public void UpdateItemQuality_Should_Return_The_Expected_Values(string Name, int sellin, int quality, int expectedSellin, int expectedQuality) { //Arrange var item = new Item { Name = Name, Quality = quality, SellIn = sellin }; GildedRose gildedRose = new GildedRose(); //Act gildedRose.UpdateItemQuality(item); //Assert Assert.AreEqual(expectedSellin, item.SellIn); Assert.AreEqual(expectedQuality, item.Quality); }