testmu-ai/webdriverio-skill

---
name: webdriverio-skill
description: >
  Generates WebdriverIO (WDIO) automation tests in JavaScript or TypeScript.
  Supports local and TestMu AI cloud. Use when user mentions "WebdriverIO",
  "WDIO", "wdio.conf", "browser.url", "$", "$$". Triggers on: "WebdriverIO",
  "WDIO", "wdio", "browser.$".
languages:
  - JavaScript
  - TypeScript
category: e2e-testing
license: MIT
metadata:
  author: TestMu AI
  version: "1.0"
---

# WebdriverIO Automation Skill

## Step 1 — Execution Target

Default local. If mentions "cloud", "TestMu", "LambdaTest" → cloud via WDIO LambdaTest service.

## Step 2 — Framework

| Signal | Runner |
|--------|--------|
| Default | Mocha |
| "Jasmine" | Jasmine |
| "Cucumber", "BDD" | Cucumber |

## Core Patterns

### Selectors

```javascript
// ✅ Preferred
await $('[data-testid="submit"]').click();
await $('aria/Submit').click();
await $('button=Submit').click(); // text-based

// Chaining
await $('form').$('input[name="email"]').setValue('test@test.com');

// Multiple elements
const items = await $$('.list-item');
```

### Basic Test (Mocha)

```javascript
describe('Login', () => {
    it('should login successfully', async () => {
        await browser.url('/login');
        await $('[data-testid="email"]').setValue('user@test.com');
        await $('[data-testid="password"]').setValue('password123');
        await $('[data-testid="submit"]').click();
        await expect(browser).toHaveUrl(expect.stringContaining('/dashboard'));
    });
});
```

### Page Object

```javascript
class LoginPage {
    get inputEmail() { return $('[data-testid="email"]'); }
    get inputPassword() { return $('[data-testid="password"]'); }
    get btnSubmit() { return $('[data-testid="submit"]'); }

    async login(email, password) {
        await this.inputEmail.setValue(email);
        await this.inputPassword.setValue(password);
        await this.btnSubmit.click();
    }
}
module.exports = new LoginPage();
```

### TestMu AI Cloud Config

```javascript
// wdio.conf.js
exports.config = {
    user: process.env.LT_USERNAME,
    key: process.env.LT_ACCESS_KEY,
    hostname: 'hub.lambdatest.com',
    port: 80,
    path: '/wd/hub',
    services: ['lambdatest'],
    capabilities: [{
        browserName: 'Chrome',
        browserVersion: 'latest',
        'LT:Options': {
            platform: 'Windows 11',
            build: 'WDIO Build',
            name: 'WDIO Test',
            video: true,
            network: true,
        }
    }],
};
```

### Wait Strategies

```javascript
// Wait for element
await $('[data-testid="result"]').waitForDisplayed({ timeout: 10000 });

// Wait for condition
await browser.waitUntil(
    async () => (await $('[data-testid="count"]').getText()) === '5',
    { timeout: 10000, timeoutMsg: 'Count did not reach 5' }
);
```

## Quick Reference

| Task | Command |
|------|---------|
| Setup | `npm init wdio@latest` |
| Run all | `npx wdio run wdio.conf.js` |
| Run specific | `npx wdio run wdio.conf.js --spec ./test/login.js` |
| Run suite | `npx wdio run wdio.conf.js --suite smoke` |
| Parallel | Set `maxInstances: 5` in config |
| Screenshot | `await browser.saveScreenshot('./screenshot.png')` |

## Reference Files

| File | When to Read |
|------|-------------|
| `reference/cloud-integration.md` | LambdaTest service, parallel, capabilities |
| `reference/advanced-patterns.md` | Custom commands, reporters, services |

## Deep Patterns → `reference/playbook.md`

| § | Section | Lines |
|---|---------|-------|
| 1 | Production Configuration | Multi-env, multi-browser configs |
| 2 | Page Object Model | BasePage, LoginPage, DashboardPage |
| 3 | Custom Commands | Browser + element commands, TypeScript |
| 4 | Network Mocking | DevTools mock, abort, error simulation |
| 5 | File Operations | Upload, download, drag & drop |
| 6 | Multi-Tab, iFrame & Shadow DOM | Window handles, nested shadow |
| 7 | Visual Regression | Image comparison service |
| 8 | API Testing | Fetch-based, API+UI combined |
| 9 | Mobile Testing | Appium service integration |
| 10 | LambdaTest Integration | Cloud grid config |
| 11 | CI/CD Integration | GitHub Actions, Docker Compose |
| 12 | Debugging Quick-Reference | 11 common problems |
| 13 | Best Practices Checklist | 14 items |