def test_add_possible_value(self): cell = Cell(0, 0, 1) self.assertEqual(0, len(cell.possible_values)) cell.add_possible_value(1) cell.add_possible_value(2) self.assertEqual(2, len(cell.possible_values))
def test_cannot_add_duplicate_possible_value(self): cell = Cell(0,0,1) self.assertEqual(0, len(cell.possible_values)) cell.add_possible_value(1) cell.add_possible_value(1) self.assertEqual(1, len(cell.possible_values))