It would also be nice if it could support controlling multiple framework instances. As mentioned before, an OSGi Framework can be controlled using a standard interface: org.osgi.framework.launch.Framework extends Bundle. In some test scenarios (especially ones involving Distributed OSGi) you'd want to bring up multiple frameworks and run tests bundles in both of them. The unit test would then essentially orchestrate the whole thing and make assertions on behaviour in these two frameworks which can be obtained through the bundle context of either.