Run Selenium Tests With Mocha On LambdaTest

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Learn how to use Mocha framework to configure and run your JavaScript automation testing scripts on the LambdaTest Selenium cloud platform.

Table of Contents

• Pre-requisites
• Run Your First Test
• Executing the Test
• Running Your Parallel Tests Using Mocha Framework
• Testing Locally Hosted or Privately Hosted Projects

Pre-requisites

Before getting started with Selenium automation testing on LambdaTest, you need to:

• Download and install NodeJS. You should be having NodeJS v6 or newer. Click here to download.
• Make sure you are using the latest version of JavaScript.
• Install npm from the official website by clicking here.
• Download Selenium JavaScript bindings from the official website. Latest versions of Selenium Client and WebDriver are ideal for running your JavaScript automation testing script on LambdaTest’s Selenium Grid.

Installing Selenium Dependencies and tutorial repo

Step 1: Clone the LambdaTest’s mocha-selenium-sample repository and navigate to the code directory as shown below:

git clone https://github.com/LambdaTest/mocha-selenium-sample
cd mocha-selenium-sample

Step 2: Install the required project dependencies using the command below:

npm i
npm install selenium-webdriver

Setting up Your Authentication

Make sure you have your LambdaTest credentials with you to run test automation scripts on LambdaTest Selenium Grid. You can obtain these credentials from the LambdaTest Automation Dashboard or through LambdaTest Profile.

Set LambdaTest Username and Access Key in environment variables.

• For Linux/macOS:

export LT_USERNAME= "YOUR_LAMBDATEST_USERNAME" 
export LT_ACCESS_KEY= "YOUR_LAMBDATEST_ACCESS_KEY"

• For Windows:

$env:LT_USERNAME="YOUR_LAMBDATEST_USERNAME" 
$env:LT_ACCESS_KEY="YOUR_LAMBDATEST_ACCESS_KEY"

Run Your First Test

Sample Test with MochaJS

Test Scenario: Check out single_test.js file to view the sample test script for running your first test.

Configuration of Your Test Capabilities

In conf/single.conf.js file, you need to update your capabilities. In this code, we are passing browser, browser version, and operating system information, along with LambdaTest Selenium grid capabilities via capabilities object. The capabilities object in the above code are defined as:

exports.capabilities = {
        'build': 'Mocha-Selenium-Sample', //Build name
        'name': 'Your Test Name', // Test name
        'platform':'Windows 10', // OS name
        'browserName': 'chrome', // Browser name
        'version': 'latest', // Browser version
        'visual': false,  // To take step by step screenshot
        'network':false,  // To capture network Logs
        'console':false, // To capture console logs.
        'tunnel': false // If you want to run the localhost than change it to true
};

You can generate capabilities for your test requirements with the help of our inbuilt Capabilities Generator tool.

Executing the Test

The tests can be executed in the terminal using the following command.

npm run single

Your test results would be displayed on the test console (or command-line interface if you are using terminal/cmd) and on LambdaTest automation dashboard. LambdaTest Automation Dashboard will help you view all your text logs, screenshots and video recording for your entire automation tests.

Running Your Parallel Tests Using Mocha Framework

Setting up the Parallel Environment

Test Scenario: Check out the parallel_test.js file which would help you to run a single test on various browsers at the same time.

Executing Parallel Tests using Mocha

To run parallel tests using Mocha, we would have to execute the below command in the terminal:

npm run parallel

Your test results would be displayed on the test console (or command-line interface if you are using terminal/cmd) and on LambdaTest automation dashboard.

Testing Locally Hosted or Privately Hosted Projects

You can test your locally hosted or privately hosted projects with LambdaTest Selenium grid cloud using LambdaTest Tunnel app. All you would have to do is set up an SSH tunnel using LambdaTest Tunnel app and pass toggle tunnel = True via desired capabilities. LambdaTest Tunnel establishes a secure SSH protocol based tunnel that allows you in testing your locally hosted or privately hosted pages, even before they are made live.

Refer our LambdaTest Tunnel documentation for more information.

Here’s how you can establish LambdaTest Tunnel.

Download the binary file of:

• LambdaTest Tunnel for Windows

• LambdaTest Tunnel for Mac
• LambdaTest Tunnel for Linux

Open command prompt and navigate to the binary folder.

Run the following command:

LT -user {user’s login email} -key {user’s access key}

So if your user name is lambdatest@example.com and key is 123456, the command would be:

LT -user lambdatest@example.com -key 123456

Once you are able to connect LambdaTest Tunnel successfully, you would just have to pass on tunnel capabilities in the code shown below :

Tunnel Capability

const capabilities = {
        tunnel: true,
}

Additional Links

• Advanced Configuration for Capabilities
• How to test locally hosted apps
• How to integrate LambdaTest with CI/CD

Tutorials 📙

Check out our latest tutorials on JavaScript automation testing 👇

• How To Generate Mocha Reports With Mochawesome?
• Mocha JavaScript Tutorial With Examples For Selenium Testing

Documentation & Resources 📚

Visit the following links to learn more about LambdaTest's features, setup and tutorials around test automation, mobile app testing, responsive testing, and manual testing.

• LambdaTest Documentation
• LambdaTest Blog
• LambdaTest Learning Hub

LambdaTest Community 👥

The LambdaTest Community allows people to interact with tech enthusiasts. Connect, ask questions, and learn from tech-savvy people. Discuss best practises in web development, testing, and DevOps with professionals from across the globe 🌎

What's New At LambdaTest ❓

To stay updated with the latest features and product add-ons, visit Changelog

About LambdaTest

LambdaTest is a leading test execution and orchestration platform that is fast, reliable, scalable, and secure. It allows users to run both manual and automated testing of web and mobile apps across 3000+ different browsers, operating systems, and real device combinations. Using LambdaTest, businesses can ensure quicker developer feedback and hence achieve faster go to market. Over 500 enterprises and 1 Million + users across 130+ countries rely on LambdaTest for their testing needs.

Features

• Run Selenium, Cypress, Puppeteer, Playwright, and Appium automation tests across 3000+ real desktop and mobile environments.
• Real-time cross browser testing on 3000+ environments.
• Test on Real device cloud
• Blazing fast test automation with HyperExecute
• Accelerate testing, shorten job times and get faster feedback on code changes with Test At Scale.
• Smart Visual Regression Testing on cloud
• 120+ third-party integrations with your favorite tool for CI/CD, Project Management, Codeless Automation, and more.
• Automated Screenshot testing across multiple browsers in a single click.
• Local testing of web and mobile apps.
• Online Accessibility Testing across 3000+ desktop and mobile browsers, browser versions, and operating systems.
• Geolocation testing of web and mobile apps across 53+ countries.
• LT Browser - for responsive testing across 50+ pre-installed mobile, tablets, desktop, and laptop viewports

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