public void When_IsApplicable_Called_For_DecentVehicles_Then_Result_ShouldBe_True()
        {
            // arrange
            var zeroYearsStatery = new DecentAgeStrategy();
            var vehicaleAge      = 5;
            var expected         = true;

            // act
            var result = zeroYearsStatery.IsApplicable(vehicaleAge);

            // assert
            Assert.AreEqual(expected, result);
        }
        public void When_CalculatePriceReductionByMileage_Called_For_ZeroMileage_Then_Result_ShouldBe_Expected()
        {
            // arrange
            var expected = 0m;
            var decentVehicleStrategy = new DecentAgeStrategy();
            var mileage = 0;

            // act
            var result = decentVehicleStrategy.CalculatePriceReductionByMileage(mileage);

            // assert
            Assert.AreEqual(expected, result);
        }