Seems to me an ECAM announcing low hydraulic and then a test flight the next day would negate any fingers pointed at the crew.

I'm only curious as to who did the test flight. Seems most are done by fresh Captains on reserve instead of check airmen. Not the safety first choice IMO.

Not enough thought given to something happening after an untrained crew gets into a situation or even signs off a plane later found not to be airworthy.