def test_initial_value(self):
with self.assertRaises(ValueError):
Cell(9, 0, 0, is_initial=True)
with self.assertRaises(ValueError):
Cell(9, 0, 0, poss_vals=frozenset(), is_initial=True)
c = Cell(9, 0, 0, 1, is_initial=True)
self.assertTrue(c.is_initial())
c = Cell(9, 0, 0, 1)
self.assertFalse(c.is_initial())
def _clear_possible_action(board: Board, mod_cell: Cell, value: int):
if mod_cell.is_initial():
return
if mod_cell.value() is not None:
return
if mod_cell.has_possible_val(value):
new_cell = mod_cell.clear_possible_value(value)
board.set_cell(new_cell)