Before moving on to the techniques to use TestNG framework, let’s understand what it is.
TestNG is a framework for automation testing for the Java language. The "NG" in TestNG stands for "Next Generation." It is designed to cover a wide range of testing croups like unit, functional, integration, end-to-end, and more, along with strong and easy-to-use functionalities. TestNG would be quite familiar to the people who have used JUnit, with some additional enhanced features. When the whole buzz about the framework took place, JUnit took all the attention across the Java platforms. JUnit is an extremely easy-to-use framework, but has some limitations as well. The limitations of JUnit opened the gates for TestNG. TestNG is created by a renowned programmer Cedric Beust with a view to overcoming the limitation of JUnit and combining the advantages of JUnit and NUnit. TestNG is distributed under the Apache Software license and is an open-source framework.