public void TestScenarioA()
{
#region Arrange
List <SKU> _itemList = new List <SKU>();
_itemList.Add(item1);
_itemList.Add(item2);
_itemList.Add(item3);
var expectedAmount = 100;
#endregion
#region Act
var totalAmount = _promotionEngine.getTotalPrice(_itemList);
#endregion
#region Assert
Assert.AreEqual(expectedAmount, totalAmount);
#endregion
}