Functional and Non-Functional Testing

Functional Testing: Functional testing means we do functional testing to validate the functionality of the application against functional requirements document.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. we test for functionality of the application only.

Functional Testing covers:

  1. Unit Testing
  2. Smoke testing / Sanity testing
  3. Integration Testing (Top Down,Bottom up Testing)
  4. Interface & Usability Testing
  5. System Testing
  6. Regression Testing
  7. Pre User Acceptance Testing(Alpha & Beta)
  8. User Acceptance Testing
  9. White Box & Black Box Testing
  10. Globalization & Localization Testing

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 means we do not test for functionality of the application.

Non-Functional Testing covers:

  1. Load and Performance Testing
  2. Ergonomics Testing
  3. Stress & Volume Testing
  4. Compatibility & Migration Testing
  5. Data Conversion Testing
  6. Security / Penetration Testing
  7. Operational Readiness Testing
  8. Installation Testing
  9. Security Testing (Application Security, Network Security, Syatem Security)

Non Functionality Testing:
Testing your application for non functional requirements.

When to go for non functional testing?
After Functional testing.

Benefits of Non Functionality Testing:

- Have muuch confidence in your system.
- You offer more products to your customer.

Types of Non Functionality Testing:

1. Baseline Testing.
2. Compatibility
3. Compliance Testing
4. Documentation
5. Endurance
6. Load Testing
7. Stress Testing
8. Performance Testing
9. Recovery Testing
10. Security Testing
11. Usability Testing
12. Volume Testing
13. Interoperability Testing.

Thanks & Regards ,

Prashant Vadher | QA Engineer


Abu Bakar Siddique said...

Nice post Prashant..

Prashant Vadher said...

Thanx Abu..
i read ur Blogs on QualityTesting.. All are superbs..

Sachin Singh said...

Functional : To verify requirements specifications rules objectives algorithms etc.

Non-Functional (Operational): To verify that the system will work in production and will provide consistent and predictable level of service. It includes measuring resource utilization performing high volume stress tests testing system break points and testing performance bottlenecks.

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