test: Add TestGenesisHash (protocol parameter verification)

[geoknee]

Description

• Adds a new test to validate the genesis block hash against the provided genesis config
• This test generates a new genesis block from (the provided chainconfig + some hardcoded values) and checks it matches the declared genesis hash. Thus (trusting the declared hash is correct) if the check passes we know the config is "correct" according to
  • the function which builds the block.
  • the config read from superchain (e.g. genesis block nonce and many other fields)
  • the config baked into the function above (e.g. OptimismConfig)

Additional context

• Inspired by Josh's op-genesis tool.

• I think there is an opportunity to move a lot or all of the code looped in from op-geth into superchain. If we want to do that, will require some coordination between the two repos. Dependency relationships:

  • validation => op-geth (remove)
  • validation => superchain (keep)
  • op-geth => superchain (keep)

Metadata

• Towards https://github.com/ethereum-optimism/client-pod/issues/486 (Task 1)

[zchn]

Created #75 so you don't need my review afterwards

[mslipper]

As we discussed during our 1:1, we should ideally move the genesis generation loading code + hardcoded genesis hashes into the Registry.

[geoknee]

As we discussed during our 1:1, we should ideally move the genesis generation loading code + hardcoded genesis hashes into the Registry.

Agreed. I'll queue that up for future work #78.