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A method to validate the correctness of test logic programs applied in a protocol conformance test systems using Petri nets.

Suzuki, H.; Tsuji, K.; Araki, T.; Takahashi, O.; Yoshitake, S.

In: IEICE Trans. on Fundamentals of Electronics, Communications, and Computer Science, Vol. E77-A, No. 10, pages 1663-1671. 1994.

Abstract: As to the method of multi-layer testing, up to now, the testing system (called PROVES) which testes effectively each N-layer protocol implement of SUT (System Under Test) using the functions of derail-points located between N-layer and (N + 1)-layer protocol implements in a test system has been proposed. The test logic programs, which are embedded in the derail-points of the test system, play an important role to realize the protocol error test sequences in the test system. Namely, they modify, add, or delete the correct protocol commands/responses output from the protocol implement part of the test system, sends these erroneous commands/responses to SUT and observes the output from SUT. This paper proposes the method of validating the correctness of test logic program using the structural properties of Petri nets without coding the test logic programs, where correctness means that the desired output can be obtained by sending or receiving the commands/responses within a constant time under the initial conditions determined uniquely by the test system and SUT. According to our experiment, it is seen that almost all of the logical errors included in the test logic programs used for the experiment can be detected by this method.

Keywords: Petri nets, communication protocols, conformance tests, reachability analysis.

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