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Selenium With NUnit

Run NUnit 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 the following steps before running NUnit Selenium tests.

  1. Download and install Selenium WebDriver from the official website.
  2. Install the latest version of C#.
  3. Install the .Net framework for developing applications using C#.
  4. Download Selenium WebDriver Language Binding for C# and extract them to the appropriate folder.
  5. Install a .NET Core SDK of 2.1 or greater version.
  6. Get your TestMu AI Username and Access Key from the TestMu AI Dashboard.

Step 1: Clone the Sample Project​

Clone the repository and navigate to the project directory.

git clone https://github.com/LambdaTest/CSharp-NUnit-Selenium
cd CSharp-NUnit-Selenium

Step 2: Set Your Credentials​

Configure your credentials to connect to the TestMu AI Selenium Grid.

Set TestMu AI Username and Access Key in environment variables.

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

Step 3: Configure Your Test Capabilities​

Define browser, version, and OS settings for your test run.

In the test script, update your test capabilities. This code passes browser, browser version, and operating system information, along with TestMu AI Selenium grid capabilities via the capabilities object.

var browserOptions = new ChromeOptions();
browserOptions.PlatformName = "Windows 10";
browserOptions.BrowserVersion = "latest";

var ltOptions = new Dictionary<string, object>
{
    { "build", "NUnit Build" },
    { "name", "NUnit Test" },
    { "w3c", true }
};
browserOptions.AddAdditionalOption("LT:Options", ltOptions);
Capabilities Generator

Use the TestMu AI Capabilities Generator to auto-generate the capabilities class for your test requirements.

Step 4: Run the Test​

Execute the NUnit test from Visual Studio or the command line.

In Visual Studio (Windows):

  1. Build the solution by clicking Build > Build Solution.
  2. Open Test Explorer in Visual Studio.

cmd

  1. Click Run from the Test Explorer to run the sample test.

cmd

In Linux/macOS:

Install NuGet packages and build the project:

cd Packages
nuget.exe install ..\NUnitSelenium\packages.config
nmake clean build

Step 5: View Your Results​

Check the test output on the console and the TestMu AI dashboard.

Visit the TestMu AI Automation Dashboard to view your test results. The dashboard provides:

  • Text logs for each test step
  • Screenshots captured during execution
  • Video recordings of the full test session

Run NUnit Tests Using Agent Skills​

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

The nunit-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/nunit-skill .claude/skills/

# For Cursor / Copilot
cp -r agent-skills/nunit-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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