public void TestMethod_AddDelete() { ITaskListManager c = new TaskListManager(); ToDoTask task = new ToDoTask() { ToDoListID = 1, ToDoTaskName = "My next task", SortOrder = 0 }; var addedTask = c.Add(task); var data = c.GetAll(); Assert.AreEqual(1, data.Count); //remove the item, then check c.Remove(addedTask.ToDoTaskID); data = c.GetAll(); Assert.AreEqual(0, data.Count); }