Grey box testing is also called as grey box analysis which is a strategy of software debugging. It is based on black box testing and white box testing. It is a technique where test of a software product is done with the partial knowledge of the internal process of a system. Grey box testing is a process where errors related to web systems are identified first. Generally it is a combination of black box testing and white box testing.
In white box testing internal structure is known
In black box testing internal structure of system is unknown
In grey box testing internal structure of system is partially known
Grey box testing tests the both sides of an application, presentation layer and code part. It is performed for the below reasons
- It provides benefits of black box testing and white box testing.
- It combines the inputs of both developers and testers and provides a better quality result.
- It reduces the all over long process of functional and non functional types.
- It provides a lot of free time for a developer to correct his errors.
- Testing is conducted from user’s point of view apart from designer’s point of view.
The techniques used in grey box testing are:
It defines all the variables in the programs which are designed by developers.
To check whether the new defects are introduced in the software due to the change in the previous version of program and software environment.
Unlike black box testing the grey box testing reaches to the depth of the program code and determines the cause for the failure.
It is named as Grey box testing because the product which has to be tested by a tester is like a grey box which is translucent box where the tester sees partially in it. The tester will not require the access to the code that is why grey box testing is unbiased and non-intrusive. To test web service application grey box testing is usually used.
Check your understanding:
- How Grey box testing is different from white box and black box testing?
- What are the techniques used in grey box testing?