public void Combine_ThrowsException_IfItemsAreDifferent()
{
EachesGroceryItem soup = new EachesGroceryItem("soup", 1.89M);
EachesGroceryItem bread = new EachesGroceryItem("bread", 2.30M);
EachesGroceryItemOrder a = new EachesGroceryItemOrder(soup, 3);
EachesGroceryItemOrder b = new EachesGroceryItemOrder(bread, 6);
Assert.ThrowsException <DifferingItemsException>(() => a.Combine(b));
}
public void AbstractCombine_ReturnsNewEachesGroceryItemWithCombinedCount()
{
EachesGroceryItem item = new EachesGroceryItem("soup", 2.00M);
IGroceryItemOrder a = new EachesGroceryItemOrder(item, 3);
IGroceryItemOrder b = new EachesGroceryItemOrder(item, 6);
EachesGroceryItemOrder result = (EachesGroceryItemOrder)a.Combine(b);
Assert.AreEqual(9, result.Count);
}
