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Learn
Glass Box
Testing:
Software testing approaches
that examine the program structure and derive test data from the program logic.
Structural testing is sometimes referred to as clear-box testing since white
boxes are considered opaque and do not really permit visibility into the code.
Synonyms:
1)
White Box
Testing
2)
Structural
Testing
3)
Clear Box
Testing
4)
Open BoxTesting
Types of Glass Box Testing:
1)
Static and
Dynamic Analysis: static analysis techniques do not necessitate the execution of
the software, dynamic analysis is what is generally considered as ``testing``,
i.e. it involves running the system.
2)
Statement
Coverage: Testing performed where every statement is executed at least once.
3)
Branch Coverage:
Running a series of tests to ensure that all branches are tested at least once.
4)
Path Coverage:
Testing all paths.
5)
All-Definition-use-path coverage: All paths between the definition of a variable
and the use of that definition are now identified and tested.
Advantages:
1) Forces test developer to reason carefully about implementation
2) Approximates the partitioning done by execution equivalence
3) Reveals errors in "hidden" code
4) Beneficent side-effects
5) Optimizations
Disadvantages:
1) Expensive
2) Miss cases omitted in the code
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