FundMe is a minimal crowdfunding platform written in Solidity and targeting the Ethereum EVM.

• git
  • You'll know you did it right if you can run git --version and you see a response like git version 2.34.1.
• foundry
  • You'll know you did it right if you can run forge --version and you see a response like forge 0.2.0 (6fcbbd8 2023-12-15T00:23:04.369635679Z.

git clone https://github.com/oxcabe/foundry-fund-me.git
cd foundry-fund-me
forge build

forge script script/DeployFundMe.s.sol

Run tests:

forge test

Run specific tests that match some RegEx by running:

forge test --mt <regexForMatchingTests>

Run tests in Sepolia with:

forge test --fork-url <SEPOLIA_RPC_URL>

forge coverage

You'll want to set your SEPOLIA_RPC_URL and PRIVATE_KEY as environment variables. You can add them to a .env file, similar to what you see in .env.example.

• PRIVATE_KEY: The private key of your account (like from metamask). NOTE: FOR DEVELOPMENT, PLEASE USE A KEY THAT DOESN'T HAVE ANY REAL FUNDS ASSOCIATED WITH IT.
  • You can learn how to export it here.
• SEPOLIA_RPC_URL: This is url of the sepolia testnet node you're working with. You can get setup with one for free from Alchemy

Optionally, add your ETHERSCAN_API_KEY if you want to verify your contract on Etherscan.

Head over to faucets.chain.link and get some testnet ETH. You should see the ETH show up in your metamask.

forge script script/DeployFundMe.s.sol --rpc-url $SEPOLIA_RPC_URL --private-key $PRIVATE_KEY --broadcast --verify --etherscan-api-key $ETHERSCAN_API_KEY

After deploying to a testnet or local net, you can run the following scripts:

cast send <FUNDME_CONTRACT_ADDRESS> "fund()" --value 0.1ether --private-key <PRIVATE_KEY>

cast send <FUNDME_CONTRACT_ADDRESS> "withdraw()"  --private-key <PRIVATE_KEY>

To run code formatting:

forge fmt

Big thanks to Cyfrin for providing free learning resources that allowed me to learn Foundry and Solidity development by doing this amazing project ❤️