Black Grey and White Testing

Internals Not

Internals Not Known

Known

				Black Box Testing- Internals Not Known			Grey Box Testing- Internals Partially Known			White Box Testing- Internals Fully Known
1.			The Internal Workings of an application are not required to be known			Somewhat knowledge of the internal workings are known			Tester has full knowledge of the Internal workings of the application
2.			Also known as closed box testing, data driven testing and functional testing			Another term for grey box testing is translucent testing as the tester has limited knowledge of the insides of the application			Also known as clear box testing, structural testing or code based testing
3.			Performed by end users and also by testers and developers			Performed by end users and also by testers and developers			Normally done by testers and developers
4.			-Testing is based on external expectations -Internal behavior of the application is unknown			Testing is done on the basis of high level database diagrams and data flow diagrams			Internal workings are fully known and the tester can design test data accordingly
5.			This is the least time consuming and exhaustive			Partly time consuming and exhaustive			The most exhaustive and time consuming type of testing
6.			Not suited to algorithm testing			Not suited to algorithm testing			Suited for algorithm testing
7.			This can only be done by trial and error method			Data domains and Internal boundaries can be tested, if known			Data domains and Internal boundaries can be better tested