TestNG (http://testng.org/doc/index.html)JUnit (http://junit.org) and focus on the Server Side Testing (https://sling.apache.org/documentation/bundles/org-apache-sling-junit-bundles.html)Pax Exam (Somewhat dead... no activity in a year https://ops4j1.jira.com/wiki/display/PAXEXAM4/Documentation)Mock...