what is the need of black box testing after completing white box tesing?

what is the need of black box testing after completing white
box tesing?

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what is the need of black box testing after completing white box tesing?..

Answer / vinay

White box testing is done to check the right coding and
internal coded loops and modules working properly or not but
Black box testing is must after white box because in black
box we give the input and check the expected output and also
check system compatibility which is the main requirement of
the software.

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what is the need of black box testing after completing white box tesing?..

Answer / dwarika dhish mishra

Blackbox means opaque object, It means we never go in to internal structure of the product. Black box testing is done to test the functionality of product without going to internal structure.
Through Black box testing we find out the bugs related to UI, Usability, Functionality. but by using black box testing we can't find out bugs related to Memory leak, Logical error.

To read more about Black box testing and White box testing visit
http://abodeqa.wordpress.com/2012/05/24/what-is-black-box-and-white-box-testing/

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