So you expect the operator to carry out periodic operational or function checks on the system, but not Boeing during system testing prior to delivery?
No. Both Boeing and the operator will have to do checks. Boeing during manufacturing and the operator if related aircraft wiring or the fire bottles are worked on.
The problem is that this is one of those functions that cannot be easily tested from end to end. because that would involve discharging the bottles. So some attention must be paid at the design stage to possible errors that could be introduced during the manufacturing or maintenance steps to ensure that the possibility of such errors are minimized. Basically, make things so there's only one way they can go together correctly. And this includes the suppliers of various components, like the fire bottles.