public void GetPreviousTick()
{
// Check cannot go back before the first tick
GameTick previousTick = _tick.GetPreviousTick();
Assert.AreEqual(_tick, previousTick);
// Advance and then come back
GameTick startingTick = _tick.GetNextTick().GetPreviousTick();
Assert.AreEqual(_time, startingTick.GetDate());
Assert.AreEqual(_tickNumber, startingTick.GetTick());
}
