Foundry Fund Me This is a section of the Cyfrin Solidity Course.
⭐️ (0:00:00) | Lesson 7: Foundry Fund Me
Foundry Fund Me Getting Started Requirements Quickstart Optional Gitpod Usage Testing Test Coverage Deployment to a testnet or mainnet Scripts Withdraw Estimate gas Formatting Thank you! Getting Started Requirements git You'll know you did it right if you can run git --version and you see a response like git version x.x.x foundry You'll know you did it right if you can run forge --version and you see a response like forge 0.2.0 (816e00b 2023-03-16T00:05:26.396218Z) Quickstart git clone https://github.com/Cyfrin/foundry-fund-me-f23 cd foundry-fund-me-f23 forge build Optional Gitpod If you can't or don't want to run and install locally, you can work with this repo in Gitpod. If you do this, you can skip the clone this repo part.
Open in Gitpod
Usage Deploy: forge script script/DeployFundMe.s.sol Testing We talk about 4 test tiers in the video.
Unit Integration Forked Staging This repo we cover #1 and #3.
forge test or
// Only run test functions matching the specified regex pattern.
"forge test -m testFunctionName" is deprecated. Please use
forge test --match-test testFunctionName or
forge test --fork-url $SEPOLIA_RPC_URL Test Coverage forge coverage Deployment to a testnet or mainnet Setup environment variables 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.
Get testnet ETH Head over to faucets.chain.link and get some testnet ETH. You should see the ETH show up in your metamask.
Deploy forge script script/DeployFundMe.s.sol --rpc-url $SEPOLIA_RPC_URL --private-key $PRIVATE_KEY --broadcast --verify --etherscan-api-key $ETHERSCAN_API_KEY Scripts After deploying to a testnet or local net, you can run the scripts.
Using cast deployed locally example:
cast send <FUNDME_CONTRACT_ADDRESS> "fund()" --value 0.1ether --private-key <PRIVATE_KEY> or
forge script script/Interactions.s.sol --rpc-url sepolia --private-key $PRIVATE_KEY --broadcast Withdraw cast send <FUNDME_CONTRACT_ADDRESS> "withdraw()" --private-key <PRIVATE_KEY> Estimate gas You can estimate how much gas things cost by running:
forge snapshot And you'll see an output file called .gas-snapshot
Formatting To run code formatting:
forge fmt Thank you!