Here is how it was done on a 10 link
Look at 3-24-16, there are three entries.
First, the system was pressure tested before any fuel was added to ensure there were no leaks. 30 psi air from wing root to spider. No drop overnight. Leaks are always found.
2nd. Perform test at 1.25 max fuel flow at expected fuel pressure. A valve is needed. Put a clear section before the valve to see if any air bubbles are visible. None is the acceptable amount.
3rd Be quick on the pump switch as there is some delay between when the pump sucks air and when the pressure will drop. Listen for the sound change. It is distinctive.
4th - be prepared to discard the first few quarts of fuel as it will contain preservative and possible debris from lines.
5th - plumb a bypass for the servo (injected) and take fuel just before the spider.
Be a good housekeeper with the fuel everywhere. We weighed the fuel as it was easier than other measurements. Keep a good record of what went into and out of each tank. We had a tally sheet at each fuel cap.
Plumbing is different for carb, just hook to the hose at the inlet to the carb. Different numbers for pressure. Everything else the same.
If you do all this, you should be absolutely confident in your first (and all) flights.
A max flow test should be run if the system is down for a major part, filters, pumps etc. . Stuff happens, catch it on the ground rather than hitting the ground later.
Note - This RV10 went to 17.5k altitude and maintained full fuel pressure all the way w/o boost pump.