Function: createOffer(uint256 tokenId, uint256 amount, uint256 askPrice)

The function allows a user to create a new offer by locking ERC-1155 tokens in the contract and setting an ask price.

Inputs

• tokenId

  • Control: Arbitrary.

  • Constraints: None.

  • Impact: The parameter specifies the identifier of the ERC-1155 token to be locked in the offer.

• amount

  • Control: Arbitrary.

  • Constraints: Must be greater than or equal to minimumOfferAmount.

  • Impact: The parameter specifies the amount of tokens to lock in the offer.

• askPrice

  • Control: Arbitrary.

  • Constraints: Must be greater than zero and less than or equal to 1e6.

  • Impact: The parameter specifies the asking price for the offer in USDC equivalent.

Branches and code coverage

Intended branches

• A new offer structure is created, offerIdCounter is incremented, and the data is added to offers.

  Test coverage

• The tokens are transferred from the creator to the contract, and offerId is recorded in the userOffers mapping.

  Test coverage

Negative behavior

• Revert if amount is below minimumOfferAmount.

  Negative test

• Revert if askPrice is not within an acceptable range.

  Negative test