In this work we propose a path-oriented test generation procedure called POTENT to generate high quality tests for transition faults. Both weak non-robust and strong non-robust tests can be generated by POTENT. We classify transition fault tests into six types according to their activation and propagation methods. The basic idea of POTENT is to test a transition fault along a longest testable path passing through the fault site. For transition faults that are activated or propagated through multi-paths, heuristics are proposed to maximize the propagation delay of the target fault. We also propose an efficient method to evaluate the quality of a given transition fault test set. Experimental results show that POTENT generates higher quality transition fault test sets than the conventional test generation method.