Unit Testing in Software Testing With Example

What is Unit Testing?

Unit Testing is a type of software testing in which we test the individual unit of software application.
unit testing is a level of software testing where the development team tests each and every line of code by directly looking into the source code during the development of the application. the main of doing unit testing is to validate each unit of the software application performs as designed, here unit means the smallest testable part of the application it can be (individual function, method, module, object, or procedure ).

Unit Testing In Sofware Testing With Example

In the software development model unit testing is the first level of testing which performs before the integration testing. Unit testing is a white box testing technique that is performed by the development team, Software test engineers also do the unit testing.

"Unit Testing is defined as a type of software testing where individual components of a software are tested"

Level of Testing :

Software Testing Levels

Why do we do unit testing?
  • The main reason for doing unit testing is to find and fix the bugs in the development cycle to save the cost and isolate each unit of the system to identify, analyze and fix the defects.
  • Unit testing helps to verify the correctness of the code.
  • Unit testing helps to test every function and procedure.
  • Unit test help with code reuse.
  • Unit testing helps the developers to understand the code base and enables them to make changes quickly.
  • Unit testing helps to improve the design and allows better refactoring of code.
When to do Unit Testing?
Generally, unit testing is performed at the time of application development and it is the first level of testing performed before the integration testing.

Who Performs unit Testing?
Generally, Unit testing is performed by the development team, developer, it may also be performed by independent testers.

How to do Unit Testing?
There are two ways to do unit testing in software engineering 
  • Manual
  • Automation
Tools for unit Testing?
There are several tools available in the market for unit testing, here some of the most popular unit testing tools are listed 
  • JUnit
  • JTest
  • Nunit
  • EMMA
  • PHP Unit
Unit Testing Technique 
There are Five unit testing technique in software testing which are listed below
  • Statement Coverage
  • Decision Coverage
  • Branch Coverage
  • Condition Coverage
  • Finite State Machine Coverage
Hope !!! The above Tutorial on Unit Testing in Software Testing is helpful for you ...

QA acharya

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