chore:: Enhancements & Fixes#110
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WalkthroughThree new error constants are added to the error module, and corresponding error handling improvements are made in the campaign donation logic. Error checks for insufficient balance, allowance, and NFT configuration are now explicit, and test assertions are updated to match the new error messages. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant CampaignDonation
participant ERC20Token
participant NFTContract
User->>CampaignDonation: donate_to_campaign(amount)
CampaignDonation->>ERC20Token: check_balance(User)
alt Insufficient balance
CampaignDonation-->>User: revert with INSUFFICIENT_BALANCE
else Sufficient balance
CampaignDonation->>ERC20Token: check_allowance(User)
alt Insufficient allowance
CampaignDonation-->>User: revert with INSUFFICIENT_ALLOWANCE
else Sufficient allowance
CampaignDonation->>ERC20Token: transfer_from(User, Campaign)
CampaignDonation-->>User: donation successful
end
end
User->>CampaignDonation: mint_donation_nft()
alt NFT not configured
CampaignDonation-->>User: revert with NFT_NOT_CONFIGURED
else Caller not donor
CampaignDonation-->>User: revert with CALLER_NOT_DONOR
else Success
CampaignDonation->>NFTContract: mint NFT to User
CampaignDonation-->>User: NFT minted
end
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1 participant
closes #112
This PR includes the following improvements:
Improved Error Handling
Refactored error handling throughout the donation logic to provide clearer and more descriptive feedback in failure scenarios.
Allowance Check Before transferFrom
Added logic to verify that the contract has sufficient allowance from the user account before calling transferFrom. This ensures the transaction doesn’t revert due to missing approval.
User Balance Validation
Introduced a pre-transfer check to confirm that the user has enough token balance to cover the donation amount. This prevents attempts to donate more than the user's available balance.
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