e2e-testing
starsforks
How to install e2e-testing?
affaan-m/ecc/e2e-testing
$npx -y skills add affaan-m/ECC --skill e2e-testingPlaywright E2E testing patterns, Page Object Model, configuration, CI/CD integration, artifact management, and flaky test strategies.
SKILL.md
| 1 | # E2E Testing Patterns |
| 2 | |
| 3 | Comprehensive Playwright patterns for building stable, fast, and maintainable E2E test suites. |
| 4 | |
| 5 | ## Test File Organization |
| 6 | |
| 7 | ``` |
| 8 | tests/ |
| 9 | ├── e2e/ |
| 10 | │ ├── auth/ |
| 11 | │ │ ├── login.spec.ts |
| 12 | │ │ ├── logout.spec.ts |
| 13 | │ │ └── register.spec.ts |
| 14 | │ ├── features/ |
| 15 | │ │ ├── browse.spec.ts |
| 16 | │ │ ├── search.spec.ts |
| 17 | │ │ └── create.spec.ts |
| 18 | │ └── api/ |
| 19 | │ └── endpoints.spec.ts |
| 20 | ├── fixtures/ |
| 21 | │ ├── auth.ts |
| 22 | │ └── data.ts |
| 23 | └── playwright.config.ts |
| 24 | ``` |
| 25 | |
| 26 | ## Page Object Model (POM) |
| 27 | |
| 28 | ```typescript |
| 29 | import { Page, Locator } from '@playwright/test' |
| 30 | |
| 31 | export class ItemsPage { |
| 32 | readonly page: Page |
| 33 | readonly searchInput: Locator |
| 34 | readonly itemCards: Locator |
| 35 | readonly createButton: Locator |
| 36 | |
| 37 | constructor(page: Page) { |
| 38 | this.page = page |
| 39 | this.searchInput = page.locator('[data-testid="search-input"]') |
| 40 | this.itemCards = page.locator('[data-testid="item-card"]') |
| 41 | this.createButton = page.locator('[data-testid="create-btn"]') |
| 42 | } |
| 43 | |
| 44 | async goto() { |
| 45 | await this.page.goto('/items') |
| 46 | await this.page.waitForLoadState('networkidle') |
| 47 | } |
| 48 | |
| 49 | async search(query: string) { |
| 50 | await this.searchInput.fill(query) |
| 51 | await this.page.waitForResponse(resp => resp.url().includes('/api/search')) |
| 52 | await this.page.waitForLoadState('networkidle') |
| 53 | } |
| 54 | |
| 55 | async getItemCount() { |
| 56 | return await this.itemCards.count() |
| 57 | } |
| 58 | } |
| 59 | ``` |
| 60 | |
| 61 | ## Test Structure |
| 62 | |
| 63 | ```typescript |
| 64 | import { test, expect } from '@playwright/test' |
| 65 | import { ItemsPage } from '../../pages/ItemsPage' |
| 66 | |
| 67 | test.describe('Item Search', () => { |
| 68 | let itemsPage: ItemsPage |
| 69 | |
| 70 | test.beforeEach(async ({ page }) => { |
| 71 | itemsPage = new ItemsPage(page) |
| 72 | await itemsPage.goto() |
| 73 | }) |
| 74 | |
| 75 | test('should search by keyword', async ({ page }) => { |
| 76 | await itemsPage.search('test') |
| 77 | |
| 78 | const count = await itemsPage.getItemCount() |
| 79 | expect(count).toBeGreaterThan(0) |
| 80 | |
| 81 | await expect(itemsPage.itemCards.first()).toContainText(/test/i) |
| 82 | await page.screenshot({ path: 'artifacts/search-results.png' }) |
| 83 | }) |
| 84 | |
| 85 | test('should handle no results', async ({ page }) => { |
| 86 | await itemsPage.search('xyznonexistent123') |
| 87 | |
| 88 | await expect(page.locator('[data-testid="no-results"]')).toBeVisible() |
| 89 | expect(await itemsPage.getItemCount()).toBe(0) |
| 90 | }) |
| 91 | }) |
| 92 | ``` |
| 93 | |
| 94 | ## Playwright Configuration |
| 95 | |
| 96 | ```typescript |
| 97 | import { defineConfig, devices } from '@playwright/test' |
| 98 | |
| 99 | export default defineConfig({ |
| 100 | testDir: './tests/e2e', |
| 101 | fullyParallel: true, |
| 102 | forbidOnly: !!process.env.CI, |
| 103 | retries: process.env.CI ? 2 : 0, |
| 104 | workers: process.env.CI ? 1 : undefined, |
| 105 | reporter: [ |
| 106 | ['html', { outputFolder: 'playwright-report' }], |
| 107 | ['junit', { outputFile: 'playwright-results.xml' }], |
| 108 | ['json', { outputFile: 'playwright-results.json' }] |
| 109 | ], |
| 110 | use: { |
| 111 | baseURL: process.env.BASE_URL || 'http://localhost:3000', |
| 112 | trace: 'on-first-retry', |
| 113 | screenshot: 'only-on-failure', |
| 114 | video: 'retain-on-failure', |
| 115 | actionTimeout: 10000, |
| 116 | navigationTimeout: 30000, |
| 117 | }, |
| 118 | projects: [ |
| 119 | { name: 'chromium', use: { ...devices['Desktop Chrome'] } }, |
| 120 | { name: 'firefox', use: { ...devices['Desktop Firefox'] } }, |
| 121 | { name: 'webkit', use: { ...devices['Desktop Safari'] } }, |
| 122 | { name: 'mobile-chrome', use: { ...devices['Pixel 5'] } }, |
| 123 | ], |
| 124 | webServer: { |
| 125 | command: 'npm run dev', |
| 126 | url: 'http://localhost:3000', |
| 127 | reuseExistingServer: !process.env.CI, |
| 128 | timeout: 120000, |
| 129 | }, |
| 130 | }) |
| 131 | ``` |
| 132 | |
| 133 | ## Flaky Test Patterns |
| 134 | |
| 135 | ### Quarantine |
| 136 | |
| 137 | ```typescript |
| 138 | test('flaky: complex search', async ({ page }) => { |
| 139 | test.fixme(true, 'Flaky - Issue #123') |
| 140 | // test code... |
| 141 | }) |
| 142 | |
| 143 | test('conditional skip', async ({ page }) => { |
| 144 | test.skip(process.env.CI, 'Flaky in CI - Issue #123') |
| 145 | // test code... |
| 146 | }) |
| 147 | ``` |
| 148 | |
| 149 | ### Identify Flakiness |
| 150 | |
| 151 | ```bash |
| 152 | npx playwright test tests/search.spec.ts --repeat-each=10 |
| 153 | npx playwright test tests/search.spec.ts --retries=3 |
| 154 | ``` |
| 155 | |
| 156 | ### Common Causes & Fixes |
| 157 | |
| 158 | **Race conditions:** |
| 159 | ```typescript |
| 160 | // Bad: assumes element is ready |
| 161 | await page.click('[data-testid="button"]') |
| 162 | |
| 163 | // Good: auto-wait locator |
| 164 | await page.locator('[data-testid="button"]').click() |
| 165 | ``` |
| 166 | |
| 167 | **Network timing:** |
| 168 | ```typescript |
| 169 | // Bad: arbitrary timeout |
| 170 | await page.waitForTimeout(5000) |
| 171 | |
| 172 | // Good: wait for specific condition |
| 173 | await page.waitForResponse(resp => resp.url().includes('/api/data')) |
| 174 | ``` |
| 175 | |
| 176 | **Animation timing:** |
| 177 | ```typescript |
| 178 | // Bad: click during animation |
| 179 | await page.click('[data-testid="menu-item"]') |
| 180 | |
| 181 | // Good: wait for stability |
| 182 | await page.locator('[data-testid="menu-item"]').waitFor({ state: 'visible' }) |
| 183 | await page.waitForLoadState('networkidle') |
| 184 | await page.locator('[data-testid="menu-item"]').click() |
| 185 | ``` |
| 186 | |
| 187 | ## Artifact Management |
| 188 | |
| 189 | ### Screenshots |
| 190 | |
| 191 | ```typescript |
| 192 | await page.screenshot({ path: 'artifacts/after-login.png' }) |
| 193 | await page.screenshot({ path: 'artifacts/full-page.png', fullPage: true }) |
| 194 | await page.locator('[data-testid="chart"]').screenshot({ path: 'artifac |
People who liked this also viewed
6 picksType
- tddSkills for Real Engineers. Straight from my .agents directory.SkillsJul 2026
- test-driven-developmentUse when implementing any feature or bugfix, before writing implementation codeSkillsJul 2026
- qaSkills for Real Engineers. Straight from my .agents directory.SkillsJul 2026
- verification-before-completionUse when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidenceSkillsJul 2026
- webapp-testingToolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser lSkillsJul 2026
- playwright-best-practicesUse when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, teSkillsJul 2026
