public void Zone4()
        {
            zoneCalculator zoneCalc4 = ShippingCalculatorDelegate.Zone4;
            double         zone4     = 100;
            double         Zone4     = zoneCalc4(zone4);

            Assert.AreEqual(129, Zone4);
        }
        public void Zone2()
        {
            zoneCalculator zoneCalc2 = ShippingCalculatorDelegate.Zone2;
            double         zone2     = 100;
            double         Zone2     = zoneCalc2(zone2);

            Assert.AreEqual(137, Zone2);
        }
        public void Zone3()
        {
            zoneCalculator zoneCalc3 = ShippingCalculatorDelegate.Zone3;
            double         zone3     = 100;
            double         Zone3     = zoneCalc3(zone3);

            Assert.AreEqual(108, Zone3);
        }
        public void Zone1()
        {
            zoneCalculator zoneCalc1 = ShippingCalculatorDelegate.Zone1;
            double         zone1     = 100;
            double         Zone1     = zoneCalc1(zone1);

            Assert.AreEqual(125, Zone1);
        }