login.spec.ts

# → Flags: one test used page.locator('input[type=password]') — suggests getByLabel('Password')
# → Fix applied automatically.

# 3. Run locally to confirm
npx playwright test tests/auth/login.spec.ts --headed

# 4. If a test is flaky in CI, diagnose it
/pw:fix tests/auth/login.spec.ts
# → Identifies missing web-first assertion; replaces waitForTimeout(2000) with expect(locator).toBeVisible()

Golden Rules

  1. getByRole() over CSS/XPath — resilient to markup changes
  2. Never page.waitForTimeout() — use web-first assertions
  3. expect(locator) auto-retries; expect(await locator.textContent()) does not
  4. Isolate every test — no shared state between tests
  5. baseURL in config — zero hardcoded URLs
  6. Retries: 2 in CI, 0 locally
  7. Traces: 'on-first-retry' — rich debugging without slowdown
  8. Fixtures over globals — test.extend() for shared state
  9. One behavior per test — multiple related assertions are fine
  10. Mock external services only — never mock your own app

Locator Priority

1. getByRole()        — buttons, links, headings, form elements
2. getByLabel()       — form fields with labels
3. getByText()        — non-interactive text
4. getByPlaceholder() — inputs with placeholder
5. getByTestId()      — when no semantic option exists
6. page.locator()     — CSS/XPath as last resort

What's Included

  • 9 skills with detailed step-by-step instructions
  • 3 specialized agents: test-architect, test-debugger, migration-planner
  • 55 test templates: auth, CRUD, checkout, search, forms, dashboard, settings, onboarding, notifications, API, accessibility
  • 2 MCP servers (TypeScript): TestRail and BrowserStack integrations
  • Smart hooks: auto-validate test quality, auto-detect Playwright projects
  • 6 reference docs: golden rules, locators, assertions, fixtures, pitfalls, flaky tests
  • Migration guides: Cypress and Selenium mapping tables

Integration Setup

TestRail (Optional)

export TESTRAIL_URL="https://your-instance.testrail.io"
export TESTRAIL_USER="your@email.com"
export TESTRAIL_API_KEY="your-api-key"

BrowserStack (Optional)

export BROWSERSTACK_USERNAME="your-username"
export BROWSERSTACK_ACCESS_KEY="your-access-key"

Quick Reference

See reference/ directory for: - golden-rules.md — The 10 non-negotiable rules - locators.md — Complete locator priority with cheat sheet - assertions.md — Web-first assertions reference - fixtures.md — Custom fixtures and storageState patterns - common-pitfalls.md — Top 10 mistakes and fixes - flaky-tests.md — Diagnosis commands and quick fixes

See templates/README.md for the full template index.