Function: transferToQueue(address caller, uint256 amount)

This transfers asset from the caller to the QueueContract.

Inputs

• caller

  • Control: Fully controlled.

  • Constraints: No constraints.

  • Impact: The caller of the function.

• amount

  • Control: Fully controlled.

  • Constraints: No constraints.

  • Impact: The amount to transfer.

Branches and code coverage (including function calls)

Intended branches

• The function checks if the msg.sender has a valid asset and transfers the specified amount.

  Test coverage

• The function emits a QueueDeposit event.

  Test coverage

Negative behavior

• The function reverts if the asset is address(0) or if the transferFrom operation fails.

  Negative test

Function call analysis

• asset.transferFrom(caller, address(this), amount)

  • What is controllable? caller and amount.

  • If return value controllable, how is it used and how can it go wrong? N/A.

  • What happens if it reverts, reenters, or does other unusual control flow? If this reverts, the entire call fails --- no reentrancy issues.