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

This course will cover 4 different types of tests:

* **Unit tests**: Focus on isolating and testing individual smart contract functions or functionalities.
* **Integration tests**: Verify how a smart contract interacts with other contracts or external systems.
* **Forking tests**: Forking refers to creating a copy of a blockchain state at a specific point in time. This copy, called a fork, is then used to run tests in a simulated environment.
* **Staging tests**: Execute tests against a deployed smart contract on a staging environment before mainnet deployment.