if already initialised as interface.ERC20, MintableForkToken Contract does not have mint attributes

[gosuto-inzasheru]

Environment information

• brownie Version: 1.17.0
• brownie-token-tester Version: 0.3.2
• ganache-cli Version: 6.12.2
• Python Version: 3.9.10
• OS: macos

What was wrong?

tokens that already have been initialised with brownie.interface.ERC20 do not have the mint attribute:

AttributeError: Contract 'ERC20' object has no attribute 'mint'

How can it be fixed?

instead of simply inheriting Contract, i think the MintableForkToken class should use a custom, hardcoded interface which extends brownie.interface.ERC20 with the necessary functions:

• mint
• updateGlobalPoolContract
• createTokens
• changeMaxSupply
• issue
• configureMinter