Although the description of this forum seems to suggest that this is the dev forum for admin console in AS, i don't think this is the right forum for discussing the Embedded Jopr admin console shipped in the AS. But i can't find any dev forums for the Embedded Jopr. Probably the recent forum changes lead to this being the sole admin console dev forum.
Anyway, the feature you are requesting for has been tracked here https://jira.jboss.org/jira/browse/JOPR-202
I am using Community Version: jboss-5.1.0.GA
I could not find the DataSource Connection Test Tab in the JBoss Admin Console. Can somebody tell me in which version of JBoss is this available?