public void Return_Correct_HashCode_From_Fields()
{
var product = CreateProduct();
int expectedHashCode = product.AtKode ^ product.AtNmNr ^ product.HpKode ^ (byte)product.MutKod;
var comparer = new ProductComparer();
int result = comparer.GetHashCode(product);
Assert.AreEqual(expectedHashCode, result);
}
