public void AfterTaxPrice_Should_Equal_To_PreTaxPrice_When_TaxRate_Is_Zero()
{
const decimal preTaxPrice = 12.49m;
var taxRounder = new Mock<ITaxRounder>();
var calc = new TaxCalculater(0, taxRounder.Object);
decimal price = calc.CalculateTax(preTaxPrice) + preTaxPrice;
Assert.AreEqual(preTaxPrice, price);
}
public void CalculateIncomeTaxSuccessfully()
{
TaxCalculater calculater = new TaxCalculater();
var result = calculater.CalculateIncomeTax(60050);
Assert.IsTrue(result == 11063.25M);
result = calculater.CalculateIncomeTax(120000);
Assert.IsTrue(result == 32347M);
}
public void AfterTaxPrice_Should_Be_Calculated_Correctly()
{
const decimal preTaxPrice = 14.99m;
const decimal roundedTax = 1.50m;
const decimal taxRate = 0.1m;
var taxRounder = new Mock<ITaxRounder>();
taxRounder.Setup(x => x.Round(preTaxPrice * taxRate)).Returns(roundedTax);
var calc = new TaxCalculater((double) taxRate, taxRounder.Object);
decimal price = calc.CalculateTax(preTaxPrice) + preTaxPrice;
const decimal expected = preTaxPrice + roundedTax;
Assert.AreEqual(expected, price);
}