Setup

Create a .env file in the project root. The rpc url is used for forked mainnet tests; the gas and eth prices can be omitted and are only used to measure gas costs of functions.

MAINNET_RPC_URL=<https rpc url>
GAS_PRICE_WEI=<current gas price in WEI>
ETH_PRICE_USD=<current USD/Ether price in WEI>

Example:

MAINNET_RPC_URL=https://ethrpc.url
GAS_PRICE_WEI=1000000000
ETH_PRICE_USD=4000000000000000000000

Foundry

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

Foundry consists of:

• Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
• Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
• Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
• Chisel: Fast, utilitarian, and verbose solidity REPL.

Documentation

https://book.getfoundry.sh/

Usage

Build

$ forge build

Test

$ forge test

Format

$ forge fmt

Gas Snapshots

$ forge snapshot

Anvil

$ anvil

Deploy

$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>

Cast

$ cast <subcommand>

Help

$ forge --help
$ anvil --help
$ cast --help