Testing a program by examining which lines of executable code are visited (as in code coverage testing) and also the ways of getting to each line of code and the subsequent sequence of execution.

Path coverage testing is the most comprehensive type of testing that a test suite can provide. It can find more bugs in a program, especially those that are caused by data coupling. However, path coverage is a testing level that is very hard to achieve, and usually only small and/or critical sections of code are checked in this way.

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