def test_add_black_cell(self):
grid = Grid(9)
grid.add_black_cell(1, 5)
grid.add_black_cell(4, 9)
expected = [(1, 5), (4, 9), (6, 1), (9, 5)]
actual = grid.get_black_cells()
self.assertEqual(expected, actual)
def __init__(self, grid: Grid, *args, **kwargs):
super().__init__(grid.n, *args, **kwargs)
self.grid = grid
self.black_cells = grid.get_black_cells()
self.numbered_cells = grid.get_numbered_cells()
