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

• Pre-requisites
• Run Your First Test
• Parallel Testing With TestNG
• Local Testing With TestNG

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.

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You can also run the command below to check for outdated dependencies.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

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"

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.

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", "70.0");
        capabilities.setCapability("platform", "win10"); // If this cap isn't specified, it will just get the any available one
        capabilities.setCapability("build", "LambdaTestSampleApp");
        capabilities.setCapability("name", "LambdaTestJavaSample");

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

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

mvn test -D suite=single.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.

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="62.0"/>
  <parameter name="platform" value="WIN8"/>
    <classes>
      <class name="LambdaTest.TestNGToDo"/>
    </classes>
  </test> <!-- Test -->

  <test name="WIN10TEST">
  <parameter name="browser" value="chrome"/>
  <parameter name="version" value="79.0"/>
  <parameter name="platform" value="WIN10"/>
    <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>

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

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:

• LambdaTest Tunnel for Windows
• LambdaTest Tunnel for macOS
• 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

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

Check out our latest tutorials on TestNG automation testing 👇

• JUnit 5 vs TestNG: Choosing the Right Framework for Automation Testing
• How To Install TestNG?
• Create TestNG Project in Eclipse & Run Selenium Test Script
• A Complete Guide for Your First TestNG Automation Script
• How to Automate using TestNG in Selenium?
• How to Perform Parallel Test Execution in TestNG with Selenium
• Creating TestNG XML File & Execute Parallel Testing
• Speed Up Automated Parallel Testing in Selenium with TestNG
• Automation Testing With Selenium, Cucumber & TestNG
• How to Run JUnit Selenium Tests using TestNG
• How to Group Test Cases in TestNG [With Examples]
• How to Set Test Case Priority in TestNG with Selenium
• How to Use Assertions in TestNG with Selenium
• How to Use DataProviders in TestNG [With Examples]
• Parameterization in TestNG - DataProvider and TestNG XML [With Examples]
• TestNG Listeners in Selenium WebDriver [With Examples]
• TestNG Annotations Tutorial with Examples for Selenium Automation
• How to Use TestNG Reporter Log in Selenium
• How to Generate TestNG Reports in Jenkins

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

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