def test_modify_initial_cell(self):
c = Cell(9, 0, 0, 4, is_initial=True)
with self.assertRaises(ValueError):
c.set_possible_value(3)
with self.assertRaises(ValueError):
c.set_value(5)
with self.assertRaises(ValueError):
c.clear_value(6)
with self.assertRaises(ValueError):
c.clear_possible_value(2)
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)
def test_clear_possible_value(self):
c = Cell(9, 0, 0, poss_vals=frozenset({2, 3, 4}))
c2 = c
for i in range(1, 10):
c2 = c2.clear_possible_value(i)
self.assertEqual({2, 3, 4}, c.possible_vals())
self.assertEqual(set(), c2.possible_vals())
c2 = c.clear_possible_value(5)
self.assertEqual(c, c2)
c2 = c.clear_possible_value(4)
self.assertEqual({2, 3}, c2.possible_vals())
self.assertEqual({2, 3, 4}, c.possible_vals())
c = Cell(9, 0, 0, 4)