Prut4j: Protocol Unit Testing fo(u)r Java

This paper presents Prut4j: a tool to simplify unit testing of channel/queue-based communication protocols in concurrent Java programs. Prut4j offers two domain-specific languages to write, compile (to Java), and execute (with JUnit) high-level "protocol modules" and accompanying unit tests. Our first evaluation provides evidence for Prut4j’s expressiveness (network topologies, games, scientific kernels) and efficiency (Prut4j-based programs perform well in a third-party benchmark).