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Run Selenium Tests With TestNG On LambdaTest (Headless mode Example)

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Learn how to use TestNG framework to configure and run your Java automation testing scripts on the LambdaTest platform

Table Of Contents

Pre-requisites

Before you can start performing Java automation testing with Selenium, you would need to:

  • Install the latest Java development environment i.e. JDK 1.6 or higher. We recommend using the latest version.

  • Download the latest Selenium Client and its WebDriver bindings from the official website. Latest versions of Selenium Client and WebDriver are ideal for running your automation script on LambdaTest Selenium cloud grid.

  • Install Maven which supports JUnit framework out of the box. Maven can be downloaded and installed following the steps from the official website. Maven can also be installed easily on Linux/MacOS using Homebrew package manager.

Cloning Repo And Installing Dependencies

Step 1: Clone the LambdaTest’s Java-TestNG-Selenium repository and navigate to the code directory as shown below:

git clone https://github.com/LambdaTest/Java-TestNG-Selenium
cd Java-TestNG-Selenium

You can also run the command below to check for outdated dependencies.

mvn versions:display-dependency-updates

Setting Up Your Authentication

Make sure you have your LambdaTest credentials with you to run test automation scripts. You can get these credentials from the LambdaTest Automation Dashboard or by your LambdaTest Profile.

Step 2: Set LambdaTest Username and Access Key in environment variables.

  • For Linux/macOS:

    export LT_USERNAME="YOUR_USERNAME" 
export LT_ACCESS_KEY="YOUR ACCESS KEY"
    • For Windows:
    set LT_USERNAME="YOUR_USERNAME" 
set LT_ACCESS_KEY="YOUR ACCESS KEY"

Run Your First Test

Test Scenario: The sample TestNGTodo1.java tests a sample to-do list app by marking couple items as done, adding a new item to the list and finally displaying the count of pending items as output.

Configuring Your Test Capabilities

Step 3: In the test script, you need to update your test 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:

DesiredCapabilities capabilities = new DesiredCapabilities();
        capabilities.setCapability("browserName", "chrome");
        capabilities.setCapability("version", "latest");
        capabilities.setCapability("platform", "Windows 10"); // If this cap isn't specified, it will just get the any available one
        capabilities.setCapability("build", "LambdaTestSampleApp");
        capabilities.setCapability("name", "LambdaTestJavaSample");

        // Chrome flag for headless using chrome options
        ChromeOptions options = new ChromeOptions();

        options.addArguments("--no-sandbox");
        options.addArguments("--headless"); // headless flag for chrome
        options.addArguments("disable-gpu");

        caps.setCapability(ChromeOptions.CAPABILITY, options);

        /*
         * At lambdatest you can execute headless tests via `headless` capability on
         * chrome, firefox and microsoft edge browser
         */

        // lambdatest Headless mode capability
        // caps.setCapability("headless",true);

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

Executing The Test

Step 4: The tests can be executed in the terminal using the following command.

mvn test -D suite=headless.xml

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.

Run Parallel Tests Using TestNG

Here is an example xml file which would help you to run a single test on various browsers at the same time, you would also need to generate a testcase which makes use of TestNG framework parameters (org.testng.annotations.Parameters).

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite thread-count="3" name="LambaTestSuite" parallel="tests">

  <test name="WIN8TEST">
  <parameter name="browser" value="firefox"/>
  <parameter name="version" value="latest"/>
  <parameter name="platform" value="Windows 10"/>
    <classes>
      <class name="LambdaTest.TestNGToDo"/>
    </classes>
  </test> <!-- Test -->

  <test name="WIN10TEST">
  <parameter name="browser" value="chrome"/>
  <parameter name="version" value="latest"/>
  <parameter name="platform" value="Windows 10"/>
    <classes>
      <class name="LambdaTest.TestNGToDo"/>
    </classes>
  </test> <!-- Test -->
  <test name="MACTEST">
  <parameter name="browser" value="safari"/>
  <parameter name="version" value="11.0"/>
  <parameter name="platform" value="macos 10.13"/>
    <classes>
      <class name="LambdaTest.TestNGToDo"/>
    </classes>
  </test> <!-- Test -->

</suite>

Executing Parallel Tests Using TestNG

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

  • For the above example code 
    mvn test
  • For the cloned Java-TestNG-Selenium repo used to run our first sample test 
    mvn test -D suite=parallel.xml

Testing Locally Hosted Or Privately Hosted Projects

You can test your locally hosted or privately hosted projects with LambdaTest Selenium grid using LambdaTest Tunnel. All you would have to do is set up an SSH tunnel using tunnel 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 live.

Refer our LambdaTest Tunnel documentation for more information.

Here’s how you can establish LambdaTest Tunnel.

Download the binary file of:

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 [email protected] and key is 123456, the command would be:

LT -user [email protected] -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

DesiredCapabilities capabilities = new DesiredCapabilities();        
        capabilities.setCapability("tunnel", true);

Tutorials 📙

Check out our latest tutorials on TestNG automation 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 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.
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  • 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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About

A sample repo to help you run headless mode with TestNG On LambdaTest. Run Selenium tests with TestNG on LambdaTest platform.

www.lambdatest.com/java-automation-testing?utm_source=github&utm_medium=about&utm_campaign=java_testng_headless_testing

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