feat: Add test to protocol contracts

[andresaiello]

Summary

• Add test to protocol contracts
• Fix some validations already discussed with the protocol team

Test added:
ConnectorZEVM tests
ZetaConnectorZEVM
✔ Should revert if the zetaTxSender has no enough zeta
✔ Should revert if the zetaTxSender didn't allow ZetaConnector to spend Zeta token
✔ Should emit ZetaSent on success
✔ Should transfer value and gas to fungible address
✔ Should update wzeta address if is call from fungible address
✔ Should revert if try to update wzeta address from other address

ERC20Custody tests
ERC20Custody
✔ Should update the tss address
✔ Should revert if updateTSSAddress not called by tssUpdater
✔ Should update zeta fee
✔ Should revert if updateZetaFee not called by tssUpdater
✔ Should revert if updateZetaFee is higher than max
✔ Should renounce tssUpdater
✔ Should whitelist
✔ Should revert if whitelist is not called by tss
✔ Should unwhitelist
✔ Should revert if unwhitelist is not called by tss
✔ Should emit Deposit event on deposit
✔ Should emit Deposit event and do the right math if is called twice (43ms)
✔ Should revert deposit if is paused
✔ Should revert deposit if is not whitelisted
✔ Should revert deposit if has no zeta to pay fee
✔ Should emit Withdrawn event
✔ Should revert if withdraw is not called by tss
✔ Should not revert withdraw if is paused
✔ Should revert withdraw if is not whitelisted
✔ Should not allow reentrant calls to Deposit method
✔ Should not allow reentrant calls to Witdraw method

ZRC20 tests
ZRC20Contract
✔ Should return name
✔ Should return symbol
✔ Should return decimals
✔ Should return chainId
✔ Should return coinType
✔ Should return gasLimit
✔ Should return systemContractAddress
✔ Should return totalSupply
✔ Should return balanceOf
✔ Should return allowance
✔ Should deposit if is called by fungible module
✔ Should not deposit if is not called by fungible module
✔ Should transfer

40 passing (6s)

[lumtis]

Looks good to me.
I think we could add test as part of the CI in .github

PS: didn't realize it was still in draft mode

[lucas-janon]

LGTM