Hi Andres,
Just an aside, your point about CONNECTION LIMIT was something that just didn't come to my mind and is probably a good way to test ALTER DATABASE with CONNECTION LIMIT.
Its just that that actually wasn't what I was testing there. That 'CONNECTION LIMIT' test was coupled with CREATE DATABASE because I wanted to test that 'branch' in the CREATE DATABASE function just to ensure that there was a regression test that tests CONNECTION LIMIT specifically with CREATE DATABASE. That's all. A check to confirm whether connection limit restrictions actually got enforced was something I missed, but well, its out of the window for now anyway.