I am new to permits and inspections. I got my building permit to finish my unfinished basement. And would like to understand how much I can do, before the rough-in plumbing inspection.

I understand each area is different, etc. This is for a half bathroom, which had the rough-in for the sink and toilet there with caps.

The paper I was given, states: Rough-in: Installation of drainage system, venting system, and water distribution system.

So I am thinking. I put a tee in the cold and hot water lines, and run the lines down to stub outs, for the sink and toilet. Then cut the 3" waste pipe flush with floor and put flange w/ test cap in. Then just cut the cap off the sink drain, and put a 90 degree bow in, so in points out of the stud wall, and cap again.

Then the inspector comes, and does what, for the rough-in?

Should I have water pressure going in the lines, connect the tee to main?

How does he test, when there is a stub out in place, and no valve?

I have to wait until the sub-floor is in, to put the toilet flange in?

You DO NOT just cut the sink pipe and put an elbow on it. You put a tee on it for the sink and then run the vent up to "somewhere" and connect any other vents to it.

I normally go ahead and tie the water lines in, and place ball valves where the new water lines take off. Then I use a test gauge assembly and pressurize the pipes to 100 PSI.
The drains are connected as well but I use cleanout tees with test balls so that all the new drain piping can be pressurized to 5 PSI.