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Real-time embedded systems are becoming increasingly ubiquitous, controlling a wide variety of popular and safety-critical devices. Testing is the most commonly used method for validating software systems, and effective testing methodologies could be helpful for improving the dependability of these systems. In this paper the authors present a methodology for testing real-time embedded systems, directed specifically at exercising the interactions between system layers, and between the multiple user tasks that enact application behaviors, from the application layer. They augment this with a dynamic analysis on testing data that can detect failures related to incorrect usage of resources within critical sections. They show that the methodology can effectively detect faults in these systems.
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