Embodiments of the disclosure relate to testing a software interface for a streaming hardware device through simulation. According to the invention, torsion element is mounted in the chassis, in the second arms is connected with the wheel axle housing and extend essentially vertically upwardly therefrom. The article of manufacture comprises a data storage device tangibly embodying instructions to perform the method steps described above. A toothed gear sector rotatably mounted to an exterior of the second support plates and exhibits a polygonal shaped portion as well as an end shoulder offset and inwardly recessed from exteriorly defined teeth and the polygonal shaped portion. A core VM is associated with a shell VM configured to perform shell VM functions and communicate with the core VM.