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Testing
and Diagnosis
Testing of a system is an experiment in which the
system is exercised and its resulting response is analysed to ascertain whether
it behaved correctly. If incorrect behavior is detected, the second goal of
a testing experiment is a diagnose, or locate, the cause of the misbehavior.
Errors and
Faults
An instance of an incorrect operation of the system being tested is referred
to as an error. The causes of the observed errors may be design errors or physical
faults. In general, physical faults do not allow a direct mathematical treatment
of testing and diagnosis. The solution is to deal with logical faults (or fault
models), which are a convenient representation of physical faults.
Publications: