public DutyChargesBilled Calculation(int units)
        {
            DutyCharges       dutyCharges = new DutyCharges();
            DutyChargesBilled dcbilled    = new DutyChargesBilled();

            dcbilled = dutyCharges.DutyChargesCalculation(units);

            return(dcbilled);
        }
        public void ShouldReturnDutyChargesWhenUnitsConsumedForSlab4()
        {
            DutyCharges       dutycharges = new DutyCharges();
            int               unit        = 700;
            DutyChargesBilled result      = dutycharges.DutyChargesCalculation(unit);
            double            actual      = result.totaldutycharges;
            double            expected    = 93.225;

            Assert.AreEqual(expected, actual);
        }
        public void ShouldReturnDutyChargesWhenUnitsConsumedIsZero()
        {
            DutyCharges dutycharges = new DutyCharges();

            DutyChargesBilled result   = dutycharges.DutyChargesCalculation(0);
            double            actual   = result.totaldutycharges;
            double            expected = 0;

            Assert.AreEqual(expected, actual);
        }