Software Testing Levels

We have multiple testing types with respect to the testing levels. They are following below list:

1. Unit Testing (component testing)
   Unit testing is known as verification of a single component 
   
   
2. Integration Testing 
   Integration testing is known as Combining the single modules into group modules.
   
   
3. System Testing 
   GUI testing (No functional requirement)
   Functional testing (functional requirement)
   Functional testing is divided into multiple types they are :
   Functional testing 
   Input domain testing
   Compatibility testing
   Configuration testing
   Security testing (database)
   Security testing is divided into 4 types:
   Authorization
   Access control
   Encryption
   decryption
   Performance testing (speed and scalability)
   Performance testing is divide into 4 types:
   Load testing
   Stress testing
   Volume testing
   Soak testing
   
   
4. User Acceptance Testing(UAT)
   UAT level - it is divided into 2 types
   𝛂 - Alpha testing
   β - Beta testing
   
   
5. Recovery testing (Abnormal stage to normal stage)
   
   
6. Parallel testing (comparative testing)
   
   
7. Intersystem testing (Co-existence)
   
   
8. Sanitation testing (Present level to next level)
   
   
9. Re-testing (confirmation of the solution)
   
   
10. Regression testing(Retesting of testing for interface problems)