Unit Testing is a technique wherein individual modules of the software are tested. This technique benefits the teams in many ways like early detection of defects, easy bug identification, fixing the code, etc. With the help of automated unit testing tools, teams can save cost, time, and effort. Unit Testing has helped the developers and testers in delivering High Quality, NextGen Software.   What is Unit Testing? Unit Testing is the first level in Software Testing Life Cycle (STLC).In this individual component of the software are tested. It is done to validate that there are no defects in the modules/components of the software and they perform as expected. Testing is done by the developers in the early stage of the Software Development Lifecycle to remove any defects in the initial phase itself. In this, each unit of the system is isolated to identify, analyze, and fix the defect. What are the Types of Unit Testing ? Three types of Unit Testing are listed below: White Box Testing – It