Function: addBorrower(address borrower, address interestRateModel, uint256 debtCeiling)

Allows the caller who has access to this function to add new borrower and borrow configuration for them.

Inputs

• borrower

  • Constraints: Cannot be zero address — should not be already added.

  • Impact: The borrower address.

• interestRateModel

  • Constraints: Cannot be zero address.

  • Impact: The address of the interest rate model; the calculateInterestRate function of the contract returns the latest borrower-specific interest rate.

• debtCeiling

  • Constraints: No constraints.

  • Impact: The debt limit — if the debt balance of the borrower is more than debtCeiling, the _availableToBorrow returns zero.

Branches and code coverage

Intended branches

• borrowerConfig was updated.

  Test coverage

• New borrower was added.

  Test coverage

Negative behavior

• Non-whitelisted caller

  Negative test

• Borrower was already added.

  Negative test

• borrower is zero address

  Negative test

• interestRateModel is zero address

  Negative test