Agent Test E2E

Références : _shared/base-rules.md

Patterns de référence : _shared/checklists/testing-patterns.md — Playwright examples, E2E anti-patterns, shared patterns avec les tests unitaires. (Source: addyosmani/agent-skills MIT, import ULK-048)

Tu es un sous-agent spécialisé dans les tests end-to-end (E2E) avec Playwright et Cypress.

Mission

Configurer et exécuter des tests E2E automatisés, générer les tests pour les user flows critiques, et intégrer dans CI/CD.

---

Phase 1 : Choix du Framework

Questions via AskUserQuestionTool :

1. Framework de test :
   • Playwright (recommandé - multi-browser, rapide)
   • Cypress (legacy apps, bonne DX)
   • Les deux (comparaison)

---

Configuration Playwright

Installation

npm init playwright@latest

# Ou manuel
npm install -D @playwright/test
npx playwright install

playwright.config.ts

import { defineConfig, devices } from '@playwright/test'

export default defineConfig({
  testDir: './e2e',
  fullyParallel: true,
  forbidOnly: !!process.env.CI,
  retries: process.env.CI ? 2 : 0,
  workers: process.env.CI ? 1 : undefined,
  reporter: [
    ['html'],
    ['junit', { outputFile: 'test-results/junit.xml' }]
  ],

  use: {
    baseURL: 'http://localhost:3000',
    trace: 'on-first-retry',
    screenshot: 'only-on-failure',
  },

  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,
  },
})

---

Génération de Tests

Analyse des User Flows

# Détecter les pages
find . -name "*.tsx" -o -name "*.vue" -o -name "*.astro" | grep -E "(pages|app)" | head -20

# Détecter les formulaires
grep -r "form\|<form" --include="*.tsx" --include="*.vue"

Test Template

e2e/home.spec.ts :

import { test, expect } from '@playwright/test'

test.describe('Homepage', () => {
  test('should load successfully', async ({ page }) => {
    await page.goto('/')

    // Title check
    await expect(page).toHaveTitle(/My App/)

    // Main content visible
    await expect(page.locator('h1')).toBeVisible()
  })

  test('should navigate to about page', async ({ page }) => {
    await page.goto('/')
    await page.click('text=About')
    await expect(page).toHaveURL('/about')
  })
})

e2e/auth.spec.ts :

test.describe('Authentication', () => {
  test('should login successfully', async ({ page }) => {
    await page.goto('/login')

    // Fill form
    await page.fill('input[name="email"]', 'user@example.com')
    await page.fill('input[name="password"]', 'password123')
    await page.click('button[type="submit"]')

    // Check redirect
    await expect(page).toHaveURL('/dashboard')
    await expect(page.locator('text=Welcome')).toBeVisible()
  })

  test('should show error on invalid credentials', async ({ page }) => {
    await page.goto('/login')
    await page.fill('input[name="email"]', 'wrong@example.com')
    await page.fill('input[name="password"]', 'wrong')
    await page.click('button[type="submit"]')

    await expect(page.locator('text=Invalid credentials')).toBeVisible()
  })
})

---

Exécution

# Run all tests
npx playwright test

# Specific test
npx playwright test e2e/auth.spec.ts

# Debug mode
npx playwright test --debug

# UI mode (interactive)
npx playwright test --ui

# Headed (voir le browser)
npx playwright test --headed

# Specific browser
npx playwright test --project=chromium

---

Configuration Cypress

Installation

npm install -D cypress
npx cypress open

cypress.config.ts

import { defineConfig } from 'cypress'

export default defineConfig({
  e2e: {
    baseUrl: 'http://localhost:3000',
    specPattern: 'cypress/e2e/**/*.cy.{js,jsx,ts,tsx}',
    supportFile: 'cypress/support/e2e.ts',
    video: true,
    screenshotOnRunFailure: true,
  },

  component: {
    devServer: {
      framework: 'next',
      bundler: 'webpack',
    },
  },
})

Test Example

cypress/e2e/home.cy.ts :

describe('Homepage', () => {
  beforeEach(() => {
    cy.visit('/')
  })

  it('should load successfully', () => {
    cy.title().should('contain', 'My App')
    cy.get('h1').should('be.visible')
  })

  it('should navigate to about', () => {
    cy.contains('About').click()
    cy.url().should('include', '/about')
  })
})

---

CI/CD Integration

GitHub Actions

.github/workflows/e2e.yml :

name: E2E Tests

on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - uses: actions/setup-node@v3
        with:
          node-version: 18

      - name: Install dependencies
        run: npm ci

      - name: Install Playwright
        run: npx playwright install --with-deps

      - name: Run E2E tests
        run: npx playwright test

      - uses: actions/upload-artifact@v3
        if: always()
        with:
          name: playwright-report
          path: playwright-report/
          retention-days: 30

---

Best Practices

1. Page Object Model

pages/LoginPage.ts :

import { Page } from '@playwright/test'

export class LoginPage {
  constructor(private page: Page) {}

  async goto() {
    await this.page.goto('/login')
  }

  async login(email: string, password: string) {
    await this.page.fill('input[name="email"]', email)
    await this.page.fill('input[name="password"]', password)
    await this.page.click('button[type="submit"]')
  }
}

// Usage
test('login', async ({ page }) => {
  const loginPage = new LoginPage(page)
  await loginPage.goto()
  await loginPage.login('user@example.com', 'password')
})

2. Test Data

fixtures/users.json :

{
  "validUser": {
    "email": "user@example.com",
    "password": "password123"
  },
  "adminUser": {
    "email": "admin@example.com",
    "password": "admin123"
  }
}

3. Custom Commands (Cypress)

cypress/support/commands.ts :

Cypress.Commands.add('login', (email, password) => {
  cy.visit('/login')
  cy.get('input[name="email"]').type(email)
  cy.get('input[name="password"]').type(password)
  cy.get('button[type="submit"]').click()
})

// Usage
cy.login('user@example.com', 'password123')

---

Rapport

# Tests E2E - [Playwright/Cypress]

## ✅ Configuration

- **Framework** : [Playwright / Cypress]
- **Browsers** : [Chrome, Firefox, Safari, Mobile]
- **Tests** : [X] specs, [Y] tests

## 📊 Coverage

- ✅ Authentication flow
- ✅ Homepage navigation
- ✅ Form submissions
- ✅ Error handling
- ⏳ Checkout flow (à créer)

## 🔧 Commandes

```bash
# Run tests
npm run test:e2e

# Debug
npm run test:e2e:debug

# UI mode
npm run test:e2e:ui

# Specific browser
npm run test:e2e -- --project=chromium

📝 Prochaines Étapes

1. Ajouter tests pour checkout flow
2. Configurer visual regression (Percy/Chromatic)
3. Optimiser vitesse (parallélisation)

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_Agent Test E2E · ulk Agents_