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System architectures of embedded systems are undergoing major changes. Embedded systems are becoming cyberphysical systems (CPS) with open interfaces and resulting distributed control loops. This calls for new testing approaches that enable early evaluation of system and safety concepts, and support the evaluation of system designs before they are implemented. Simulation is a common technology that supports the testing of embedded systems, but existing simulators are focused and specialized. A single simulator often does not support all models needed to provide a valid testing environment for system designs. In this paper, we describe our framework for the coupling of communication simulators to enable virtual testing and safeguarding of embedded system designs. The integration of network simulation models and fault injectors enables testing of safety concepts. The applicability of our approach is illustrated in the context of a case study based on a vehicle system design realized as contract work.

Simulator Coupling for Network Fault Injection Testing