Parallel Cross-platform Unit Testing for Real-time Embedded Systems

Embedded systems are used in a wide variety of applications (e.g. automotive agricultural home security industrial medical military and aerospace) due to their small size low-energy consumption and the ability to control real-time peripheral devices precisely. These systems however are different from each other in many aspects: processors memory size develop applications/OS hardware interfaces and software loading methods. Unit testing is a fundamental part of software development and the lowest level of software testing as it tests individual or groups of functions methods and classes to increase confidence that the developed software satisfies both software specifications and user requirements. Although hundreds of unit testing frameworks exist none of them address the diverse properties of real-time embedded platforms. This inspires us to introduce XEUnit a cross-platform unit testing framework for real-time embedded systems. To address the time constraints in real-time embedded systems we evaluate the impact of runtime overhead from traditional instrumentation through a case study of time-sensitive algorithms.