Getting Started with TestNG in Automation

 TestNG (Test Next Generation) is a powerful testing framework inspired by JUnit and NUnit but with expanded features that make test automation more efficient. It is widely used in Selenium automation projects because of its flexibility, powerful annotations, and ability to manage test execution flow. In this blog, we’ll walk you through the basics of TestNG and how to get started.

1. What is TestNG?

TestNG is an open-source testing framework designed for Java. It provides advanced features like:

Annotations for easy test management

Grouping and prioritizing test cases

Parallel test execution

HTML and XML reports

Integration with Selenium and other tools

These features make TestNG ideal for automation frameworks in real-world projects.

2. Installing TestNG

To use TestNG, follow these steps:

If you’re using Eclipse:

Open Eclipse.

Go to Help > Eclipse Marketplace.

Search for TestNG and install the plugin.

Restart Eclipse.

For Maven Projects:

Add the following dependency in your pom.xml:

xml

Copy

Edit

<dependency>

  <groupId>org.testng</groupId>

  <artifactId>testng</artifactId>

  <version>7.8.0</version>

  <scope>test</scope>

</dependency>

3. Writing Your First TestNG Script

Here’s a simple TestNG test class:

java

Copy

Edit

import org.testng.annotations.Test;

public class SampleTest {

    @Test

    public void testLogin() {

        System.out.println("Login test executed");

    }

    @Test

    public void testSearch() {

        System.out.println("Search test executed");

    }

}

Explanation:

@Test tells TestNG to treat the method as a test case.

Methods run in alphabetical order by default unless priority is defined.

4. Running Your TestNG Test

You can run TestNG tests in multiple ways:

Right-click the class in Eclipse > Run As > TestNG Test.

Use TestNG XML file to define and organize your tests.

Here’s a sample testng.xml file:

xml

Copy

Edit

<suite name="AutomationSuite">

  <test name="TestCases">

    <classes>

      <class name="SampleTest"/>

    </classes>

  </test>

</suite>

Run the XML file to execute the tests.

5. Advantages of TestNG

Easy to manage large test suites

Built-in reporting

Ability to skip, prioritize, and group test methods

Supports data-driven testing with @DataProvider

Integrates well with Jenkins, Maven, and Selenium

Final Thoughts

TestNG is a must-have for anyone building automation frameworks in Java. With its clean structure, flexible configuration, and advanced features, TestNG helps you write better organized, maintainable, and scalable test suites. Start small, and gradually explore its features to supercharge your automation testing process.


Learn Fullstack Software Testing Tools Training in Hyderabad

Read More:

Using Postman for API Testing

Visit our IHub Talent Training Institute

Get Direction

Comments

Post a Comment

Popular posts from this blog

SoapUI for API Testing: A Beginner’s Guide

 APIs are the backbone of modern applications, enabling communication between different software systems. Testing these APIs is crucial to ensure reliable performance and functionality. SoapUI is one of the most widely used tools for API testing, especially for SOAP and REST services. This beginner’s guide will walk you through what SoapUI is, why it's useful, and how to get started. What is SoapUI? SoapUI is an open-source tool designed for testing web services. It supports both SOAP (Simple Object Access Protocol) and REST (Representational State Transfer) APIs. SoapUI offers a user-friendly interface that makes it easier to send requests, inspect responses, automate tests, and validate data. Why Use SoapUI for API Testing? Easy to use GUI with drag-and-drop features Supports both manual and automated testing Allows functional, security, and performance testing Supports data-driven testing using external sources Enables testers to mock web services for testing in isolated environ...
Read more

Automated Regression Testing with Selenium

 Regression testing ensures that new code changes do not negatively impact the existing functionality of an application. As applications grow and evolve, manually performing regression tests becomes time-consuming and error-prone. Selenium, a leading open-source test automation tool for web applications, is an excellent choice for automating regression testing. What is Regression Testing? Regression testing involves re-running previously completed test cases after code changes to verify that existing features continue to work as expected. It is critical for maintaining application stability during frequent updates, especially in agile and DevOps environments. Why Use Selenium for Regression Testing? Selenium supports multiple browsers (Chrome, Firefox, Edge), programming languages (Java, Python, C#, etc.), and platforms. Its flexibility and integration capabilities make it ideal for building and executing automated regression test suites. Key Benefits: Open-source and community-sup...
Read more

Containerizing Java Apps with Docker and Kubernetes

 Modern application development demands speed, scalability, and consistency across environments. Containerization addresses these needs by packaging applications and their dependencies into lightweight containers. For Java applications, using tools like Docker and Kubernetes simplifies deployment, scaling, and management. In this blog, we'll explore how to containerize a Java app with Docker and manage it using Kubernetes. Why Containerize Java Applications? Java apps often depend on specific versions of libraries, Java Runtime Environment (JRE), and configurations. Containers: Ensure consistency across dev, test, and production environments Simplify dependency management Improve portability and scalability Enable microservices architecture Step 1: Create a Java Application Let’s assume you have a simple Spring Boot application with a jar file ready for deployment: ./mvnw clean package This generates a .jar file in the target/ directory. Step 2: Write a Dockerfile Create a file nam...
Read more