public void Add_1000_credit_and_400_debit_should_give_600_for_last_balance() { _bankAccount.AddCredit(1000); _bankAccount.AddDebit(400); _bankAccount.Print(_printer); Check.That(_printer.Statements.Count).Equals(2); Check.That(_printer.Statements[0].ToString()) .Equals("01/01/2016 || || 400.00 || 600.00 "); Check.That(_printer.Statements[1].ToString()) .Equals("01/01/2016 || 1000.00 || || 1000.00 "); }