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Selenium With NemoJS

Run NemoJS tests on the TestMu AI cloud grid. This guide covers setup, running a sample test, configuring capabilities, and testing locally hosted pages.

Sample repo

All the code used in this guide is available in the sample repository.

Prerequisites​

Complete these steps before running NemoJS Selenium tests on TestMu AI.

  1. Create a TestMu AI account and get your username and access key from the dashboard.
  2. Install NodeJS from nodejs.org.
  3. Install npm: npm init
  4. Install NemoJS: npm install --save-dev nemo

Step 1: Clone the Sample Project​

Clone the TestMu AI NemoJS sample repository to your local machine.

git clone https://github.com/LambdaTest/Nemo-Lambdatest-sample
cd Nemo-Lambdatest-sample

Install the required dependencies:

npm install

Step 2: Set Your Credentials​

Set your TestMu AI username and access key as environment variables.

export LT_USERNAME="undefined"
export LT_ACCESS_KEY="undefined"

Set the environment variables in the nemo.config.js file with your TestMu AI Username and Access Key.

Step 3: Configure Your Test Capabilities​

Update the capabilities in nemo.config.js to define the browser and platform settings.

"withCapabilities": [{
    "build": "LT Nemo Sample Tests",
    "name": "LT Nemo sample test",
    "platformName" : "Windows 10",
    "browserName" : "Chrome",
    "browserVersion" : "latest",
    "user": "env:LT_USERNAME",
    "accessKey": "env:LT_ACCESS_KEY"
}]
tip

Generate capabilities for your test requirements with the Capabilities Generator.

Step 4: Run the Test​

Execute the test using the following command.

Single test:

npx nemo -P chrome

Parallel tests:

npx nemo -P chrome,chrome_2,firefox

Step 5: View Your Results​

After running the test, view your results on the TestMu AI Automation Dashboard.

The dashboard provides:

  • Video recordings of each test session
  • Screenshots captured at each step
  • Console logs from the browser
  • Network logs for debugging
  • Detailed command logs

Run NemoJS Tests Using Agent Skills​

Use AI coding assistants to generate and run NemoJS tests with the TestMu AI Agent Skill.

The nemojs-skill is part of TestMu AI Agent Skills - structured packages that teach AI coding assistants how to write production-grade test automation.

Install the skill:

git clone https://github.com/LambdaTest/agent-skills.git
cp -r agent-skills/nemojs-skill .claude/skills/

# For Cursor / Copilot
cp -r agent-skills/nemojs-skill .cursor/skills/
tip

Install all available framework skills at once by cloning the repository directly into your tool's skills directory (e.g., .claude/skills/, .cursor/skills/).

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