Unit Testing

Unit testing is a method by which individual units of source code are tested. A unit is the smallest testable part of an application. In procedural programming, a unit may be an individual function or procedure. If you’re writing front-end code in React, it may be an individual component.

The implementation of unit testing can vary from being very manual (pencil and paper) to being formalized as a part of build automation.

Unit testing benefits

Facilitates change

Since test cases for all functions and methods are written, whenever a change in the overall system causes a fault, the unit that is causing it can quickly be identified and fixed.

Hence, unit testing allows the programmer to refactor code at a later date and make sure the module works correctly after other components are added.

Simplifies integration

Unit ...