Differentiate black box-white box and gray box testing

Question

Differentiate black box, white box, and gray box testing?

Answer 1

a) Black box testing : - this testing approach based only on requirements and specifications. This testing needs no knowledge of structures, internal paths, or completion of the software being tested.

b) White box testing : - this testing is based on the structures of code, internal paths, and execution of the software being tested. It usually involves detailed programming ability.

c) Gray box testing : -. In this testing we look into the ‘box’ which is being tested just long enough to be aware of how it has been executed. After that we close the box and apply our knowledge to select more efficient black box tests.