All the unit tests for the AS cluster module are run via the testsuite tests-clustering target, which starts two AS instances. This is painful and time consuming and discourages writing of simple unit tests that exercise a particular class, with no need for a larger integration.

Need to set up a src/tests tree in the cluster module, add simple unit tests to it, and integrate that into the overall testsuite run. The security module has this kind of setup; look to that to see how the overall testsuite integration is done.