TPT is a test tool used in the testing of embedded control systems. It supports full automation testing in a real-time context and can use continuous as well as discrete signals. Test cases are modelled graphically. Thanks to the built–in platform independence, TPT can be used universally from Model-test (MiL), through Software-test (SiL) to Hardware-in-the-Loop-Test (HiL). TPT currently offers test support for MATLAB/Simulink models, TargetLink, CAN, ‘C’ code HiL test systems as well as some proprietary environments.