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1 Lars Frantzen, Pieter Koopman, René de Vries, Tim Willemse, Jan Tretmans Radboud University Nijmegen © Jan Tretmans Radboud University Nijmegen Testing at RadBoud
© Jan Tretmans Radboud University Nijmegen 2 Testing Research in Nijmegen Overview Introduction Integrating Data with ioco Specification Mining Jan Tretmans Lars Frantzen Tim Willemse
© Jan Tretmans Radboud University Nijmegen 3 Model Based Testing s LTS i IOTS i ioco s pass fail test tool gen : LTS (TTS) t || i i || der(s) pass i ioco s soundexhaustive pass fail spec IUT confto spec test tool test generation tool test execution tool IUT passes tests IUT confto spec soundexhaustive with Transition Systems
© Jan Tretmans Radboud University Nijmegen 4 A Tool for Transition Systems Testing: TorX On-the-fly test generation and test execution Implementation relation: ioco Mainly applicable to reactive systems / state based systems; specification languages: LOTOS, Promela, FSP, Automata TorX IUT observe output offer input next input specification check output pass fail inconclusive user: manual automatic
© Jan Tretmans Radboud University Nijmegen 5 ? money ? button1 ? button2 ! coffee ! tea test case fai l ! money ! button2 ? tea fai l ? coffee pass n: int [ n 35 ] -> [ n 50 ] -> with data model and time and hybrid c := 0 c < 10 c < 15 [ c 5 ] -> c := 0 d V t / dt = 3 d V c / dt = 2 V c := 0 [V c = 10 ] -> V t := 0 [V t = 15 ] -> ?coin1 ?coin3 ?coin2 and action refinement ? Testing Transition Systems:StatusExtensions
© Jan Tretmans Radboud University Nijmegen 6 Testing Properties of Input/Output Programs: G st Specification: property over x and y property(x,y) = x 0 |y y - x| Implementation is function i :: X Y Test set T X A tool like G ST (or QuickCheck) generates thousands of tests by systematic traversal of all values of type X But still: what is a "good" set ? IUT i(x) = x x: real pre: x 0 y: real post: |y y - x|
© Jan Tretmans Radboud University Nijmegen 7 Current and Future Research Radboud Testing transition systems with data integrating data with ioco Specification mining reverse engineering of specification from observations Approximate correctness some systems are more correct than others test selection G st specification/model testing Model Based Testing with UML use of industrial modelling techniques Integration of real-time and data testing
© Jan Tretmans Radboud University Nijmegen 8 Current and Future Research Radboud Tools for transition system testing TorX generic test environments automatic generation of test adapter and test interface TorXakis - experimenting with data/symbolic testing Applications web page testingG st smart card testingG st / TorX(akis) ASML DCB (Laser Dose Control)TorX
© Jan Tretmans Radboud University Nijmegen 9 Testing Projects Atomyste -ATOm splitting in eMbedded sYStem TEsting Uni. of TwenteRadboud Uni. Nijmegen Stress - Systematic Testing of Real-time Embedded Software Systems Uni. of TwenteRadboud Uni. Nijmegen Tangram - Model Based Testing and Diagnosis ASML, ESI, TUD, TUE, UT, RU, S&T, TNO Tarot - EU FP6 Marie Curie Artist 2 - EU FP6 Network of Excellence
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