Testing Server Browser?

I have some code based on the UT server browser code that I need to test. But since my game doesn’t exist on the web yet, I’m not sure how to test to see if it’s working. I tried launching a server and client on the same machine, but it doesn’t show up in the browser. I believe this is because there’s no master server to query. I’m guessing you need Steam up and running before any of this works. Any insight to this would be appreciated.