Testing Levels

Testing Levels

1. 1. Unit Testing

   • 2. Integration Testing
     • 3. System Testing
       • 4. Acceptance Testing
         • Performed in conjunction to requirements gathering stage i.e. does it meet business requirements
         • Often performed by end user to check the final system is what they expected i.e. meets their goals
       • Performance Testing
         • Performed at analysis stage
         • Check whether speed and performance are effective i.e. performance requirements
       • Functional Testing
         • Check whether functional requirements are met
       • Stress Testing
         • Tests system under unfavourable conditions
           • Inference Testing used to test system against common attacks
           • Quick Tests aims to break the system
       • Does it meet system requirements
     • Performed at design stage
     • Testing whether different units of code work together i.e. all the modules/components of the system that may have been programmed separately.
   • Testing each individual unit of code

2. Tests are usually grouped depending on where they added in the software development process