Frutos Escrig, David DeLlana Díaz, Luis FernandoNúñez García, Manuel2023-06-202023-06-201998Frutos Escrig, D., Llana Díaz, L. F. & Núñez García, M. «An Invitation to Friendly Testing». Journal of Computer Science and Technology, vol. 13, n.o 6, noviembre de 1998, pp. 531-45. DOI.org (Crossref), https://doi.org/10.1007/BF02946494.1000-900010.1007/BF02946494https://hdl.handle.net/20.500.14352/58388Proceedings of the International Summer School and Workshop on Formal Models of Programming and their Applications (Beijing, 1997)We present a new testing semantics, called friendly testing, whose main property is that the induced preorder between processes ⊑fr is consistent with the conformance relation, and so we have, for instance,a ⊕b ⊑fr a ⊑fr a +b. The new theory is strongly based on De Nicola & Hennessy’s work on testing. Friendly tests are defined exactly as in their work, except that internal actions are not allowed. However, in order to obtain the desired notion of friendly testing this restriction is not enough and we also have to relax the conditions to pass a test. Thus we obtain a new testing semantics and a new preorder between processes which is strictly weaker than the relation ⊑must. Moreover, we present an alternative characterization of our new testing semantics by defining a modification of acceptance sets.engjournal articlehttps//doi.org/10.1007/BF02946494http://link.springer.com/content/pdf/10.1007%2FBF02946494restricted access004Modes of computation (nondeterministicParallelInteractiveProbabilisticSemanticsInformática (Informática)1203.17 Informática