Fault coverage of protocol test methods

The authors present an estimation of fault coverage of four protocol test sequences generation techniques (T-, U-, D-, and W-methods) using Monte Carlo simulation on a simple protocol machine. The ability of a test sequence to decide whether a protocol implementation conforms to its specification heavily relies upon the range of faults that it can capture. This study shows that a test sequence produced by T-method has a poor fault detection capability whereas test sequences produced by U-, D- and W-methods have fault coverage comparable to each other and superior to that for T-method on several classes of randomly generated machines used.<>