


"""simple docstring"""


from __future__ import annotations

from collections.abc import Iterator
from typing import Any



class 			lowerCamelCase__						:







						def __init__(							self   :    List[str]			,			_lowercase   :    Any		):
								A					       = data
								A					       = None



class 			lowerCamelCase__						:







						def __init__(							self   :    Any		):
								A					       = None
								A					       = None







						def __iter__(							self   :    int		):
								A					       = self.head
								while self.head:
										yield node.data
										A					       = node.next
										if node == self.head:
												break







						def __len__(							self   :    List[str]		):
								return sum(1 for _ in self		)







						def __repr__(							self   :    Any		):
								return "->".join(str(_lowercase		) for item in iter(self		)		)







						def __a						(							self   :    Any			,			_lowercase   :    Any		):
								self.insert_nth(len(self		)			,			_lowercase		)







						def __a						(							self   :    List[Any]			,			_lowercase   :    Any		):
								self.insert_nth(0			,			_lowercase		)







						def __a						(							self   :    Any			,			_lowercase   :    int			,			_lowercase   :    Any		):
								if index < 0 or index > len(self		):
										raise IndexError('list index out of range.'		)
								A					       = Node(_lowercase		)
								if self.head is None:
										A					       = new_node  # first node points itself
										A					       = A					       = new_node
								elif index == 0:  # insert at head
										A					       = self.head
										A					       = A					       = new_node
								else:
										A					       = self.head
										for _ in range(index - 1		):
												A					       = temp.next
										A					       = temp.next
										A					       = new_node
										if index == len(self		) - 1:  # insert at tail
												A					       = new_node







						def __a						(							self   :    Any		):
								return self.delete_nth(0		)







						def __a						(							self   :    Union[str, Any]		):
								return self.delete_nth(len(self		) - 1		)







						def __a						(							self   :    str			,			_lowercase   :    int = 0		):
								if not 0 <= index < len(self		):
										raise IndexError('list index out of range.'		)
								A					       = self.head
								if self.head == self.tail:  # just one node
										A					       = A					       = None
								elif index == 0:  # delete head node
										A					       = self.tail.next.next
										A					       = self.head.next
								else:
										A					       = self.head
										for _ in range(index - 1		):
												A					       = temp.next
										A					       = temp.next
										A					       = temp.next.next
										if index == len(self		) - 1:  # delete at tail
												A					       = temp
								return delete_node.data







						def __a						(							self   :    Union[str, Any]		):
								return len(self		) == 0







def  __snake_case       (   )      ->		None:







		"""simple docstring"""





		A					       = CircularLinkedList()
		assert len(UpperCamelCase__	) == 0
		assert circular_linked_list.is_empty() is True
		assert str(UpperCamelCase__	) == ""

		try:
				circular_linked_list.delete_front()
				raise AssertionError  # This should not happen
		except IndexError:
				assert True  # This should happen

		try:
				circular_linked_list.delete_tail()
				raise AssertionError  # This should not happen
		except IndexError:
				assert True  # This should happen

		try:
				circular_linked_list.delete_nth(-1	)
				raise AssertionError
		except IndexError:
				assert True

		try:
				circular_linked_list.delete_nth(0	)
				raise AssertionError
		except IndexError:
				assert True

		assert circular_linked_list.is_empty() is True
		for i in range(5	):
				assert len(UpperCamelCase__	) == i
				circular_linked_list.insert_nth(UpperCamelCase__ ,			i + 1	)
		assert str(UpperCamelCase__	) == "->".join(str(UpperCamelCase__	) for i in range(1 ,			6	)	)

		circular_linked_list.insert_tail(6	)
		assert str(UpperCamelCase__	) == "->".join(str(UpperCamelCase__	) for i in range(1 ,			7	)	)
		circular_linked_list.insert_head(0	)
		assert str(UpperCamelCase__	) == "->".join(str(UpperCamelCase__	) for i in range(0 ,			7	)	)

		assert circular_linked_list.delete_front() == 0
		assert circular_linked_list.delete_tail() == 6
		assert str(UpperCamelCase__	) == "->".join(str(UpperCamelCase__	) for i in range(1 ,			6	)	)
		assert circular_linked_list.delete_nth(2	) == 3

		circular_linked_list.insert_nth(2 ,			3	)
		assert str(UpperCamelCase__	) == "->".join(str(UpperCamelCase__	) for i in range(1 ,			6	)	)

		assert circular_linked_list.is_empty() is False


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()





