Hi Jason,
If you are trading on your own broker demo account you can test the robots by backtesting them using the MT4 or MT5 Strategy Tester. Checking the results will inform you as to how often the robots place trades. Also check with your broker to make sure you can use Expert Advisors. I know Forex. com does not allow using Expert Advisors on their demo accounts but you can use them on their live accounts, as an example.
Alan,