It is crucial to write tests with possibly 100% coverage for smart contracts.
The following functions are not covered:
https://github.com/code-423n4/2022-12-tigris/blob/main/contracts/GovNFT.sol#L206-L216
https://github.com/code-423n4/2022-12-tigris/blob/main/contracts/GovNFT.sol#L311-L313
It is recommended to write tests for all possible code flows.
