Test Levels

These are the test level:

• Unit Testing
• Integrated Testing
• System Testing
• Acceptance Testing

Integration Testing

Is a level of  the software testing process where individual units are combined and tested as a group.

The purpose of this level of testing is to expose faults in the interaction between integrated units.

It occur after unit testing and before validation testing, the purpose of integration testing is to verify functional, performance, and reliability requirement placed on major design items.

Test drivers and test stubs are used to assist in integration Testing.

Note: The definition of a unit a debatable and it could mean any of  the following:

1. the smallest testable part of a software
2. a ‘module’ which could consist of many of ‘1’
3. a ‘component’ which could consist of many of  ‘2’

Integration testing definition, Analogy, Method, Tasks, Details, Approaches, Tips:

The purpose of integration testing is to  detect any inconsistencies between the software units that are integrated together called ‘assemblages’