I am about done with the plumbing for an addition and need to do a
pressure test. My question is, should I install all of the shower
mixing valves and outside spigots for the test or leave those off and
just cap the pipes before that point?

Jim L wrote:

I am about done with the plumbing for an addition and need to do a
pressure test. My question is, should I install all of the shower
mixing valves and outside spigots for the test or leave those off and
just cap the pipes before that point?


Cap them off.