SmartUI SDK sample for WebdriverIO

Welcome to the world of simplified visual testing with the SmartUI SDK.

Integrating seamlessly into your existing WebdriverIO testing suite, SmartUI SDK revolutionizes the way you approach visual regression testing. Our robust solution empowers you to effortlessly capture, compare, and analyze screenshots across a multitude of browsers and resolutions, ensuring comprehensive coverage and accuracy in your visual testing endeavors.

Pre-requisites for running tests through SmartUI SDK

• Basic understanding of Command Line Interface and WebdriverIO is required.
• Login to LambdaTest SmartUI with your credentials.

The following steps will guide you in running your first Visual Regression test on LambdaTest platform using SmartUI WebdriverIO SDK integration.

Create a SmartUI Project

The first step is to create a project with the application in which we will combine all your builds run on the project. To create a SmartUI Project, follow these steps:

1. Go to Projects page
2. Click on the new project button
3. Select the platform as CLI for executing your SDK tests.
4. Add name of the project, approvers for the changes found, tags for any filter or easy navigation.
5. Click on the Submit.

Steps to run your first test

Once you have created a SmartUI Project, you can generate screenshots by running automation scripts. Follow the below steps to successfully generate screenshots

Step 1: Create/Update your test

You can clone the sample repository to run LambdaTest automation tests with SmartUI and use the cloud.e2e.js file present in the test/specs folder.

git clone https://github.com/LambdaTest/smartui-wdio-sample
cd smartui-wdio-sample

Step 2: Install the Dependencies

Install required NPM modules for LambdaTest Smart UI WebdriverIO SDK in your Frontend project.

npm i @lambdatest/smartui-cli @lambdatest/wdio-driver webdriverio wdio-lambdatest-service

If you are using Lambdatest automation grid to run webdriverio, please update the required configuration in the capability configuration (wdio.conf.js) file.

Step 3: Configure your Project Token

Setup your project token show in the SmartUI app after, creating your project.

export PROJECT_TOKEN="123456#1234abcd-****-****-****-************"

set PROJECT_TOKEN="123456#1234abcd-****-****-****-************"

$Env:PROJECT_TOKEN="123456#1234abcd-****-****-****-************"

Step 4: Create and Configure SmartUI Config

You can now configure your project configurations on using various available options to run your tests with the SmartUI integration. To generate the configuration file, please execute the following command:

npx smartui config:create .smartui.json

Once, the configuration file will be created, you will be seeing the default configuration pre-filled in the configuration file:

{
  "web": {
    "browsers": [
      "chrome",
      "firefox",
      "safari",
      "edge"
    ],
    "viewports": [
      [
        1920
      ],
      [
        1366
      ],
      [
        1028
      ]
    ] // Full Page screenshots are captured by default for web viewports
  },
  "mobile": {
    "devices": [
      "iPhone 14",  //iPhone 14 viewport
      "Galaxy S24"  //Galaxy S24 viewport
    ],
    "fullPage": true, //Full Page is true by default for mobile viewports
    "orientation": "portrait" //Change to "landscape" for landscape snapshot
  },
  "waitForTimeout": 1000, //Optional (Should only be used in case lazy-loading/async components are present)
  "waitForPageRender": 50000, //Optional (Should only be used in case of websites which take more than 30s to load)
  "enableJavaScript": false, //Enable javascript for all the screenshots of the project
  "allowedHostnames": [] //Additional hostnames to capture assets from
}

• For capturing fullpage or viewport screenshots, please refer to this documentation
• For the list of available mobile viewports, please refer to this documentation
• For more information about SmartUI config global options, please refer to this documentation.

Step 5: Adding SmartUI function to take screenshot

• You can incorporate SmartUI into your custom WebdriverIO automation test (any platform) script by adding the smartuiSnapshot function in the required segment of WebdriverIO script of which we would like to take the screenshot, as shown below:

const { expect, browser, $ } = require('@wdio/globals')
const { smartuiSnapshot } = require('@lambdatest/wdio-driver');

describe('My first visual test', () => {
    it('should use appropriate project token', async () => {
        await browser.url(`https://webdriver.io`)
        await smartuiSnapshot(browser, "SS-1");

    })
})

Step 6: Execute the Tests on SmartUI Cloud

Execute visual regression tests on SmartUI using the following commands

npx smartui --config .smartui.json exec -- wdio run ./wdio.conf.js

• You can use your custom runner command in place of wdio run ./wdio.conf.js
• You may use the npx smartui --help command in case you are facing issues during the execution of SmartUI commands in the CLI.

View SmartUI Results

You have successfully integrated SmartUI SDK with your WebdriverIO tests. Visit your SmartUI project to view builds and compare snapshots between different test runs.

You can see the Smart UI dashboard to view the results. This will help you identify the Mismatches from the existing Baseline build and do the required visual testing.

Arguments supported in the smartUISnapshot function

The following are the different options which are currently supported:

Key	Description
browser (instance)	The instance of the browser used in your tests.
"Screenshot Name" (string)	Specify a name for the screenshot in your tests to match the same screenshot with the name from your baseline.
options (object)	Specify one or a combination of selectors in the ignoreDOM or selectDOM objects. These selectors can be based on HTML DOM IDs, CSS classes, CSS selectors, or XPaths used by your webpage. They define elements that should be excluded from or included in the visual comparison.