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Cyfrin F23 / foundry-erc20-f23
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    ChefGPT

    Cyfrin Foundry-23 implementation of the ERC20 standard in foundry.

    test.sol
    Base.sol
    Script.sol
    StdAssertions.sol
    StdChains.sol
    StdCheats.sol
    StdError.sol
    StdInvariant.sol
    StdJson.sol
    StdMath.sol
    StdStorage.sol
    StdStyle.sol
    StdUtils.sol
    Test.sol
    Vm.sol
    console.sol
    console2.sol
    IMulticall3.sol
    ERC20.sol
    IERC20.sol
    IERC20Metadata.sol
    Context.sol
    DeployOurToken.s.sol
    ManualToken.sol
    OurToken.sol
    OurTokenTest.t.sol

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    Cyfrin F23 / foundry-erc20-f23
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      ChefGPT
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      Get Cookin'

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      Foundry ERC20

      This is a section of the Cyfrin Foundry Solidity Course.

      ⭐️ (7:08:04) | Lesson 10: Foundry ERC20

      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-erc20-f23
      cd foundry-erc20-f23
      forge install 
      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

      OpenZeppelin

      OpenZeppelin Contracts Docs

      OpenZeppelin GitHub Repo

      Installing OpenZeppelin Contracts Package

      forge install OpenZeppelin/openzeppelin-contracts --no-commit
      

      Start a local node

      make anvil
      

      Deploy

      This will default to your local node. You need to have it running in another terminal in order for it to deploy.

      make deploy
      

      Deploy - Other Network

      See below

      Testing

      We talk about 4 test tiers in the video.

      1. Unit
      2. Integration
      3. Forked
      4. Staging

      This repo we cover #1 and #3.

      forge test
      

      or

      forge test --fork-url $SEPOLIA_RPC_URL
      

      Test Coverage

      forge coverage
      

      Deployment to a testnet or mainnet

      1. 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.
      • 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.

      1. Get testnet ETH

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

      1. Deploy
      make deploy ARGS="--network sepolia"
      

      Scripts

      After deploy to a testnet or local net, you can run the scripts.

      Using cast deployed locally example:

      cast send <ERC20_CONTRACT_ADDRESS> "transfer()"  --value 0.1ether --private-key <PRIVATE_KEY> --rpc-url $SEPOLIA_RPC_URL
      

      or, to create a ChainlinkVRF Subscription:

      make createSubscription ARGS="--network sepolia"
      

      Estimate gas

      You can estimate how much gas things cost by running:

      forge snapshot
      

      And you'll see and output file called .gas-snapshot

      Formatting

      To run code formatting:

      forge fmt
      

      Thank you!

      If you appreciated this, feel free to follow me or donate!

      ETH/Arbitrum/Optimism/Polygon/etc Address: 0x9680201d9c93d65a3603d2088d125e955c73BD65

      Patrick Collins Twitter Patrick Collins YouTube Patrick Collins Linkedin Patrick Collins Medium

      Cyfrin Foundry-23 implementation of the ERC20 standard in foundry.
      test.sol
      Base.sol
      Script.sol
      StdAssertions.sol
      StdChains.sol
      StdCheats.sol
      StdError.sol
      StdInvariant.sol
      StdJson.sol
      StdMath.sol
      StdStorage.sol
      StdStyle.sol
      StdUtils.sol
      Test.sol
      Vm.sol
      console.sol
      console2.sol
      IMulticall3.sol
      ERC20.sol
      IERC20.sol
      IERC20Metadata.sol
      Context.sol
      DeployOurToken.s.sol
      ManualToken.sol
      OurToken.sol
      OurTokenTest.t.sol