What is Non-Functional Testing?

- Once the application functionality is stable, then we do Non-Functional Testing.

- Focus on performance, load and security etc.

- Focus on customer expectation.

• Application must be safe & secure.
• Quickly responds.
• Works on all platforms.

Non-Functional Testing

1. Performance Testing
• Load Testing
• Stress Testing
• Volume Testing
2. Security Testing
3. Recovery Testing
4. Compatibility Testing
5. Configuration Testing
6. Installation Testing
7. Sanitation/Garbage Testing

1. Performance Testing

- Only for web applications. It tests speed of the application.

a. Load Testing

- Increasing the load on the application slowly then check the speed of the application.

b. Stress Testing

- Suddenly increase/decrease the load on the application and check the speed of the application.

c. Volume Testing

- Checks how much data is able to handle by the application.

2. Security Testing

- How secure our application is.

- Mostly for banking applications.

- Authentication -> users are valid or not. Ex- Login

- Authorization/Access Control -> Verifying the permissions of the valid user.

3. Recovery Testing

- Checks the system change to abnormal to normal.

Ex- Drafts in Gmail.

4. Compatibility Testing

- Forward Compatibility.

- Backward Compatibility.

- Hardware Compatibility - Configuration testing

5. Installation Testing

- Tests installation process.

- Checks screens are clear to understand or not.

- Installation process is simple or not.

- Un-Installation process is simple or not.

6. Sanitation/Garbage Testing

- Remove unwanted functionalities from the software.

- If any application provides extra features/functionality then we consider them as bug.