Online Verification of Value-Passing Choreographies through Property-Oriented Passive Testing

Choreography supports the specification, with a global perspective, of the interactions between roles played by peers in a collaboration. Choreography conformance testing aims at verifying whether a set of distributed peers collaborates wrt. a choreography. Such collaborations are usually achieved through information exchange, thus taking data into account during the testing process is necessary. We address this issue by using a non-intrusive passive testing approach based on functional properties. A property can express a critical (positive or negative) behavior to be tested on an isolated peer (locally) or on a set of peers (globally). We support online verification of these kind of properties against local running traces of each peer in a distributed system where no global clock is needed. Our framework is fully tool supported.