Will start jboss, sleep, run all of the unit tests, shutdown jboss and produce the report. It needs some libraries in the classpath, these are set up in the (build.sh/build.bat) script. If you want to run the task from eclipse then you will need to configure your ant to have these extra libraries. It requires $JBOSS_HOME/client/jbossall-client.jar and $JBOSS_HOME/client/log4j.jar.
I haven't delved into the depths of ant classloading to figure out how to add jars to the classpath for a custom task.
Occasionally it fails with ClassDefNotFound, in that case run dev-deploy then run test. If it falls over with a different exception run the test task with the -verbose option on. It will give the stack trace of the offending code.