Software development involves different steps and processes, ranging from writing code and testing every function to debugging and deploying. Unit testing is an important test method used by QA teams to ensure that a software product is free of errors and meets all essential requirements. Nowadays, unit testing has become imperative in the software testing cycle to ensure that each unit of the software product is completely functional and operates as planned. Unit testing is generally considered the first step in the software development life cycle (SDLC). In unit testing, testers validate each testable part of an application to ensure that each unit of the app’s code works as intended. Unit testing is normally executed in the early development stages of an application by developers or testers.