public void GetQualityChangeOfValue_DifferentParameters_ReturnGoodResult(string itemName, int itemSellIn, int expectedChangeOfValueResult)
        {
            GildedRose gildeRose = new GildedRose(Items);
            int        result    = gildeRose.GetQualityChangeOfValue(itemName, itemSellIn);

            Assert.AreEqual(expectedChangeOfValueResult, result, $"GetQualityChangeOfValue(): expected {expectedChangeOfValueResult}; got {result}; parameters ( itemName {itemName}; itemSellIn {itemSellIn} )");
        }