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The use of automated test tools for automotive ECU development has been increasing in recent years, in particular for software testing, system validation and verification, and regression testing. One of the challenges for the ECU development community is that test cases created at a specific phase of software development cannot be easily re-used upstream or downstream in the development process. For example, test cases developed for a model-in-the-loop (MiL) test environment can not be easily re-used on a hardware-in-the-loop (HiL) tests system. This results in significant costs associated with re-engineering test cases and/or poor software quality. At ETAS, we understand that a critical aspect of test case design is the ability to share and re-use test scripts on different HiL hardware platforms and across different development environments (e.g. MiL, SiL, and HiL).