--- title: Implementing console log in your smart contract _Follow along with this video:_ --- ### Debugging using console log Do you remember how inside our `Raffle.t.sol` we did `import {Test, console} from "forge-std/Test.sol";` to import the console? And then again, we did the same thing inside the Script files? This is not limited only to testing and scripting. Let's demonstrate: 1. Add the following in the import section of your `Raffle.sol` file: `import {console} from "forge-std/Script.sol";` 2. Change the `enterRaffle` function as follows: ```solidity function enterRaffle() public payable { if (s_raffleState == RaffleState.CALCULATING) revert Raffle__RaffleNotOpen(); if (msg.value < i_entranceFee) revert Raffle__NotEnoughEthSent(); console.log("Debugging at its finest"); s_players.push(payable(msg.sender)); emit EnteredRaffle(msg.sender); } ``` 3. Run `forge test --mt testRaffleRecordsPlayerWhenTheyEnter -vv`. The result: ``` Ran 1 test for test/unit/RaffleTest.t.sol:RaffleTest [PASS] testRaffleRecordsPlayerWhenTheyEnter() (gas: 71482) Logs: Creating subscription on ChainID: 31337 Your sub Id is: 1 Please update subscriptionId in HelperConfig! Funding subscription: 1 Using vrfCoordinator: 0x90193C961A926261B756D1E5bb255e67ff9498A1 On ChainID: 31337 Adding consumer contract: 0xBb2180ebd78ce97360503434eD37fcf4a1Df61c3 Using VRFCoordinator: 0x90193C961A926261B756D1E5bb255e67ff9498A1 On chain id: 31337 Debugging at its finest Suite result: ok. 1 passed; 0 failed; 0 skipped; finished in 11.59ms (84.60µs CPU time) ``` You can see the `Debugging at its finest` message at the end of the log. Super nice! **Note:** Make sure to delete those before deploying to mainnet, because this will cost gas, and you do not want to spend that!