Chapter
8
TesTing
e
sTimaTion
(B) What are the different Ways of doing Black Box
testing?
Note:  Below we have listed the most used estimation methodologies in testing. 
As this is an interview question book we limit ourselves to TPA which is the most 
preferred estimation methodology for black box testing. 
There are five methodologies most frequently used:
Top down according to budget
WBS (Work Breakdown Structure)
Guess and gut feeling
Early project data
TPA (Test Point Analysis)
(B) can you explain tpa analysis?
TPA is a technique used to estimate test efforts for black box testing. Inputs 
for TPA are the counts derived from function points (function points will be 
discussed in more detail in the next sections). 
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n
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