def test_value_poss_exclusive(self):
c = Cell(9, 0, 0, 4)
self.assertEqual(4, c.value())
self.assertEqual(-1, c.possible_count())
self.assertIsNone(c.possible_vals())
c = Cell(9, 0, 0, poss_vals=frozenset({2, 3, 4}))
self.assertIsNone(c.value())
self.assertEqual({2, 3, 4}, c.possible_vals())
self.assertEqual(3, c.possible_count())
def test_neither_set(self):
c = Cell(9, 0, 0)
self.assertIsNone(c.value())
self.assertIsNotNone(c.possible_vals())
self.assertEqual(9, c.possible_count())
for x in self.__test_maxes:
s = set(range(1, x + 1))
c = Cell(x, 0, 0)
self.assertEqual(s, c.possible_vals())
def test_possible_val_mod(self):
# Change the set returned by the possible val method, make sure it stays the same.
c = Cell(9, 0, 0, poss_vals=frozenset({2, 3, 4}))
ret_set = c.possible_vals()
ret_set.add(5)
self.assertEqual(4, len(ret_set))
self.assertEqual(3, len(c.possible_vals()))
self.assertEqual(3, c.possible_count())