Basically, the failing delayed test would fire two web requests during
the proceedings. In unfortunate timing, the first would succeed and the
test would think "everything is okay", but the actual request loading
results has not yet run.
This check ensures *something* is loaded, which seems to be enough to
make things reliable.
As seen: https://github.com/ppy/osu/pull/17252/checks?check_run_id=5545717506
The `PlaylistsResultsScreen` takes a lease on the `Beatmap` bindable
when entered. During `SetUp`, the `Beatmap` bindable is reassigned but
fails in cases where an existing test instance of the screen hasn't been
exited yet. This fix moves the assignment into the `SetUpSteps` function
after `base.SetUpSteps` is called which will exit the existing screens
first.
The main goal here is to remove the inheritance, since realm doesn't
like that. Unfortunate that we can't use object initialisers in a few of
these places, but no real way around that.
