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TestNG Tutorial - GeeksforGeeks

Last Updated : 23 Jul, 2025

TestNG is an automation testing framework widely used across many projects. NG means “Next Generation” and it is influenced by JUnit and it follows the annotations (@).

TestNG (Test Next Generation) is a popular testing framework for Java applications that facilitates the efficient and organized execution of test cases. One of its key features is the ability to parameterize tests, allowing developers to run the same test method with different sets of data.

• Powerful Testing Framework: TestNG is a popular open-source framework that gives you a lot of control over how you write and run your automated tests.
• Successor to JUnit: Built upon the foundation of JUnit, TestNG offers additional features and a more user-friendly experience.
• Easy Test Control: TestNG allows you to easily define test case dependencies. You can ensure that specific tests run before others, mimicking real-world test workflows.
• Enhanced Functionality: Through annotations, grouping, test sequencing, and data-driven testing, TestNG provides more powerful and flexible ways to design your test suites.

• Before diving into TestNG, get familiar with the basics of software testing. This will help you understand the concepts of test cases, test execution, and different testing types.
• Solid Java knowledge is a must! TestNG relies on Java functionalities, so being comfortable with Java syntax and object-oriented programming is key.

TestNG is also a Java framework that facilitates to performance of software tests in Java. It is a framework that runs the tests in classes. It makes classes for corresponding tests and then processes them. TestNG is an advanced framework that overcomes limitations found in JUnit. It is also considered a flexible tool to perform tests as it uses the same Classes to run its all tests and manages threads to run procedures which makes the overall functioning of the checking tests fast.

• TestNG Installation
• Features of TestNG
• TestNG Running TestCases
• TestNG Running Failed TestCases
• XML With TestNG
• TestNG with Regex
• TestNG Groups
• TestNG Annotations in Selenium Webdriver with Examples
• @BeforeSuite
• @AfterSuite
• @BeforeTest
• @AfterTest
• @BeforeClass
• @AfterClass
• @BeforeMethod
• @AfterMethod
• @BeforeGroups
• @AfterGroups
• TestsNG Annotation attribute
• TestNG Parameters
• TestNG Listeners
• TestNG Interview Questions

TestNG is a powerful and user-friendly open-source testing framework specifically designed for Java applications. It offers a wealth of features that streamline the creation and execution of automated test cases, making it a popular choice among testers.

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