Support for server-side JUnit tests, injected in a running Sling instance

I've been working on a prototype JUnit extension framework [1] that allows JUnit tests to be injected in a Sling instance, and executed via a test runner servlet.

Tests are not yet OSGi-aware in the first prototype, but they are dynamically injected as exported classes in a bundle that points to them with a Test-Package header. Apart from that they are 100% normal JUnit3 or 4 tests.

Next step is to use annotations to inject services in the tests, I'm thinking of something like

@TestReference
SlingRepository repository

And maybe

@Test
@OptionalTest(requiredService=repository)
public void someTest()...

which would ignore the test if the repository service is not present.

The prototype consists of two bundles: "extension" which is the test detection and runner services, and "testbundle" which provides a few example tests. To play with it, install the two bundles and access the test servlet at /system/sling/junit/

[1] http://svn.apache.org/repos/asf/sling/whiteboard/bdelacretaz/junit