Because there's nothing worse than finding out that the piece you’ve come to love at the store doesn’t work after you bring it home, you have to test the item right then and there. A lot of used furniture is also sold as-is with no return policy, so there’s no way you can return it for any reason once you’ve purchased it. Just remember to ask about the store’s policies when it comes to testing out items at the store. And do it after you’ve already checked its quality and cleanliness.
Sit on a chair or couch for a few minutes to make sure it’s comfortable and holds your weight. For cabinets, dressers, and similar pieces, open all the drawers to make sure they easily slide in and out and the handles don’t fall apart after a few uses. For tables, lean or push on them from an angle to make sure they’re steady on their feet.