A Complete Guide For Your First TestNG Automation Script

Writing The Code

On the eclipse window that you’re seeing now, write the following code. We are writing a code in order to verify the title of webpage.

CODE(self explanatory):

package newpack;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;

//comment the above line and uncomment below line to use Chrome
//import org.openqa.selenium.chrome.ChromeDriver;
public class NewTest {
	WebDriver driver;
    @Test
    public void FirstTest() {
        // declaration and instantiation of objects/variables
    	System.setProperty("webdriver.chrome.driver","C:\Users\Admin\Downloads\chromedriver_win32\chromedriver.exe");
		driver = new ChromeDriver();
		//comment the above 2 lines and uncomment below 2 lines to use Chrome
		//System.setProperty("webdriver.chrome.driver","G:\chromedriver.exe");
		//WebDriver driver = new ChromeDriver();
    	
        String baseUrl = "https://www.lambdatest.com/";
        String expectedTitle = "LambdaTest - Perform all your tests on cloud";
        String actualTitle = "";

        // launch Chrome and direct it to the Base URL
        driver.get(baseUrl);

        // get the actual value of the title
        actualTitle = driver.getTitle();

        /*
         * compare the actual title of the page with the expected one and print
         * the result as "Passed" or "Failed"
         */
        if (actualTitle.contentEquals(expectedTitle)){
            System.out.println("Test Passed!");
        } else {
            System.out.println("Test Failed");
        }
       
        //close Fire fox
        driver.close();
       
    }

}

After writing the code, save it and right click on ‘New Test.java’ → Run as→ TestNG Test.

Once you click on it, you’ll see a chrome browser window opening the website that you’ve entered in your code to test. And it will automatically close as soon as the test is completed and in the output section below, you’ll see ‘Test Passed’ as the status of your test on the console below.

With this, you have run your first automation test in TestNG using a local webdriver.

To verify the title of a given webpage matches the one already specified.

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Executing Cross Browser Automation Testing With TestNG & Selenium Using Remote WebDriver At TestMu AI

So far, you have noticed how to run a TestNG script using a local webdriver. That is all easy and quick, however, using a local webdriver for performing automation testing with selenium will not provide you with a variety of browsers to test your website or web app on! You can only perform your testing on the browsers that are installed in your local machine. Considering the abundance of browsers on the internet, it could be nearly impossible to have your website test over every web browser through your local machine. This is where cloud testing plays a crucial part. TestMu AI is a cloud-based cross browser testing tool which offers you to run your Selenium scripts using a remote webdriver. This remote webdriver would allow you to perform your test on over 3000+ browsers and browser versions supported by TestMu AI Selenium grid. TestMu AI also allows you to perform a test on your locally hosted web apps or web pages through an SSH tunnel. This way you don’t need to install an excessive number of browsers on your OS for higher coverage of test results.

Executing A Single Instance In TestMu AI Using TestNG

A couple changes in your code is all that you would need for running your Selenium test script on TestMu AI Selenium grid. Here we will take a look at a different example to help you demonstrate the TestMu AI Selenium grid.

We will be running a script of a simple To Do list app. In this list, our code will be marking 2 items as done, add a list item and will display the total count of pending items. You can find the below code on our GitHub repository as well.

import org.openqa.selenium.By;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import java.net.MalformedURLException;
import java.net.URL;
 
public class TestNGTodo{
     public String username = "YOUR_USERNAME";
    public String authkey = "YOUR_ACCESS_KEY";
    public static RemoteWebDriver driver = null;
    public String gridURL = "@hub.lambdatest.com/wd/hub";
    boolean status = false;
  
    @BeforeClass
    public void setUp() throws Exception {
       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");
        capabilities.setCapability("network", true); // To enable network logs
        capabilities.setCapability("visual", true); // To enable step by step screenshot
        capabilities.setCapability("video", true); // To enable video recording
        capabilities.setCapability("console", true); // To capture console logs
        try {
            driver = new RemoteWebDriver(new URL("https://" + username + ":" + authkey + gridURL), capabilities);
        } catch (MalformedURLException e) {
            System.out.println("Invalid grid URL");
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
  
    @Test
    public void testSimple() throws Exception {
       try {
              //Change it to production page
            driver.get("https://4dvanceboy.github.io/lambdatest/lambdasampleapp.html");
             
              //Let's mark done first two items in the list.
              driver.findElement(By.name("li1")).click();
            driver.findElement(By.name("li2")).click();
             
             // Let's add an item in the list.
              driver.findElement(By.id("sampletodotext")).sendKeys("Yey, Let's add it to list");
            driver.findElement(By.id("addbutton")).click();
             
              // Let's check that the item we added is added in the list.
            String enteredText = driver.findElementByXPath("/html/body/div/div/div/ul/li[6]/span").getText();
            if (enteredText.equals("Yey, Let's add it to list")) {
                status = true;
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
  
    @AfterClass
    public void tearDown() throws Exception {
       if (driver != null) {
            ((JavascriptExecutor) driver).executeScript("lambda-status=" + status);
            driver.quit();
        }
    }
}

If you look at the configurations selected for running the test. They are our desired capabilities and the code provided for those capabilities is fetched from TestMu AI Capabilities Generator.

The button which says Copy to clipboard will help you to copy all the code based on your selections in just a single click.

That’s all you need for running your first automation test script using Selenium with TestNG at TestMu AI.

Executing Cross Browser Parallel Testing With TestNG Using TestMu AI

Now let us execute a single test on multiple configurations. Yes, we are talking about parallel test execution.

In order to execute parallel testing, you must generate a testng.xml file along with a test case which would make use of the below parameters:

org.testng.annotations.Parameters

Here is an example of parallel testing with the TestNG annotations parameter.

import org.openqa.selenium.By;
import org.openqa.selenium.Platform;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import java.net.MalformedURLException;
import java.net.URL;
 
 
public class TestNGTodo {
     public String username = "YOUR_USERNAME";
    public String authkey = "YOUR_ACCESS_KEY";
    public static RemoteWebDriver driver = null;
    public String gridURL = "@hub.lambdatest.com/wd/hub";
    boolean status = false;
  
    @BeforeClass
    @org.testng.annotations.Parameters(value={"browser","version","platform"})
    public void setUp() throws Exception {
       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");
        capabilities.setCapability("network", true); // To enable network logs
        capabilities.setCapability("visual", true); // To enable step by step screenshot
        capabilities.setCapability("video", true); // To enable video recording
        capabilities.setCapability("console", true); // To capture console logs
        try {
            driver = new RemoteWebDriver(new URL("https://" + username + ":" + authkey + gridURL), capabilities);
        } catch (MalformedURLException e) {
            System.out.println("Invalid grid URL");
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
  
    @Test
    public void testSimple() throws Exception {
       try {
              //Change it to production page
            driver.get("https://4dvanceboy.github.io/lambdatest/lambdasampleapp.html");
             
              //Let's mark done first two items in the list.
              driver.findElement(By.name("li1")).click();
            driver.findElement(By.name("li2")).click();
             
             // Let's add an item in the list.
              driver.findElement(By.id("sampletodotext")).sendKeys("Yey, Let's add it to list");
            driver.findElement(By.id("addbutton")).click();
             
              // Let's check that the item we added is added in the list.
            String enteredText = driver.findElementByXPath("/html/body/div/div/div/ul/li[6]/span").getText();
            if (enteredText.equals("Yey, Let's add it to list")) {
                status = true;
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
  
    @AfterClass
    public void tearDown() throws Exception {
       if (driver != null) {
            ((JavascriptExecutor) driver).executeScript("lambda-status=" + status);
            driver.quit();
        }
    }
}

Now let us generate a tesng.xml file where we will be declaring basic test configurations such as browser, browser version, OS etc.

<?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="70.0"/>
  <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>

Kudos! That is all you need for successfully executing parallel automated tests using Selenium with TestNG on TestMu AI.

Nothing matches the feel you get after doing something new. So, feeling good after executing your first automation script? Let us know your experience in the comment section below.