Foundry UUPS Upgradeable Contracts

A Foundry UUPS Upgradeable Contracts Project that is part of Cyfrin Solidity Blockchain Course.

1. ERC1967Proxy on Sepolia Testnet
2. BoxV1 on Sepolia Testnet
3. BoxV2 on Sepolia Testnet

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)

Quick Start

git clone https://github.com/dannweeeee/foundry-upgrades-f23
cd foundry-upgrades-f23
forge build

Usage

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

forge test

Test Coverage

forge coverage

and for coverage based testing:

forge coverage --report debug

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.
  • You can learn how to export it here.
• SEPOLIA_RPC_URL: This is url of the goerli 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 tesnet ETH. You should see the ETH show up in your metamask.

2. Deploy

make deploy ARGS="--network sepolia"

3. Upgrade

make upgrade  ARGS="--network sepolia"

Scripts

Instead of scripts, we can directly use the cast command to interact with the contract.

For example, on Sepolia:

1. Call getNumber()

cast call 0x42446Ea6C7337883911A5DdbA26e6B9Fb7B9876A "getNumber()" --rpc-url $SEPOLIA_RPC_URL

2. Send setNumnber()

cast send 0x42446Ea6C7337883911A5DdbA26e6B9Fb7B9876A "setNumber(uint256)" 77 --rpc-url $SEPOLIA_RPC_URL --private-key $PRIVATE_KEY

3. Call getNumber() again

cast call 0x42446Ea6C7337883911A5DdbA26e6B9Fb7B9876A "getNumber()" --rpc-url $SEPOLIA_RPC_URL

4. Convert Hex to Dec

cast --to-base 0x000000000000000000000000000000000000000000000000000000000000004d dec

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