public void Dead_cell_with_3_neighbours_is_born()
{
// Arrange
var cell = new DeadCell();
// Act
var newCell = cell.Evolve(3);
// Assert
newCell.ShouldBeOfType <LivingCell>();
}
public void Dead_cell_with_2_neighbours_stays_dead()
{
// Arrange
var cell = new DeadCell();
// Act
var newCell = cell.Evolve(2);
// Assert
newCell.ShouldBeOfType <DeadCell>();
}