Adam Bien's Weblog
ping for JavaEE 6/7 is released
Sometimes (often :-)) it is hard to say whether just the application or the whole application server is not working. Also debugging JNDI configuration may be challenging.
ping is a simplistic 5kb WAR which exposes JNDI, system properties and "echo" service through REST APIs.
Summer Workshops: From Java EE 7 Bootstrap and Effective Java EE 7 to Java EE 7 Architectures