public void GivenAnnualPremiumWhenAnnualPremiumIsPresentThenReturnTotalPremium() { // Arrange var annualPremium = 50; var premiumCalculator = new PremiumCalculator(); // Act var totalPremium = premiumCalculator.CalculateTotalPremium(annualPremium); // Assert Assert.AreEqual(52.5M, totalPremium); }