public void GetTotalTaxRatioShouldWorkCorrectly(ProductType type)
        {
            //Act
            var sut = TotalTaxRatio.Get(type);

            //Assert
            sut.Should().NotBe(0);
        }
        public void GetTotalTaxRatioShouldWorkCorrectlyForMortgageLoan(ProductType type)
        {
            //Act
            var sut = TotalTaxRatio.Get(type);

            //Assert
            sut.Should().Be(0);
        }
        public void WhenProductTypeIsZero_GetTotalTaxRatioShouldThrowArgumentException()
        {
            //Act
            var exception = Record.Exception(() => TotalTaxRatio.Get(0));

            //Assert
            exception.Should().NotBeNull();
            exception.GetType().Should().Be(typeof(ArgumentException));
        }