public void test_BuyThings()
        {
            // var stockController = new
            var stockController = new ConcurrentCollections.StockController();
              //      stockController.LoadCurrentStock();
            //  ConcurrentDictionary<string, ConcurrentCollections.Thing> stock = new ConcurrentDictionary<string, ConcurrentCollections.Thing>();
            //  stock = prog.GetCurrentStock();

            //Add five items to the Things collection
            var Thing1 = new ConcurrentCollections.Thing()
            {
                ID = 1111,
                name = "UnitTest1Thing",
                price = 11.11,
                quantity = 0
            };
            var Thing2 = new ConcurrentCollections.Thing()
            {
                ID = 2222,
                name = "UnitTest2Thing",
                price = 22.22,
                quantity = 0
            };

            var Thing3 = new ConcurrentCollections.Thing()
            {
                ID = 3333,
                name = "UnitTest3Thing",
                price = 33.33,
                quantity = 0
            };

            var Thing4 = new ConcurrentCollections.Thing()
            {
                ID = 4444,
                name = "UnitTest4Thing",
                price = 44.44,
                quantity = 0
            };

            var Thing5 = new ConcurrentCollections.Thing()
            {
                ID = 5555,
                name = "UnitTest5Thing",
                price = 55.55,
                quantity = 0
            };
            //first, add items to collection with zero inventory

            //Task t1 = Task.Run(() => stockController.BuyThing(Thing1, 0, "UnitTestThing"));
            //Task t2 = Task.Run(() => stockController.BuyThing(Thing2, 0, "UnitTestThing"));
            //Task t3 = Task.Run(() => stockController.BuyThing(Thing3, 0, "UnitTestThing"));
            //Task t4 = Task.Run(() => stockController.BuyThing(Thing4, 0, "UnitTestThing"));
            //Task t5 = Task.Run(() => stockController.BuyThing(Thing5, 0, "UnitTestThing"));

            //stockController.BuyThing(Thing1, 0, "UnitTestThing1", _testThings);
            //stockController.BuyThing(Thing2, 0, "UnitTestThing2", _testThings);
            stockController.BuyThing(Thing3, 0, "UnitTestThing3", ref _testThings);
            //stockController.BuyThing(Thing4, 0, "UnitTestThing4", _testThings);
            //stockController.BuyThing(Thing5, 0, "UnitTestThing5", _testThings);

            TimeSpan workDay = new TimeSpan(0,10,0);
            simulateWork(stockController, workDay);
            foreach (var thingy in _testThings)
            {
                Console.WriteLine("thing: key " + thingy.Key + " value: " + thingy.Value.name + " price: " + thingy.Value.price
                        + " Quantity: " + thingy.Value.quantity);
                Console.ReadLine();

            }
        }
 private void simulateWork(StockController stockController, TimeSpan workDay)
 {
     Random rand = new Random();
     DateTime start = DateTime.Now;
     while  (DateTime.Now - start < workDay)
     {
         Thread.Sleep(rand.Next(100));
         bool buy = (rand.Next(6) == 0);
         // string itemName =
         //   if (buy)
         if (true)
         {
             int quantity = rand.Next(9) + 1;
             var thing = new ConcurrentCollections.Thing()
             {
                 ID = 3333,
                 name = "UnitTestThing3"
                 //price = 33.33,
                 //quantity = quantity
             };
             stockController.BuyThing(thing, quantity, "UnitTestThing3", ref _testThings);
         }
     }
 }