Testing OSGi applications and services has always been a difficult challenge. Despite the development of several frameworks such as OPS4J Pax Exam, or junit4osgi, writing tests requires a non-negligible amount of code to manage the OSGi aspect of the test. Indeed, waiting and getting the service under test or releasing the service requires dealing directly with the OSGi framework and so the OSGi API. The OSGi Helper library is a small collection of classes to let tests focus on the behavior to verify instead of drowning the code in the depths of the OSGi development model.
The OSGi Helper library was developed by the Innovation department of akquinet, and was contributed to the OW2 Chameleon project.
This post explains the benefits brought by the library in comparison to plain OSGi tests.