What is JUnit? You need to remember the following points when answering this question:

► It is a software testing framework to for unit testing.

► It is written in Java and designed to test Java applications.

► It is an Open Source Software maintained by the JUnit.org community.

Answer from the JUnit FAQ:

JUnit is a simple, open source framework to write and run repeatable tests. It is an instance of the xUnit architecture for unit testing frameworks. JUnit features include:

► Assertions for testing expected results

► Test fixtures for sharing common test data

► Test runners for running tests

JUnit was originally written by Erich Gamma and Kent Beck.