Claude Agent Skill · by Affaan M

E2e Testing

Install E2e Testing skill for Claude Code from affaan-m/everything-claude-code.

Install
Terminal · npx
$npx skills add https://github.com/obra/superpowers --skill test-driven-development
Works with Paperclip

How E2e Testing fits into a Paperclip company.

E2e Testing drops into any Paperclip agent that handles this kind of work. Assign it to a specialist inside a pre-configured PaperclipOrg company and the skill becomes available on every heartbeat — no prompt engineering, no tool wiring.

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SaaS FactoryPaired

Pre-configured AI company — 18 agents, 18 skills, one-time purchase.

$27$59
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Source file
SKILL.md326 lines
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---name: e2e-testingdescription: Playwright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies.origin: ECC--- # E2E Testing Patterns Comprehensive Playwright patterns for building stable, fast, and maintainable E2E test suites. ## Test File Organization ```tests/├── e2e/│   ├── auth/│   │   ├── login.spec.ts│   │   ├── logout.spec.ts│   │   └── register.spec.ts│   ├── features/│   │   ├── browse.spec.ts│   │   ├── search.spec.ts│   │   └── create.spec.ts│   └── api/│       └── endpoints.spec.ts├── fixtures/│   ├── auth.ts│   └── data.ts└── playwright.config.ts``` ## Page Object Model (POM) ```typescriptimport { Page, Locator } from '@playwright/test' export class ItemsPage {  readonly page: Page  readonly searchInput: Locator  readonly itemCards: Locator  readonly createButton: Locator   constructor(page: Page) {    this.page = page    this.searchInput = page.locator('[data-testid="search-input"]')    this.itemCards = page.locator('[data-testid="item-card"]')    this.createButton = page.locator('[data-testid="create-btn"]')  }   async goto() {    await this.page.goto('/items')    await this.page.waitForLoadState('networkidle')  }   async search(query: string) {    await this.searchInput.fill(query)    await this.page.waitForResponse(resp => resp.url().includes('/api/search'))    await this.page.waitForLoadState('networkidle')  }   async getItemCount() {    return await this.itemCards.count()  }}``` ## Test Structure ```typescriptimport { test, expect } from '@playwright/test'import { ItemsPage } from '../../pages/ItemsPage' test.describe('Item Search', () => {  let itemsPage: ItemsPage   test.beforeEach(async ({ page }) => {    itemsPage = new ItemsPage(page)    await itemsPage.goto()  })   test('should search by keyword', async ({ page }) => {    await itemsPage.search('test')     const count = await itemsPage.getItemCount()    expect(count).toBeGreaterThan(0)     await expect(itemsPage.itemCards.first()).toContainText(/test/i)    await page.screenshot({ path: 'artifacts/search-results.png' })  })   test('should handle no results', async ({ page }) => {    await itemsPage.search('xyznonexistent123')     await expect(page.locator('[data-testid="no-results"]')).toBeVisible()    expect(await itemsPage.getItemCount()).toBe(0)  })})``` ## Playwright Configuration ```typescriptimport { defineConfig, devices } from '@playwright/test' export default defineConfig({  testDir: './tests/e2e',  fullyParallel: true,  forbidOnly: !!process.env.CI,  retries: process.env.CI ? 2 : 0,  workers: process.env.CI ? 1 : undefined,  reporter: [    ['html', { outputFolder: 'playwright-report' }],    ['junit', { outputFile: 'playwright-results.xml' }],    ['json', { outputFile: 'playwright-results.json' }]  ],  use: {    baseURL: process.env.BASE_URL || 'http://localhost:3000',    trace: 'on-first-retry',    screenshot: 'only-on-failure',    video: 'retain-on-failure',    actionTimeout: 10000,    navigationTimeout: 30000,  },  projects: [    { name: 'chromium', use: { ...devices['Desktop Chrome'] } },    { name: 'firefox', use: { ...devices['Desktop Firefox'] } },    { name: 'webkit', use: { ...devices['Desktop Safari'] } },    { name: 'mobile-chrome', use: { ...devices['Pixel 5'] } },  ],  webServer: {    command: 'npm run dev',    url: 'http://localhost:3000',    reuseExistingServer: !process.env.CI,    timeout: 120000,  },})``` ## Flaky Test Patterns ### Quarantine ```typescripttest('flaky: complex search', async ({ page }) => {  test.fixme(true, 'Flaky - Issue #123')  // test code...}) test('conditional skip', async ({ page }) => {  test.skip(process.env.CI, 'Flaky in CI - Issue #123')  // test code...})``` ### Identify Flakiness ```bashnpx playwright test tests/search.spec.ts --repeat-each=10npx playwright test tests/search.spec.ts --retries=3``` ### Common Causes & Fixes **Race conditions:**```typescript// Bad: assumes element is readyawait page.click('[data-testid="button"]') // Good: auto-wait locatorawait page.locator('[data-testid="button"]').click()``` **Network timing:**```typescript// Bad: arbitrary timeoutawait page.waitForTimeout(5000) // Good: wait for specific conditionawait page.waitForResponse(resp => resp.url().includes('/api/data'))``` **Animation timing:**```typescript// Bad: click during animationawait page.click('[data-testid="menu-item"]') // Good: wait for stabilityawait page.locator('[data-testid="menu-item"]').waitFor({ state: 'visible' })await page.waitForLoadState('networkidle')await page.locator('[data-testid="menu-item"]').click()``` ## Artifact Management ### Screenshots ```typescriptawait page.screenshot({ path: 'artifacts/after-login.png' })await page.screenshot({ path: 'artifacts/full-page.png', fullPage: true })await page.locator('[data-testid="chart"]').screenshot({ path: 'artifacts/chart.png' })``` ### Traces ```typescriptawait browser.startTracing(page, {  path: 'artifacts/trace.json',  screenshots: true,  snapshots: true,})// ... test actions ...await browser.stopTracing()``` ### Video ```typescript// In playwright.config.tsuse: {  video: 'retain-on-failure',  videosPath: 'artifacts/videos/'}``` ## CI/CD Integration ```yaml# .github/workflows/e2e.ymlname: E2E Testson: [push, pull_request] jobs:  test:    runs-on: ubuntu-latest    steps:      - uses: actions/checkout@v4      - uses: actions/setup-node@v4        with:          node-version: 20      - run: npm ci      - run: npx playwright install --with-deps      - run: npx playwright test        env:          BASE_URL: ${{ vars.STAGING_URL }}      - uses: actions/upload-artifact@v4        if: always()        with:          name: playwright-report          path: playwright-report/          retention-days: 30``` ## Test Report Template ```markdown# E2E Test Report **Date:** YYYY-MM-DD HH:MM**Duration:** Xm Ys**Status:** PASSING / FAILING ## Summary- Total: X | Passed: Y (Z%) | Failed: A | Flaky: B | Skipped: C ## Failed Tests ### test-name**File:** `tests/e2e/feature.spec.ts:45`**Error:** Expected element to be visible**Screenshot:** artifacts/failed.png**Recommended Fix:** [description] ## Artifacts- HTML Report: playwright-report/index.html- Screenshots: artifacts/*.png- Videos: artifacts/videos/*.webm- Traces: artifacts/*.zip``` ## Wallet / Web3 Testing ```typescripttest('wallet connection', async ({ page, context }) => {  // Mock wallet provider  await context.addInitScript(() => {    window.ethereum = {      isMetaMask: true,      request: async ({ method }) => {        if (method === 'eth_requestAccounts')          return ['0x1234567890123456789012345678901234567890']        if (method === 'eth_chainId') return '0x1'      }    }  })   await page.goto('/')  await page.locator('[data-testid="connect-wallet"]').click()  await expect(page.locator('[data-testid="wallet-address"]')).toContainText('0x1234')})``` ## Financial / Critical Flow Testing ```typescripttest('trade execution', async ({ page }) => {  // Skip on production — real money  test.skip(process.env.NODE_ENV === 'production', 'Skip on production')   await page.goto('/markets/test-market')  await page.locator('[data-testid="position-yes"]').click()  await page.locator('[data-testid="trade-amount"]').fill('1.0')   // Verify preview  const preview = page.locator('[data-testid="trade-preview"]')  await expect(preview).toContainText('1.0')   // Confirm and wait for blockchain  await page.locator('[data-testid="confirm-trade"]').click()  await page.waitForResponse(    resp => resp.url().includes('/api/trade') && resp.status() === 200,    { timeout: 30000 }  )   await expect(page.locator('[data-testid="trade-success"]')).toBeVisible()})```