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