Reusing Test-Cases on Different Levels of Abstraction in a Model Based Development Tool

Jan Olaf Blech
(fortiss GmbH)
Dongyue Mou
(fortiss GmbH)
Daniel Ratiu
(fortiss GmbH)

Seamless model based development aims to use models during all phases of the development process of a system. During the development process in a component-based approach, components of a system are described at qualitatively differing abstraction levels: during requirements engineering component models are rather abstract high-level and underspecified, while during implementation the component models are rather concrete and fully specified in order to enable code generation. An important issue that arises is assuring that the concrete models correspond to abstract models. In this paper, we propose a method to assure that concrete models for system components refine more abstract models for the same components. In particular we advocate a framework for reusing testcases at different abstraction levels. Our approach, even if it cannot completely prove the refinement, can be used to ensure confidence in the development process. In particular we are targeting the refinement of requirements which are represented as very abstract models. Besides a formal model of our approach, we discuss our experiences with the development of an Adaptive Cruise Control (ACC) system in a model driven development process. This uses extensions which we implemented for our model-based development tool and which are briefly presented in this paper.

In Alexander K. Petrenko and Holger Schlingloff: Proceedings 7th Workshop on Model-Based Testing (MBT 2012), Tallinn, Estonia, 25 March 2012, Electronic Proceedings in Theoretical Computer Science 80, pp. 13–27.
Published: 27th February 2012.

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