public void OnCellSteppedTest() { List <EventArgs> receivedEvents = new List <EventArgs>(); JailCell cell = new JailCell(1, 11, 1, 1, "Jail", "Jail"); cell.CellStepped += (object sender, EventArgs e) => receivedEvents.Add(e); cell.Step(); Assert.AreEqual(1, receivedEvents.Count); Assert.AreEqual(EventArgs.Empty, receivedEvents[0]); }