Changes

Don't worry, this will not interfere with your regular Raven wallet, just make sure both wallets are not running at the same time. For those who are technically inclined, running in testnet mode does not overwrite any of the blockchain data or wallet files of Ravencoin’s main network. Instead, it will create a subfolder named testnet3 inside your data folder where all testnet related data and wallets reside. '''If you would prefer to err on the side of caution, consider running your testnet wallet on a different computer.'''

There are currently a couple of tools available to assist you with testnet testing.