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A formal framework for black-box conformance testing of distributed real-time systems
by Moez Krichen
International Journal of Critical Computer-Based Systems (IJCCBS), Vol. 3, No. 1/2, 2012

 

Abstract: We extend our previous work on model-based conformance testing (Bensalem et al., 2007; Krichen and Tripakis, 2009). We propose a formal framework for black-box conformance testing for distributed real-time systems. Our framework is based on the model of partially-observable, non-deterministic timed automata. A given distributed system can be modelled either as a single timed automaton or a network of timed automata. We recall the definition of the timed input-output conformance relation tioco. We consider two types of tests: analogue-clock tests and digital-clock tests. Our algorithm for generating analogue-clock tests is based on an on-the-fly determinisation of the specification automaton during the execution of the test, which in turn relies on reachability computations. We also provide algorithms for static or on-the-fly generation of digital-clock tests. These tests measure time only with finite-precision digital clocks. Our testing architecture may be either centralised or not.

Online publication date: Tue, 24-Jan-2012

 

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