public void CellWithOneNeighbourDiesAfterATick()
{
var world = new World();
world.SetLiveCellAt(new Location(1, 1));
world.SetLiveCellAt(new Location(1, 2));
World nextWorld = world.Tick();
Assert.IsInstanceOfType(typeof(DeadCell), nextWorld.GetCellAt(new Location(1, 2)));
}
public void DeadCellWithExactlyThreeLivingNeighboursBecomesALiveCellAfterATick()
{
var world = new World();
world.SetLiveCellAt(new Location(1, 0)); // -x-
world.SetLiveCellAt(new Location(0, 1)); // xo-
world.SetLiveCellAt(new Location(1, 2)); // -x-
World nextWorld = world.Tick();
Assert.IsInstanceOfType(typeof(AliveCell), nextWorld.GetCellAt(new Location(1, 1)));
}
public void CellWithTwoNeighboursShouldLiveOnAfterNextTick()
{
var world = new World();
world.SetLiveCellAt(new Location(1, 1));
world.SetLiveCellAt(new Location(1, 2));
world.SetLiveCellAt(new Location(2, 1));
World nextWorld = world.Tick();
Assert.IsInstanceOfType(typeof(AliveCell), nextWorld.GetCellAt(new Location(1, 1)));
}
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");
}
