public static void AbilityToGetATaskById_ThenTheCorrectTaskIsRetrieved() { var engine = new TaskEngine(); engine.SaveTask(new Task { Description = "Ability to login to the order system.", Id = "1" }); engine.SaveTask(new Task { Description = "Ability to logout of the order system.", Id = "2" }); var result = engine.RetrieveTaskById("2"); Assert.AreEqual(result.Description, "Ability to logout of the order system."); }