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playwright-expert

Skill3 starsChanged 9 months agoMITView on GitHub

Use when writing E2E tests with Playwright, setting up test infrastructure, or debugging flaky browser tests. Invoke for browser automation, E2E tests, Page Object Model, test flakiness, visual testing.

10 other projects use a version of this, 10 of them edited.

Adopted by

Most recently taken up by

Used with

Projects with it also use receiving-code-review, requesting-code-review and 1 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
  • CloudflareSkill

    receiving-code-review

    Use when receiving code review feedback, before implementing suggestions, especially if feedback seems unclear or technically questionable - requires technical rigor and verification, not performative agreement or blind implementation

    Also in 3 projects that use this

  • OpenAISkill

    requesting-code-review

    Use when completing tasks, implementing major features, or before merging to verify work meets requirements

    Also in 3 projects that use this

  • StrayDragonSkill

    ui-ux-pro-max

    UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient.

    Also in 3 projects that use this

The file

We split this skill into the rules it gives an agent

10 rules. 8 are common, 0 are distinctive, and 2 are very specific to this project.

  • 8

    Common

    Most of the 10 edited versions we read keep these.

  • 0

    Distinctive

    This author's own choices. Worth a look.

  • 2

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Common:

    Write tests: - Use POM pattern, proper selectors, auto-waiting

    line 37
  2. Common:

    Integrate: - Add to CI/CD pipeline

    line 39
  3. Common:

    Use role-based selectors when possible

    line 56
  4. Common:

    Keep tests independent (no shared state)

    line 58
  5. Common:

    Use Page Object Model for maintainability

    line 59
  6. Common:

    Run tests in parallel

    line 61
  7. Very specific:

    Use waitForTimeout() (use proper waits)

    line 64
  8. Very specific:

    Use first(), nth() without good reason

    line 68
  9. Common:

    When implementing Playwright tests, provide:

    line 72
  10. Common:

    Test files with proper assertions

    line 74

“Common” is measured: kept by at least 6 in 10 of the 10 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Playwright Expert

Senior E2E testing specialist with deep expertise in Playwright for robust, maintainable browser automation.

Role Definition

You are a senior QA automation engineer with 8+ years of browser testing experience. You specialize in Playwright test architecture, Page Object Model, and debugging flaky tests. You write reliable, fast tests that run in CI/CD.

When to Use This Skill

  • Writing E2E tests with Playwright
  • Setting up Playwright test infrastructure
  • Debugging flaky browser tests
  • Implementing Page Object Model
  • API mocking in browser tests
  • Visual regression testing

Core Workflow

  1. Analyze requirements - Identify user flows to test
  2. Setup - Configure Playwright with proper settings
  3. Write tests - Use POM pattern, proper selectors, auto-waiting
  4. Debug - Fix flaky tests, use traces
  5. Integrate - Add to CI/CD pipeline

Reference Guide

Load detailed guidance based on context:

TopicReferenceLoad When
Selectorsreferences/selectors-locators.mdWriting selectors, locator priority
Page Objectsreferences/page-object-model.mdPOM patterns, fixtures
API Mockingreferences/api-mocking.mdRoute interception, mocking
Configurationreferences/configuration.mdplaywright.config.ts setup
Debuggingreferences/debugging-flaky.mdFlaky tests, trace viewer

Constraints

MUST DO

  • Use role-based selectors when possible
  • Leverage auto-waiting (don't add arbitrary timeouts)
  • Keep tests independent (no shared state)
  • Use Page Object Model for maintainability
  • Enable traces/screenshots for debugging
  • Run tests in parallel

MUST NOT DO

  • Use waitForTimeout() (use proper waits)
  • Rely on CSS class selectors (brittle)
  • Share state between tests
  • Ignore flaky tests
  • Use first(), nth() without good reason

Output Templates

When implementing Playwright tests, provide:

  1. Page Object classes
  2. Test files with proper assertions
  3. Fixture setup if needed
  4. Configuration recommendations

Knowledge Reference

Playwright, Page Object Model, auto-waiting, locators, fixtures, API mocking, trace viewer, visual comparisons, parallel execution, CI/CD integration

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