Input-output Conformance Testing for Channel-based Service Connectors

Natallia Kokash
(Centrum Wiskunde en Informatica)
Farhad Arbab
(Centrum Wiskunde en Informatica)
Behnaz Changizi
(Centrum Wiskunde en Informatica)
Leonid Makhnist
(Brest State Technical University)

Service-based systems are software systems composed of autonomous components or services provided by different vendors, deployed on remote machines and accessible through the web. One of the challenges of modern software engineering is to ensure that such a system behaves as intended by its designer. The Reo coordination language is an extensible notation for formal modeling and execution of service compositions. Services that have no prior knowledge about each other communicate through advanced channel connectors which guarantee that each participant, service or client, receives the right data at the right time. Each channel is a binary relation that imposes synchronization and data constraints on input and output messages. Furthermore, channels are composed together to realize arbitrarily complex behavioral protocols. During this process, a designer may introduce errors into the connector model or the code for their execution, and thus affect the behavior of a composed service. In this paper, we present an approach for model-based testing of coordination protocols designed in Reo. Our approach is based on the input-output conformance (ioco) testing theory and exploits the mapping of automata-based semantic models for Reo to equivalent process algebra specifications.

In Luca Aceto and Mohammad Reza Mousavi: Proceedings First International Workshop on Process Algebra and Coordination (PACO 2011), Reykjavik, Iceland, 9th June 2011, Electronic Proceedings in Theoretical Computer Science 60, pp. 19–35.
Published: 6th August 2011.

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