Cannot run tests

[PatrickAlphaC]

🐛 Script Bug Report

% yarn test-node
yarn run v1.22.19
$ ./bin/anvil-zksync --protocol-version=28 --emulate-evm
[anvil_zksync-gen-0] Generic error: Block #67399772 from fork=https://mainnet.era.zksync.io/ is using unsupported protocol version `29`. anvil-zksync only supports the following versions: 26, 27, 28.
Error: AnvilGeneric(GenericError { message: "Block #67399772 from fork=https://mainnet.era.zksync.io/ is using unsupported protocol version `29`. anvil-zksync only supports the following versions: 26, 27, 28." })
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

📝 Description

After installing anvil, and trying to run tests, you get the above error.

🔄 Reproduction Steps

cd system-contracts
yarn install-anvil
yarn test-node

[JunaidCD]

Hi, thanks for reporting this.
I can reproduce the failure when running yarn test-node: the forked zkSync mainnet block uses protocol version 29, while anvil-zksync currently supports up to 28, causing the script to exit early.

I’d like to look into improving how this case is handled (e.g. clearer error messaging, early detection, or guidance on pinning a supported protocol/version), and see if there’s a small, safe fix or documentation update that makes this failure mode clearer for users.

Please let me know if that approach sounds reasonable.