

from __future__ import annotations

from collections.abc import Iterator
from typing import Any



class 					_a		:


					'''simple docstring'''






					def __init__(				self					, A__    ):
						A__							:					Any       =	data
						A__							:					Node | None       =	None



class 					_a		:


					'''simple docstring'''






					def __init__(				self    ):
						A__							:					int       =	None
						A__							:					Tuple       =	None






					def __iter__(				self    ):
						A__							:					Optional[int]       =	self.head
						while self.head:
							yield node.data
							A__							:					List[Any]       =	node.next
							if node == self.head:
								break






					def __len__(				self    ):
						return sum(1 for _ in self    )






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






					def 						__A    (				self					, A__    ):
						self.insert_nth(len(self    )					, A__    )






					def 						__A    (				self					, A__    ):
						self.insert_nth(0					, A__    )






					def 						__A    (				self					, A__					, A__    ):
						if index < 0 or index > len(self    ):
							raise IndexError("""list index out of range."""    )
						A__							:					Union[str, Any]       =	Node(A__    )
						if self.head is None:
							A__							:					Optional[int]       =	new_node  # first node points itself
							A__							:					List[Any]       =	new_node
						elif index == 0:  # insert at head
							A__							:					Tuple       =	self.head
							A__							:					Tuple       =	new_node
						else:
							A__							:					str       =	self.head
							for _ in range(index - 1    ):
								A__							:					Optional[int]       =	temp.next
							A__							:					int       =	temp.next
							A__							:					int       =	new_node
							if index == len(self    ) - 1:  # insert at tail
								A__							:					int       =	new_node






					def 						__A    (				self    ):
						return self.delete_nth(0    )






					def 						__A    (				self    ):
						return self.delete_nth(len(self    ) - 1    )






					def 						__A    (				self					, A__ = 0    ):
						if not 0 <= index < len(self    ):
							raise IndexError("""list index out of range."""    )
						A__							:					Optional[Any]       =	self.head
						if self.head == self.tail:  # just one node
							A__							:					Optional[int]       =	None
						elif index == 0:  # delete head node
							A__							:					Dict       =	self.tail.next.next
							A__							:					Optional[Any]       =	self.head.next
						else:
							A__							:					List[str]       =	self.head
							for _ in range(index - 1    ):
								A__							:					List[str]       =	temp.next
							A__							:					Tuple       =	temp.next
							A__							:					List[Any]       =	temp.next.next
							if index == len(self    ) - 1:  # delete at tail
								A__							:					List[str]       =	temp
						return delete_node.data






					def 						__A    (				self    ):
						return len(self    ) == 0



def 		UpperCamelCase      ()  ->   None:
	A__							:					int       =	CircularLinkedList()
	assert len(lowercase_      ) == 0
	assert circular_linked_list.is_empty() is True
	assert str(lowercase_      ) == ""

	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(lowercase_      ) == i
		circular_linked_list.insert_nth(lowercase_					,   i + 1      )
	assert str(lowercase_      ) == "->".join(str(lowercase_      ) for i in range(1					,   6      )      )

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

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

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

	assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
	import doctest

	doctest.testmod()






# tests directory-specific settings - this file is run automatically
# by pytest before any tests are run

import doctest
import sys
import warnings
from os.path import abspath, dirname, join

import _pytest

from transformers.testing_utils import HfDoctestModule, HfDocTestParser


# allow having multiple repository checkouts and not needing to remember to rerun
# 'pip install -e .[dev]' when switching between checkouts and running tests.
A_ :				Optional[int]						 =    abspath(join(dirname(__file__), 'src'))
sys.path.insert(1, git_repo_path)

# silence FutureWarning warnings in tests since often we can't act on them until
# they become normal warnings - i.e. the tests still need to test the current functionality
warnings.simplefilter(action='ignore', category=FutureWarning)

def 		UpperCamelCase      (lowercase_:				List[str]      )  ->   Any:
	config.addinivalue_line(
	    """markers"""					,   """is_pt_tf_cross_test: mark test to run only when PT and TF interactions are tested"""      )
	config.addinivalue_line(
	    """markers"""					,   """is_pt_flax_cross_test: mark test to run only when PT and FLAX interactions are tested"""      )
	config.addinivalue_line("""markers"""					,   """is_pipeline_test: mark test to run only when pipelines are tested"""      )
	config.addinivalue_line("""markers"""					,   """is_staging_test: mark test to run only in the staging environment"""      )
	config.addinivalue_line("""markers"""					,   """accelerate_tests: mark test that require accelerate"""      )
	config.addinivalue_line("""markers"""					,   """tool_tests: mark the tool tests that are run on their specific schedule"""      )

def 		UpperCamelCase      (lowercase_:				Optional[int]      )  ->   Optional[Any]:
	from transformers.testing_utils import pytest_addoption_shared

	pytest_addoption_shared(lowercase_      )

def 		UpperCamelCase      (lowercase_:				List[str]      )  ->   Optional[Any]:
	from transformers.testing_utils import pytest_terminal_summary_main

	A__							:					List[Any]       =	terminalreporter.config.getoption("""--make-reports"""      )
	if make_reports:
		pytest_terminal_summary_main(lowercase_					,   id=lowercase_      )

def 		UpperCamelCase      (lowercase_:				Union[str, Any]					,   lowercase_:				int      )  ->   List[str]:
	# If no tests are collected, pytest exists with code 5, which makes the CI fail.
	if exitstatus == 5:
		A__							:					Tuple       =	0


# Doctest custom flag to ignore output.
A_ :				Tuple						 =    doctest.register_optionflag('IGNORE_RESULT')

A_ :				Dict						 =    doctest.OutputChecker



class 					_a		(__magic_name__       ):


					'''simple docstring'''






					def 						__A    (				self					, A__					, A__					, A__    ):
						if IGNORE_RESULT & optionflags:
							return True
						return OutputChecker.check_output(self					, A__					, A__					, A__    )



A_ :				str						 =    CustomOutputChecker
A_ :				Dict						 =    HfDoctestModule


A_ :				Optional[int]						 =    HfDocTestParser



