public void GetBillAmount_For_PurchaseAmountLessThanZero_Throws_ArgumentException()
{
/* Arrange */
decimal purchaseAmount = -99.99m;
var regularCustomerDiscountStrategy = new PremiumCustomerDiscountStrategy();
/* Act */
_ = regularCustomerDiscountStrategy.GetBillAmount(purchaseAmount);
}
public void GetBillAmount_For_DifferentPurchaseAmounts_Returns_ExpectedDiscountedBillAmount(string purchaseAmount, string expectedDiscountedBillAmount)
{
/* Arrange */
var premiumCustomerDiscountStrategy = new PremiumCustomerDiscountStrategy();
/* Act */
var result = premiumCustomerDiscountStrategy.GetBillAmount(decimal.Parse(purchaseAmount));
/* Assert */
Assert.AreEqual(decimal.Parse(expectedDiscountedBillAmount), result);
}
