Names the local function ProcessOrStopAsync so it does not shadow
Processable.TryProcessAsync, which means something else entirely, and asserts
the whole sentence a stopped run prints rather than a fragment of it.
Co-authored-by: rmcrackan <rmcrackan@gmail.com>
Two levels. The pure tests supply a run's history directly and check the
decision to stop: the count and size thresholds, the always-allow-one rule,
and that titles another process downloaded, or that this run attempted
without downloading, are not counted.
The loop tests drive the real run loop against a real library database with
a processable that records downloads the way DownloadDecryptBook does, which
is as close to a limited run as is possible without an Audible account. They
pin the behavior that matters at the boundary: five books under a limit of
two download two, and a run whose books end exactly at its limit reports
nothing, because nothing was cut short.
Co-authored-by: rmcrackan <rmcrackan@gmail.com>
