They test you if you can do the work, you test them if they can pay. A company should be more financially stable than you, so they should pay for the recruiting process.

If they pay, it's their work. But if they give you real work to do for free, you probably don't want to work for them, as it's a good chance they'll take advantage of you again at some point.

Get really good at what you do and you'll find good work on your area or remotely.