public void LatteClass_CostMethod_ShouldReturnCorrectPriceBasedOnCoffeSize(CoffeSizeType coffeeSize)
{
// Arrange
var basePrice = 3.00m;
var expectedCost = basePrice + (((int)coffeeSize / 100) * basePrice);
// Act
var obj = new Latte(coffeeSize);
// Assert
Assert.That(obj.Cost(), Is.EqualTo(expectedCost));
}