Black box testing

Black box testing

Black box testing treats the software as black box. The functionality examined without any knowledge of internal implementation. The software tester is only aware of what the software is supposed to do, not how it does it.

There are following methods of Black box testing:            

                                 

• Equivalencepartitioning
•  Boundaryvalue analysis
•   Allpairs testing
•  Statetransition tables
•   Decisiontable testing
•  Fuzzytesting
•  Modelbased testing
•  Usecase testing
•  Exploratorytesting
•  Specification based testing 

One advantage of black box technique is that no programming knowledge is required. Black box testing has been said to be “like a walk in a dark labyrinth without a flashlight”.

Black box testing method can be applied at all level of software testing at the unit, integration and system level and acceptance of software testing process.