Applabtoditesting.Tests.FakeDataService.Create C# (CSharp) Method

        public int Create(TodoItem todoItem)
        {
            _todoItems.Add (_idIterator, todoItem);
            _idIterator++;
            return _idIterator;
        }

 public void Adding_A_TodoItem_Should_Increase_Total_Todo_Items_With_One()
 {
     // Bruke _dataService til å finne count før save/add og sammenlign med ny count
     var dataService = new FakeDataService();
     var oldCount = dataService.GetAll ().Count ();
     dataService.Create (new TodoItem{ Title = "Test" });
     var newCount = dataService.GetAll ().Count ();
     Assert.AreEqual (oldCount + 1, newCount);
 }