Levels of Testing

Levels of Testing

1. Unit Testing.
   • Unit Testing is primarily carried out by the developers themselves.
   • Deals functional correctness and the completeness of individual program units.
   • White box testing methods are employed
   
   
   
2. Integration Testing.
   • Integration Testing: Deals with testing when several program units are integrated.
     
   • Regression testing : Change of behavior due to modification or addition is called ‘Regression’. Used to bring changes from worst to least.
   • Incremental Integration Testing : Checks out for bugs which encounter when a module has been integrated to the existing.
   • Smoke Testing : It is the battery of test which checks the basic functionality of program. If fails then the program is not sent for further testing.
     
   
   
   
3. System Testing.
   • System Testing - Deals with testing the whole program system for its intended purpose.
   • Recovery testing : System is forced to fail and is checked out how well the system recovers the failure.
   • Security Testing : Checks the capability of system to defend itself from hostile attack on programs and data.
   • Load & Stress Testing : The system is tested for max load and extreme stress points are figured out.
   • Performance Testing : Used to determine the processing speed.
   • Installation Testing : Installation & uninstallation is checked out in the target platform.
   
   
   
4. Acceptance Testing.
   • UAT ensures that the project satisfies the customer requirements.
   • Alpha Testing : It is the test done by the client at the developer’s site.
   • Beta Testing : This is the test done by the end-users at the client’s site.
   • Long Term Testing : Checks out for faults occurrence in a long term usage of the product.
   • Compatibility Testing : Determines how well the product is substantial to product transition.