public void When_the_hand_of_god_touches_a_dead_cell()
{
var cell_was_born = false;
var cell = Cell.ThatsDeadWithNeighbors(0);
cell.When_its_born = () => cell_was_born = true;
cell.Touched();
Assert.That(cell_was_born, "Touching a dead cell should bring it back to life.");
}
public void When_a_dead_cell_has_one_neighbors_and_a_moment_passes()
{
var cell = Cell.ThatsDeadWithNeighbors(1);
var cell_died = false;
cell.When_it_dies = () => cell_died = true;
cell.MomentPassed();
Assert.That(cell_died, Is.False, "It should not die when it's already dead.");
}
public void When_a_dead_cell_has_exactly_three_neighbors()
{
var dead_cell = Cell.ThatsDeadWithNeighbors(3);
var cell_was_born = false;
dead_cell.When_its_born = () => cell_was_born = true;
dead_cell.MomentPassed();
Assert.That(cell_was_born, "it should come to life");
}
public void When_a_dead_cell_has_exactly_three_neighbors_and_more_than_one_moment_passes()
{
var dead_cell = Cell.ThatsDeadWithNeighbors(3);
var number_of_times_born = 0;
dead_cell.When_its_born = () => number_of_times_born++;
dead_cell.MomentPassed();
dead_cell.MomentPassed();
Assert.That(number_of_times_born, Is.EqualTo(1), "it should be born only once.");
}
private void CreateDeadCellsWhereThereAreNoneSurrounding(KeyValuePair <Location, Cell> born_location)
{
var locations = born_location.Key.GetNeighboringLocations();
foreach (var location in locations)
{
if (!cell_locations.Exists(x => x.Key.Equals(location)))
{
var dead_cell = Cell.ThatsDeadWithNeighbors(0);
AddCellToWorld(location, dead_cell);
}
}
}
public void When_a_neighboring_cell_dies_without_knowing_of_any_neighbors()
{
var cell_born = false;
var cell = Cell.ThatsDeadWithNeighbors(0);
cell.When_its_born = () => cell_born = true;
cell.NeighborDied();
cell.NeighborWasBorn();
cell.NeighborWasBorn();
cell.NeighborWasBorn();
cell.MomentPassed();
Assert.That(cell_born, "it should count neighbors up from zero and not go into negatives.");
}
