[Feature Request] Foundry Forge Tests

[gtsui]

Network

zkSync Era

Provide a brief description of the feature you would like to see implemented.

Currently several features from foundry are compatible for zksync. However, one of the most crucial tools that I personally, and I'm sure a lot of other devs, use is foundry forge tests forking mainnet. I understand this feature may not be easily implementable, but are there plans to support this any time in the near future? Thanks!

Who does this feature request benefit the most (users, developers, protocol, etc.)?

developers, protocols

Additional Details

No response

[uF4No]

@gtsui yes! To support forking on tests we'd need to integrate the just released in-memory node with our custom Foundry implementation. In addition, we'll also integrate it with Hardhat by the way.

If you need to run simulate transactions against a mainnet fork now, you can fork mainnet following the instructions here and run scripts agains the in-memory node, which runs in http://localhost:8011.

Note that the in-memory node is still in alpha so, if you find any issues you can report them in its repository