Answer Posted / ravikanth

there is nothing Like when to do white box testing because
according to me depending on nature of project under
development , depending on analysis at begining stage
testing methodology is selected either as white box/black
box testing.mostly white box testing is applied for the
testing process carried with internal knowledge of system
for this type of testing tester should have the knowledge
of programming on which the present system been developed.

more importantly there is not only the developer but also
testing people will do the white box testing , the one who
does the white box testing are called as white box testers

ex: Embeded Testig,protocol testing etc

i hope this will answers your question...!

regards
ravi

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