From Huff, Huff x Foundry is a Foundry library for working with Huff contracts. This enables the use of Foundry to test code for Huff contracts. As a modular toolkit for Ethereum development, Foundry is fast and allows users the ability to easily compile their contracts and test code to ensure it's safe. With Huff, there are not many automatic safety checks on code, so using a tool like Foundry is important.