A few years ago, some friends had a washing machine hose burst in their second-floor laundry that caused about $20,000 damage to their house. So I added a piece of boilerplate in my report that recommends the installation of reinforced washing machine hoses.
When I replaced my own washer hoses, I kept the old rubber ones. I carry one in my vehicle along with a nice big fluffy towel.
If no washer is installed at the house I’m inspecting, I screw my washer hose on the washing machine faucets to test them for leaks and to make sure that the hot and cold water lines aren’t reversed. I run a gallon or so from each faucet directly into the washer drain. This also will let me know if there is a leak in the drain pipe. The towel is necessary because this job always spills a little water. The towel also comes in handy when there’s an unexpected leak from any part of the plumbing system.
If a washer is installed, don’t even think about removing the hoses to test the system. Unless you have a truckload of towels.