FIXME - i think there's some information in chris' brain dumps page that should get ported here.
In the meantime, if you're interested in helping with unit tests, come see us in #mediagoblin on freenode.net.
Running the unit tests
To run the unit tests, do:
To run a specific test, do:
runtests.sh does some minor setup and calls py.test. If you pass in -h, you'll get the py.test help which shows you options for other things you can do with the unit test system.