public void GetCellAtShouldOnlyReturnLivingCellsWhenSet()
{
var world = new World();
world.SetLiveCellAt(new Location(99, 99));
Assert.IsInstanceOfType(typeof(DeadCell), world.GetCellAt(new Location(1, 1)));
Assert.IsInstanceOfType(typeof(AliveCell), world.GetCellAt(new Location(99, 99)));
}
public void OneAliveCellShouldDieAfterATick()
{
var world = new World();
world.SetLiveCellAt(new Location(1,1));
Assert.IsAssignableFrom(typeof(AliveCell), world.GetCellAt(new Location(1, 1)), "before tick");
World nextWorld = world.Tick();
Assert.IsInstanceOfType(typeof(DeadCell), nextWorld.GetCellAt(new Location(1, 1)), "after tick");
}
