I totally get all these points; is there any literature I can point our devs towards to convince them (a) #2 + #3 don't leave any corner cases and (b) they real

I totally get all these points; is there any literature I can point our devs towards to convince them (a) #2 + #3 don't leave any corner cases and (b) they really should take the time to do it (ultimately so I can put an automation solution around the the DB)?