The two modules are currently already using Aquillian for JUnit test:

• model-jpa
• push-sender

As defined here:
https://github.com/aerogear/aerogear-unifiedpush-server/search?l=Maven+POM&q=Arquillian&type=&utf8=%E2%9C%93

This ticket could be used to make usage of Arquillian on other modules.

On that's currently a bit problematic is the "services" module, that does still use Apache OpenEJB etc, but would be nice to replace that w/ Arquillian