Tuesday, March 14, 2006

Functional Testing Vs Non-Functional Testing

S. No

Functional Testing

Non-Functional Testing


Testing developed application against business requirements.

Functional testing is done using the functional specifications provided by the client or by using the design specifications like use cases provided by the design team.

Testing the application based on the clients and performance

Non-Functioning testing is done based on the requirements and test scenarios defined by the client.


Functional testing covers

· Unit Testing
· Smoke testing / Sanity testing
· Integration Testing (Top Down,
Bottom up Testing)
· Interface & Usability Testing
· System Testing
· Regression Testing
· Pre User Acceptance Testing
(Alpha & Beta)
· User Acceptance Testing
· White Box & Black Box Testing
· Globalization & Localization

Non-Functional testing covers

· Load and Performance Testing
· Ergonomics Testing
· Stress & Volume Testing
· Compatibility & Migration Testing
· Data Conversion Testing
· Security / Penetration Testing
· Operational Readiness Testing
· Installation Testing
· Security Testing (Application
Security, Network Security,
System Security)