


"""simple docstring"""


from __future__ import annotations







def  __snake_case       (   UpperCamelCase__ ,			UpperCamelCase__	)      ->		list[tuple[int, int]]:







		"""simple docstring"""





		A       , A					       = position
		A					       = [
		    (y + 1, x + 2),
		    (y - 1, x + 2),
		    (y + 1, x - 2),
		    (y - 1, x - 2),
		    (y + 2, x + 1),
		    (y + 2, x - 1),
		    (y - 2, x + 1),
		    (y - 2, x - 1),
		]
		A					       = []

		for position in positions:
				A       , A					       = position
				if 0 <= y_test < n and 0 <= x_test < n:
						permissible_positions.append(UpperCamelCase__	)

		return permissible_positions







def  __snake_case       (   UpperCamelCase__	)      ->		bool:







		"""simple docstring"""





		return not any(elem == 0 for row in board for elem in row	)







def  __snake_case       (   UpperCamelCase__ ,			UpperCamelCase__ ,			UpperCamelCase__	)      ->		bool:







		"""simple docstring"""





		if is_complete(UpperCamelCase__	):
				return True

		for position in get_valid_pos(UpperCamelCase__ ,			len(UpperCamelCase__	)	):
				A       , A					       = position

				if board[y][x] == 0:
						A					       = curr + 1
						if open_knight_tour_helper(UpperCamelCase__ ,			UpperCamelCase__ ,			curr + 1	):
								return True
						A					       = 0

		return False







def  __snake_case       (   UpperCamelCase__	)      ->		list[list[int]]:







		"""simple docstring"""





		A					       = [[0 for i in range(UpperCamelCase__	)] for j in range(UpperCamelCase__	)]

		for i in range(UpperCamelCase__	):
				for j in range(UpperCamelCase__	):
						A					       = 1
						if open_knight_tour_helper(UpperCamelCase__ ,			(i, j) ,			1	):
								return board
						A					       = 0

		A					       = f'Open Kight Tour cannot be performed on a board of size {n}'
		raise ValueError(UpperCamelCase__	)


if __name__ == "__main__":
	import doctest

	doctest.testmod()









"""simple docstring"""


from unittest.mock import Mock, patch

from file_transfer.send_file import send_file







@patch('socket.socket'	)
@patch('builtins.open'	)
def  __snake_case       (   UpperCamelCase__ ,			UpperCamelCase__	)      ->		Dict:







		"""simple docstring"""





		A					       = Mock()
		A					       = conn, Mock()
		A					       = iter([1, None]	)
		A					       = lambda UpperCamelCase__	: next(UpperCamelCase__	)

		# ===== invoke =====
		send_file(filename='mytext.txt' ,			testing=UpperCamelCase__	)

		# ===== ensurance =====
		sock.assert_called_once()
		sock.return_value.bind.assert_called_once()
		sock.return_value.listen.assert_called_once()
		sock.return_value.accept.assert_called_once()
		conn.recv.assert_called_once()

		file.return_value.__enter__.assert_called_once()
		file.return_value.__enter__.return_value.read.assert_called()

		conn.send.assert_called_once()
		conn.close.assert_called_once()
		sock.return_value.shutdown.assert_called_once()
		sock.return_value.close.assert_called_once()





