Should I have a plumber check my bathtub faucet since it has never been used?
I purchased my home seven years ago. In a remote part of my houseI have an unused spare bathroom with a full tub. The tub's never been used (or shower). I clean it with a cleaner I bring into the bathroom so it isn't dirty! My question is, by not using it this long, if I turn it on now could it cause a leak. Is it wise to call a plumber to turn it on in case there's an issue? I just wonder if pipes get rusty from unuse and as such, could that cause a rupture. That's why I'm wondering if I should have a plumber nearby just in case something bad happens?
There is already water in the pipes, so if the pipes are fine now, turning on the water in that room shouldn't change things. At worst, you may have to replace/repair the faucet because the rubber fittings may have dried out and deteriorated, but it will just leak into the tub until it is fixed, so no harm done. The water may look dirty at first, too, as it will be pushing out all the dried build-up in the pipe.
I would turn it on.
Maybe turn the water on when you go in there to clean, from now on, just to keep everything in shape.

Replacing a sink drain is a two-person procedure, as someone is needed to hold the stopper in place. Replace a sink drain with tips from a certified HVAC tech and plumber in this free video on plumbing repairs.
A multimeter is used for measuring different types of voltage, amps and resistance. Use a multimeter with tips from a certified HVAC tech and plumber in this free video on electrical repairs.
Big Tony The Plumber shows you how to check an oil burner.
We decided to make this a little more fun and start our own series… “This Old Moby” We decided that calling it a MObile Home just sounds kinda weird… and makes people look at you a little funny. We tried several other terms of endearment, like shack and hut and crib, but nothing really fit good. Finally one night we were driving home and I said, I love the moby! And it fit. So, old 83 is now the Moby…. 