SmartUI

LambdaTest SmartUI provides AI-powered visual regression testing for your WebdriverIO tests. It captures screenshots, compares them against baselines, and highlights visual differences with intelligent comparison algorithms.

Setup

Create a SmartUI project

Sign in to LambdaTest and navigate to SmartUI Projects to create a new project. Select Web as the platform and configure your project name, approvers, and tags.

Set up credentials

Get your LT_USERNAME and LT_ACCESS_KEY from the LambdaTest dashboard and set them as environment variables:

export LT_USERNAME="<your username>"
export LT_ACCESS_KEY="<your access key>"

Install SmartUI SDK

npm install @lambdatest/wdio-driver

Configure WebdriverIO

Update your wdio.conf.js:

exports.config = {
  user: process.env.LT_USERNAME,
  key: process.env.LT_ACCESS_KEY,
  
  capabilities: [{
    browserName: 'chrome',
    browserVersion: 'latest',
    'LT:Options': {
      platform: 'Windows 10',
      build: 'SmartUI Build',
      name: 'SmartUI Test',
      smartUI.project: '<Your Project Name>',
      smartUI.build: '<Your Build Name>',
      smartUI.baseline: false
    }
  }]
}

Usage

Use browser.execute('smartui.takeScreenshot') to capture screenshots:

describe('WebdriverIO SmartUI Test', () => {
  it('should capture screenshot for visual testing', async () => {
    await browser.url('https://webdriver.io');
    
    await browser.execute('smartui.takeScreenshot', {
      screenshotName: 'Homepage Screenshot'
    });
    
    await browser.execute('smartui.takeScreenshot', {
      screenshotName: 'Homepage with Options',
      ignoreDOM: {
        id: ['dynamic-element-id'],
        class: ['ad-banner']
      }
    });
  });
});

Run tests

npx wdio wdio.conf.js

View results in the SmartUI Dashboard.

Advanced Options

Ignore elements

await browser.execute('smartui.takeScreenshot', {
  screenshotName: 'Ignore Dynamic Elements',
  ignoreDOM: {
    id: ['element-id'],
    class: ['dynamic-class'],
    xpath: ['//div[@class="ad"]']
  }
});

Select specific areas

await browser.execute('smartui.takeScreenshot', {
  screenshotName: 'Compare Specific Area',
  selectDOM: {
    id: ['main-content']
  }
});

Resources

Resource	Description
Official Documentation	SmartUI Documentation
SmartUI Dashboard	Access your SmartUI projects and builds
Advanced Settings	Configure comparison sensitivity
Build Options	Advanced build configuration