def read(f: Union[IOBase, str],
board: sdk_board.Board = None) -> sdk_board.Board:
"""Read a Sudoku board from a file. Pass in a path
or an already opened file. Optionally pass in a board to be
filled.
"""
if isinstance(f, str):
log.debug("Reading from string")
f = open(f, "r")
else:
log.debug(f"Reading from file {f}")
if board is None:
board = sdk_board.Board()
values = []
for row in f:
row = row.strip()
log.debug(f"Reading row |{row}|")
values.append(row)
if len(row) != NROWS:
raise InputError("Puzzle row wrong length: {}"
.format(row))
log.debug(f"Read values: {values}")
if len(values) != NROWS:
raise InputError("Wrong number of rows in {}"
.format(values))
board.set_tiles(values)
f.close()
return board
def test_properties(self):
board = sdk_board.Board()
board.set_tiles(wikipedia_example)
self.assertTrue(board.is_consistent())
self.assertFalse(board.is_solved())
board.set_tiles(wikipedia_solved)
duplicate_reports = board.duplicates()
self.assertEqual(duplicate_reports, [])
self.assertTrue(board.is_consistent())
self.assertTrue(board.is_solved())
board.set_tiles(wikipedia_wrong)
self.assertFalse(board.is_solved())
self.assertFalse(board.is_consistent())
def test_constructor(self):
"""Constructor creates empty board"""
board = sdk_board.Board()
self.assertEqual(len(board.tiles), 9)
for row in board.tiles:
self.assertEqual(len(row), 9)
# Each tile should appear in 3 groups (row, column, block)
board.set_tiles(naked_single_example)
self.assertEqual(board.as_list(), naked_single_example)
three_count = 0
for group in board.groups:
for tile in group.tiles:
if tile.value == '3':
three_count += 1
self.assertEqual(three_count, 3)
def test_hidden_single(self):
board = sdk_board.Board()
board.set_tiles(hidden_single_example)
sdk_solver.propagate(board)
self.assertEqual(board.as_list(), hidden_single_propagated)