What is unit testing

UNIT TESTING is a  software testing where individual
units or components of a software are tested.
The purpose is to validate that each unit of the 
software performs as designed.

Unit Testing

It is part of the white box testing.
It’s done by the developers before 
they deploy the code from Development 
environment to QA environment. 
• Since it is performed by developers, 
I have never done unit testing yet. 
But I think I can learn it and do it if it is needed

What is component testing

Testing each component of the application
separately. In application it could be
one component. One component has
stand-alone functionality.
Ex. in amazon.com Seller functionality
can be one component. Buyer can be another
component. Also, Amazon prime videos
can be another component.

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