Checking that a security policy has been correctly deployed over a network is a key issue for system administrators. Specification and testing of such policies constitute fundamental steps in the development of a secure system. To address both challenges, we propose a framework to describe how modalities such as permissions, prohibitions and obligations -involving decomposable activities- can be integrated in a functional EFSM specification of a system to obtain a new specification of the system that takes into account the security policy. Then, we propose a method to automatically derive test sequences to test the implementation, using a dedicated tool developed in our laboratory. Finally, we apply our framework to a Weblog system case study to demonstrate its reliability.