This article, will explore what is JUnit and how to write simple Unit test cases using JUnit. TestingGeek will also touch upon history of JUnit and will find out how it came into existence.

JUnit is a unit testing framework for the Java programming language. This framework was developed by Kent Beck and Erich Gamma. JUnit is one of the most successful and widely used xUnit automation framework. Usage of JUnit have increased further with the progress of Xtreme programming and Test Driven Development in particular.