public void CanCloseAccountAndReturnMoney()
        {
            var dueDate = new DateTimeOffset(new DateTime(2018, 1, 1));
            var account = new PolicyAccount("C", "C", "E", "E");

            account.ExpectedPayment(10M, dueDate);
            account.InPayment(10M, dueDate);

            account.Close(new DateTime(2018, 6, 1), 5M);

            Equal(PolicyAccountStatus.Terminated, account.Status);
        }