public void Test_AddItem_AddsItemToClass()
        {
            Item testItem = new Item("Sword", 0, "briefcase.jpg");
              testItem.Save();
              Class testClass = new Class("Knight");
              testClass.Save();

              testClass.AddItem(testItem);

              List<Item> testList = new List<Item>{testItem};
              List<Item> result = testClass.GetItems();

              Assert.Equal(testList, result);
        }
        public void Test_GetItems_ReturnsAllClassItems()
        {
            Class testClass = new Class("Knight");
              testClass.Save();
              Item testItem1 = new Item("Sword", 0, "briefcase.jpg");
              testItem1.Save();
              Item testItem2 = new Item("Shield", 0, "briefcase.jpg");
              testItem2.Save();

              testClass.AddItem(testItem1);
              testClass.AddItem(testItem2);

              List<Item> testList = new List<Item> {testItem1, testItem2};
              List<Item> result = testClass.GetItems();

              Assert.Equal(testList, result);
        }