public void EventManagerDeleteValidParameterShouldDeleteEvent()
        {
            var manager = new EventManager();

            manager.EventsList.Add(new Event("Test title1", "Location1", new DateTime(2014, 12, 31)));
            manager.DeleteEventsByTitle("Test title1");

            Assert.AreEqual(0, manager.EventsList.Count);
        }
 public void EventManagerDeleteEventsByTitleNullParameterShouldThrow()
 {
     var manager = new EventManager();
     manager.DeleteEventsByTitle(null);
 }