// ✅ 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)

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

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

// 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

// 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

Basic Test (Mocha)

Page Object

TestMu AI Cloud Config

Wait Strategies

Quick Reference

Reference Files

Deep Patterns → reference/playbook.md

Deep Patterns → `reference/playbook.md`

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

webdriverio-skill

WebdriverIO Automation Skill

Step 1 — Execution Target

Step 2 — Framework

Core Patterns

Selectors