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Advancements in Testing Transition Systems at Radboud University Nijmegen

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This overview presents the latest research in testing transition systems at Radboud University Nijmegen. It discusses integrating data with ioco, specification mining, and model-based testing utilizing tools like TorX. Key topics include on-the-fly test generation, execution strategies for reactive systems, and specifications in languages such as LOTOS and Promela. The research also delves into properties of input/output programs, enhancing testing processes, and reverse engineering specifications. Insights into current and future projects highlight significant advancements in testing methodologies.

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Advancements in Testing Transition Systems at Radboud University Nijmegen

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  1. Testing at RadBoud

  2. Testing Research in NijmegenOverview • Introduction • Integrating Data with ioco • Specification Mining Jan Tretmans Lars Frantzen Tim Willemse

  3. IUT confto spec i ioco s s LTS spec test tool test tool gen : LTS (TTS) test generation tool i || der(s) pass IUT passes tests IUT confto spec i ioco s   exhaustive exhaustive sound sound i IOTS IUT t || i test execution tool passfail passfail Model Based Testing with Transition Systems

  4. user: manual automatic next input offer input IUT check output TorX observe output specification pass fail inconclusive 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

  5. Extensions Status test case with data ?coin1  n: int  ? money ?coin2 ! money ? ?coin3 and action refinement [ n  35 ] -> [ n  50 ] -> ? button1 ? button2 ! button2 Vc := 0 c := 0 c := 0 Vt := 0 dVt/dt = 3 dVc/dt = 2 c < 10 c < 15  ? coffee [Vt= 15 ] -> [ c  5 ] -> [Vc= 10 ] -> ! coffee ! tea ? tea fail fail pass Testing Transition Systems: model and time and hybrid

  6. IUT i(x) = x Testing Propertiesof 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 testsby systematic traversal of all values of type X • But still: what is a "good" set ? y: real post: |yy - x|   x: real pre: x 0

  7. Current and Future ResearchRadboud • 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

  8. Current and Future ResearchRadboud • 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 testing Gst • smart card testing Gst / TorX(akis) • ASML DCB (Laser Dose Control) TorX

  9. Testing Projects • Atomyste - ATOm splitting in eMbedded sYStem TEsting Uni. of Twente Radboud Uni. Nijmegen • Stress- Systematic Testing of Real-time Embedded Software Systems Uni. of Twente Radboud 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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