White Box Testing

ALSO CALLED: Clear Box Testing, Glass Box Testing, Structural Testing
DEFINITION: What is white box testing? White box testing traditionally refers to the use of program source code as a test basis, that is, as the basis for designing tests and test cases. (IEEE standards define a test as "a set of one or more test cases.") A looser definition says that "white box testing is based on internal structures of the software", but it is very unclear what kinds of "internal structure"  … 
Definition continues below.

WHITE BOX TESTING DEFINITION (continued): …  are covered by this. Some authorities, for example, include user-facing menus and even business processes. The term "gray box testing" is now in widespread use for internal software structures that are not actually source code - for example, class hierarchies or module call trees. In the following discussion, "white box testing" is held to be synonymous with "code-based testing." Those two terms are opposed to "requirements-based" or "specification-based" testing, also known as black box testing. The implication there is that you can't see the inner workings of a black-painted box; and in … 
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