public static void Setup(int testItems)
 {
     SetTestRepo();
     for(int i=0;i<testItems;i++){
         StockType item=new StockType();
         _testRepo._items.Add(item);
     }
 }
 public static void Setup(StockType item)
 {
     SetTestRepo();
     _testRepo._items.Add(item);
 }