Functional vs Non-Functional testing

Functional Testing: Testing the 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.

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 & LocalizationTesting

Non-Functional Testing: Testing the application against client's and performance requirement. Non-Functioning testing is done based on the requirements and test scenarios defined by the client.

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 (ApplicationSecurity, Network Security, System Security)