public void BackstagePassInventoryItemTest_OnAdvanceToNextDay(int beforeSellIn, int beforeQuality, int afterSellIn, int afterQuality)
{
var item = new BackstagePassInventoryItem(TestId, "name", "category", beforeQuality, beforeSellIn);
item.OnAdvanceToNextDay();
Assert.AreEqual(afterSellIn, item.SellIn.Value);
Assert.AreEqual(afterQuality, item.Quality);
}
