public void CalculateTax_WhenEnteringBeverages_ReturnTax()
{
//Arrange
List <IBeverage> beverages = new List <IBeverage>
{
new Tea(1, "Green Tea", "Just green tea", 3, @"Images\greenTea.png", @"BackgroundImages\greenTea.png", true, true, false, true),
new Tea(2, "Black Tea", "Just black tea", 4, @"Images\blackTea.jpg", @"BackgroundImages\blackTea.png", true, false, true, true),
new Coffee(3, "Black Coffee", "Black coffee", 3, @"Images\blackCoffee.jpg", @"BackgroundImages\coffeeBlack.png", false, true, false),
};
//Act
double result = testPrice.CalculateTax(beverages);
//Assert
Assert.AreEqual(2.1, result);
}