_Follow along with this video:_ --- ### More refactoring One thing that we should do that would make our `getAnvilEthConfig` more efficient is to check if we already deployed the `mockPriceFeed` before deploying it once more. Remember how addresses that were declared in state, but weren't attributed a value default to address zero? We can use this to create our check. Right below the `function getAnvilEthConfig() public returns ...` line add the following: ```solidity if (activeNetworkConfig.priceFeed != address(0)) { return activeNetworkConfig; } ``` `getAnvilEthConfig` is not necessarily the best name. We are deploying something inside it, which means we are creating a new `mockPriceFeed`. Let's rename the function to `getOrCreateAnvilEthConfig`. Replace the name in the constructor. Remember how `testPriceFeedVersionIsAccurate` was always failing when we didn't provide the option `--fork-url $SEPOLIA_RPC_URL`? Try running `forge test`. Try running `forge test --fork-url $SEPOLIA_RPC_URL`. Everything passes! Amazing! Our test just became network agnostic. Next-level stuff! Take a break, come back in 15 minutes and let's go on!