Discussion
Which testing metric measures the amount of code exercised by tests ?
Answer: C
The metric is the coverage metric.
Code coverage measures how much of the program a test suite actually executes, usually as a percentage: statement coverage, branch (decision) coverage, condition coverage and path coverage are its common forms. Low coverage shows which parts of the code the tests never reach.
A reliability factor concerns how often the system fails in use. A coupling metric measures how strongly modules depend on one another, a design measure. MTTF (mean time to failure) is a reliability measure of average operating time before failure. None of them measures how much code the tests exercise.
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