def test_validate_fail() -> None:
"""Validation function correctly fails on incomplete board"""
board_string = ('4.....8.5.3..........7......2.....6.....8.4......1.......'
'6.3.7.5..2.....1.4......')
board = SB.grid_values(board_string)
sbrd = SB()
solution = sbrd.reduce_puzzle(board)
valid = sbrd.validate(solution)
assert valid is False
def test_validate() -> None:
"""Validation function correctly validates complete board"""
board_string = ('..3.2.6..9..3.5..1..18.64....81.29..7.......8..67.82..'
'..26.95..8..2.3..9..5.1.3..')
board = SB.grid_values(board_string)
sbrd = SB()
solution = sbrd.reduce_puzzle(board)
valid = sbrd.validate(solution)
assert valid is True
