How to use TestNG with Selenium

  

Below are the steps and code to integrate TestNG with Selenium in Java.

What is TestNG?

TestNG (Test Next Generation) is a testing framework inspired by JUnit and NUnit. It is designed to make testing easier and more powerful with:

• Annotations (@Test, @BeforeMethod, @AfterMethod, etc.)

• Grouping test cases

• Parallel execution

• XML-based configuration

• Data-driven testing

Steps to Integrate TestNG with Selenium Java

• Install TestNG Plugin in Eclipse

  • Go to Help > Eclipse Marketplace

  • Search for TestNG, install, and restart Eclipse

• Add Selenium and TestNG Dependencies in pom.xml

  <dependencies>
      <!-- Selenium -->
      <dependency>
          <groupId>org.seleniumhq.selenium</groupId>
          <artifactId>selenium-java</artifactId>
          <version>4.21.0</version>
      </dependency>
  
      <!-- TestNG -->
      <dependency>
          <groupId>org.testng</groupId>
          <artifactId>testng</artifactId>
          <version>7.9.0</version>
          <scope>test</scope>
      </dependency>
  </dependencies>
  

1. Write TestNG Test Class with Selenium Code

Example Code

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

public class GoogleSearchTest {

    WebDriver driver;

    @BeforeClass
    public void setup() {
        // Set path to chromedriver
        System.setProperty("webdriver.chrome.driver", "path/to/chromedriver");
        driver = new ChromeDriver();
        driver.manage().window().maximize();
    }

    @Test
    public void testGoogleSearch() {
        driver.get("https://www.google.com");

        WebElement searchBox = driver.findElement(By.name("q"));
        searchBox.sendKeys("Selenium WebDriver");
        searchBox.submit();

        // Wait and verify title
        try { Thread.sleep(2000); } catch (InterruptedException e) {}
        String title = driver.getTitle();
        Assert.assertTrue(title.contains("Selenium WebDriver"), "Title does not contain expected text!");
    }

    @AfterClass
    public void tearDown() {
        if (driver != null) {
            driver.quit();
        }
    }
}

How to Run TestNG Test

• Right-click on the test file →  Run As → TestNG Test

• Or create a testng.xml:

<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd" >
<suite name="MyTestSuite">
    <test name="GoogleTest">
        <classes>
            <class name="GoogleSearchTest" />
        </classes>
    </test>
</suite>

Then right-click on testng.xml → Run As → TestNG Suite.

TestNG Annotations Summary

Annotation	Description
@Test	Marks a test method
@BeforeClass	Runs once before any method in the class
@AfterClass	Runs once after all methods in the class
@BeforeMethod	Runs before each test method
@AfterMethod	Runs after each test method