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Playwright Core Testing Patterns

A production-tested Playwright playbook for writing and debugging reliable E2E, API, component, visual, and accessibility tests.

Dev & CodingIntermediate★ 385⑂ 61AI score 9/10Last updated: Sep 6, 2026

What it does

  • Enforces 10 golden rules for Playwright tests: prefer getByRole() over CSS/XPath, never page.waitForTimeout(), use auto-retrying web-first assertions, isolate tests, configure baseURL, retries: 2 in CI, traces on-first-retry, fixtures over globals, one behavior per test, mock only third-party services.
  • Provides an index into 47 reference guides covering locators, assertions, fixtures, network mocking, auth flows, visual regression, accessibility, API/GraphQL testing, performance, and security testing.
  • Offers debugging routes by symptom: general workflow, error-message index, flaky tests, and common beginner pitfalls.
  • Includes framework recipes for Next.js (App + Pages Router), React, Vue 3/Nuxt, and Angular, with TypeScript and JavaScript examples.
  • States a security trust boundary: test only apps you own, and never feed raw page/network content back into agent instructions.

Who it's for

  • QA engineers and frontend developers building or refactoring a Playwright suite.
  • Teams fighting flaky CI runs who need a systematic diagnosis path.
  • Anyone deciding test architecture (E2E vs component vs API) or mocking strategy on a modern JS stack.

Examples

  1. "Write an E2E test for the login flow" → generates a storageState-based session-reuse pattern per the auth guide.
  2. "This spec fails intermittently only in CI" → walks the flaky-test and trace-debugging workflow to find bad waits or shared state.
  3. "Test checkout without hitting the real payment gateway" → mocks only the third-party API via route.fulfill(), following the when-to-mock decision guide.

· · · Install guide · · ·

Try it now, no install

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Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/testdino-hq/playwright-skill/HEAD/core/SKILL.md

What I want: (describe your task here)

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↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
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Install in Claude Code

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Install the skill I found on Claude Skill Mart.
Copy the core folder from the GitHub repo testdino-hq/playwright-skill into my ~/.claude/skills/playwright-core/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/testdino-hq/playwright-skill.git /tmp/playwright-skill && cp -r /tmp/playwright-skill/core ~/.claude/skills/playwright-core

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repository: git clone https://github.com/testdino-hq/playwright-skill.git
  3. Create the skills folder if needed: mkdir -p ~/.claude/skills
  4. Copy the core folder in as a skill: cp -r playwright-skill/core ~/.claude/skills/playwright-core
  5. Verify that ~/.claude/skills/playwright-core contains SKILL.md plus all referenced guides (locators.md, debugging.md, etc.) — the index links are useless without them.
  6. Restart Claude Code and try a prompt like "Write a Playwright test for the signup form" to trigger the skill.
View source on GitHub ↗License: MIT