Difference between Functional and Non Functional Testing Prepare Interview

Difference between Functional and Non Functional Testing

Before us proceeding towards the Difference between Functional and Non
Functional Testing
it is very important for us to first take a brief look
at Functional and Non Functional Testing.


Functional and Non Functional Testing is what?

Functional testing is
performed using the functional specifications provided by the client or you can
say by using the design specifications like use cases provided by the design
team.


In
this, tester has to test the application to see that all requirements of the
client which he has said in SRS and BRS have been incorporated or not.
Non Functional Testing
is that which is always concerned with the client expectations like
performance, load and stress issues and so on.

Distinction between Functional and Non Functional
Testing

                 
Functional Testing
              
Non- Functional Testing
1. In functional Testing tester tests how well the
system performs.
1. In Non-Functional Testing tester tests how well
the system responds.
2. Functional Testing is based on client
requirements.
2. Non- Functional Testing is based on client
expectations.
3. Functional Testing means Testing the application
against business requirements.
3. Non- Functional Testing means Testing the
application against clients and performance requirements.
4. It is a part of System Testing.
4. It is also a part of System Testing
5. Functional Testing Validating the behavior of
application.
5. Non- Functional Testing Validating the performance
of application.
6. This Testing covers Unit Testing, Integration
Testing, Smoke Testing, Sanity Testing, Regression Testing and so on.
6. This Testing covers Load/Performance Testing,
Stress/Volume Testing, Security Testing, Installation Testing and so on.
7. It is always concentrating on customer
requirements.
7. It is always concentrating on customer
expectations.
8. Functional Testing means how is your system is
doing.
8. Non- Functional Testing means how well your system
is doing example usability, performance and stress testing.

Also read : Starlink should be fully mobile by the end of 2021
Also read : Interview Questions

Difference between Functional and Non Functional Testing
#Difference #Functional #Functional #Testing

Leave a Comment