White box testing
|
|
White box testing, clear box, glass box or structural testing is used in computer programming, software engineering and software testing to check that the outputs of a program, given certain inputs, conform to the internal design and implementation of the program.
The term white box indicates that the tester closely examines the internal implementation of the program being tested. A complementary technique, black box testing or functional testing, checks that the program performs to its specification without examining its internal implementation.
White box testing derives test cases that can guarantee that every statement in the program is tested at least once (see coverage testing), that all logical decisions are tested for their true and false cases, that execute all loops within their operational bounds and that test the input to every function to ensure that each function actually recieves the data sent to it.