Model-based mutation testing of hybrid systems
FMCO'09 Proceedings of the 8th international conference on Formal methods for components and objects
Synchronizing asynchronous conformance testing
SEFM'11 Proceedings of the 9th international conference on Software engineering and formal methods
Conformance testing for asynchronously communicating services
ICSOC'11 Proceedings of the 9th international conference on Service-Oriented Computing
Towards model-based testing of electronic funds transfer systems
FSEN'11 Proceedings of the 4th IPM international conference on Fundamentals of Software Engineering
The complexity of asynchronous model based testing
Theoretical Computer Science
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This paper studies model-based input-output conformance testing in the presence of queues. Normally, it is assumed that a test case communicates synchronously with an implementation under test. This causes some challenges in practice, since testing is often conducted asynchronously. In an asynchronous environment messages between a tester and the implementation are queued. This may lead to incorrect verdicts. In this paper we show how one can guarantee correct verdicts in the asynchronous case for a large set of implementations. If choices between inputs and outputs are restricted to internal choices with respect to an implementation one can use the observation of quiescence as a handshake between a test case and the implementation. Such a handshake allows us to test for input-output conformance in the context of queues. In addition, the input-enabledness assumption on implementations is relaxed. Besides a formal discussion of this approach, we show the practical relevance by applying our approach to a conference protocol.