public void UpdateLoanToWriteOff() { _loan.WrittenOff = false; _loan.Id = _loanManager.Add(_loan, 1); _loanManager.UpdateLoanToWriteOff(_loan.Id); Loan updatedLoan = _loanManager.SelectLoan(_loan.Id, false, false, false); Assert.IsTrue(updatedLoan.WrittenOff); }