Python 3.13 test regression in 3.10.0rc0 (compared to b1)

[mgorny]

Describe the bug

In 3.10.0rc0, the tests/test_web_urldispatcher.py::test_access_mock_special_resource is failing on Python 3.13.0b4.

The problem was introduced in 4f834b6 (CC @steverep). The previous version passes all tests on 3.13.

To Reproduce

In a venv, inside a directory with the git checkout:

# using pypi sdist is easier
pip install --pre aiohttp pytest-cov yarl
python -m pytest tests/test_web_urldispatcher.py::test_access_mock_special_resource

Expected behavior

Tests passing :-).

Logs/tracebacks

$ python -m pytest tests/test_web_urldispatcher.py::test_access_mock_special_resource
========================================================= test session starts =========================================================
platform linux -- Python 3.13.0b4, pytest-8.3.2, pluggy-1.5.0 -- /tmp/aiohttp/.venv/bin/python
cachedir: .pytest_cache
rootdir: /tmp/aiohttp
configfile: setup.cfg
plugins: cov-5.0.0
collected 1 item                                                                                                                      

tests/test_web_urldispatcher.py::test_access_mock_special_resource[pyloop] 
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/main.py", line 283, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>                          ~~~~^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/main.py", line 337, in _main
INTERNALERROR>     config.hook.pytest_runtestloop(session=session)
INTERNALERROR>     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_hooks.py", line 513, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>            ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 182, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>            ~~~~~~~~~~~~~~~~~~^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_result.py", line 100, in get_result
INTERNALERROR>     raise exc.with_traceback(exc.__traceback__)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 167, in _multicall
INTERNALERROR>     teardown.throw(outcome._exception)
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/logging.py", line 805, in pytest_runtestloop
INTERNALERROR>     return (yield)  # Run all the tests.
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 167, in _multicall
INTERNALERROR>     teardown.throw(outcome._exception)
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/terminal.py", line 673, in pytest_runtestloop
INTERNALERROR>     result = yield
INTERNALERROR>              ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 103, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/main.py", line 362, in pytest_runtestloop
INTERNALERROR>     item.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
INTERNALERROR>     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_hooks.py", line 513, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>            ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 139, in _multicall
INTERNALERROR>     raise exception.with_traceback(exception.__traceback__)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/warnings.py", line 112, in pytest_runtest_protocol
INTERNALERROR>     return (yield)
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/assertion/__init__.py", line 176, in pytest_runtest_protocol
INTERNALERROR>     return (yield)
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/unittest.py", line 429, in pytest_runtest_protocol
INTERNALERROR>     res = yield
INTERNALERROR>           ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/faulthandler.py", line 87, in pytest_runtest_protocol
INTERNALERROR>     return (yield)
INTERNALERROR>             ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 103, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/runner.py", line 113, in pytest_runtest_protocol
INTERNALERROR>     runtestprotocol(item, nextitem=nextitem)
INTERNALERROR>     ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/runner.py", line 132, in runtestprotocol
INTERNALERROR>     reports.append(call_and_report(item, "call", log))
INTERNALERROR>                    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/runner.py", line 244, in call_and_report
INTERNALERROR>     report: TestReport = ihook.pytest_runtest_makereport(item=item, call=call)
INTERNALERROR>                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_hooks.py", line 513, in __call__
INTERNALERROR>     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
INTERNALERROR>            ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_manager.py", line 120, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
INTERNALERROR>            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 139, in _multicall
INTERNALERROR>     raise exception.with_traceback(exception.__traceback__)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/tmpdir.py", line 318, in pytest_runtest_makereport
INTERNALERROR>     rep = yield
INTERNALERROR>           ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
INTERNALERROR>     teardown.throw(exception)  # type: ignore[union-attr]
INTERNALERROR>     ~~~~~~~~~~~~~~^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/skipping.py", line 269, in pytest_runtest_makereport
INTERNALERROR>     rep = yield
INTERNALERROR>           ^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 103, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/runner.py", line 368, in pytest_runtest_makereport
INTERNALERROR>     return TestReport.from_item_and_call(item, call)
INTERNALERROR>            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/reports.py", line 376, in from_item_and_call
INTERNALERROR>     longrepr = item.repr_failure(excinfo)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/python.py", line 1669, in repr_failure
INTERNALERROR>     return self._repr_failure_py(excinfo, style=style)
INTERNALERROR>            ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/nodes.py", line 456, in _repr_failure_py
INTERNALERROR>     return excinfo.getrepr(
INTERNALERROR>            ~~~~~~~~~~~~~~~^
INTERNALERROR>         funcargs=True,
INTERNALERROR>         ^^^^^^^^^^^^^^
INTERNALERROR>     ...<5 lines>...
INTERNALERROR>         truncate_args=truncate_args,
INTERNALERROR>         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR>     )
INTERNALERROR>     ^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/_code/code.py", line 690, in getrepr
INTERNALERROR>     return fmt.repr_excinfo(self)
INTERNALERROR>            ~~~~~~~~~~~~~~~~^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/_code/code.py", line 1058, in repr_excinfo
INTERNALERROR>     reprtraceback = self.repr_traceback(excinfo_)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/_code/code.py", line 971, in repr_traceback
INTERNALERROR>     traceback = self.tbfilter(excinfo)
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/python.py", line 1635, in _traceback_filter
INTERNALERROR>     path, firstlineno = code.path, code.firstlineno
INTERNALERROR>                         ^^^^^^^^^
INTERNALERROR>   File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/_code/code.py", line 97, in path
INTERNALERROR>     if not p.exists():
INTERNALERROR>            ~~~~~~~~^^
INTERNALERROR>   File "/usr/lib/python3.13/pathlib/_abc.py", line 450, in exists
INTERNALERROR>     self.stat(follow_symlinks=follow_symlinks)
INTERNALERROR>     ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
INTERNALERROR> TypeError: test_access_mock_special_resource.<locals>.mock_stat() got an unexpected keyword argument 'follow_symlinks'
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pytest/__main__.py", line 9, in <module>
    raise SystemExit(pytest.console_main())
                     ~~~~~~~~~~~~~~~~~~~^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/config/__init__.py", line 201, in console_main
    code = main()
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/config/__init__.py", line 175, in main
    ret: ExitCode | int = config.hook.pytest_cmdline_main(config=config)
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 139, in _multicall
    raise exception.with_traceback(exception.__traceback__)
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/main.py", line 330, in pytest_cmdline_main
    return wrap_session(config, _main)
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/main.py", line 318, in wrap_session
    config.hook.pytest_sessionfinish(
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        session=session, exitstatus=session.exitstatus
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
           ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 139, in _multicall
    raise exception.with_traceback(exception.__traceback__)
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
    teardown.throw(exception)  # type: ignore[union-attr]
    ~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/logging.py", line 870, in pytest_sessionfinish
    return (yield)
            ^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
    teardown.throw(exception)  # type: ignore[union-attr]
    ~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/terminal.py", line 893, in pytest_sessionfinish
    result = yield
             ^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 122, in _multicall
    teardown.throw(exception)  # type: ignore[union-attr]
    ~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/warnings.py", line 141, in pytest_sessionfinish
    return (yield)
            ^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/cacheprovider.py", line 477, in pytest_sessionfinish
    config.cache.set("cache/nodeids", sorted(self.cached_nodeids))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/cacheprovider.py", line 184, in set
    self._mkdir(path.parent)
    ~~~~~~~~~~~^^^^^^^^^^^^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/cacheprovider.py", line 126, in _mkdir
    self._ensure_cache_dir_and_supporting_files()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/cacheprovider.py", line 205, in _ensure_cache_dir_and_supporting_files
    if self._cachedir.is_dir():
       ~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/pathlib/_abc.py", line 465, in is_dir
    return S_ISDIR(self.stat(follow_symlinks=follow_symlinks).st_mode)
                   ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: test_access_mock_special_resource.<locals>.mock_stat() got an unexpected keyword argument 'follow_symlinks'
Exception ignored in atexit callback <function cleanup_numbered_dir at 0x7f9c06ad6d40>:
Traceback (most recent call last):
  File "/tmp/aiohttp/.venv/lib/python3.13/site-packages/_pytest/pathlib.py", line 362, in cleanup_numbered_dir
    if not root.exists():
  File "/usr/lib/python3.13/pathlib/_abc.py", line 450, in exists
    self.stat(follow_symlinks=follow_symlinks)
TypeError: test_access_mock_special_resource.<locals>.mock_stat() got an unexpected keyword argument 'follow_symlinks'

Python Version

$ python --version
Python 3.13.0b4

aiohttp Version

$ python -m pip show aiohttp
Name: aiohttp
Version: 3.10.0rc0
Summary: Async http client/server framework (asyncio)
Home-page: https://github.com/aio-libs/aiohttp
Author: 
Author-email: 
License: Apache 2
Location: /tmp/aiohttp/.venv/lib/python3.13/site-packages
Requires: aiohappyeyeballs, aiosignal, attrs, frozenlist, multidict, yarl
Required-by:

multidict Version

$ python -m pip show multidict
Name: multidict
Version: 6.0.5
Summary: multidict implementation
Home-page: https://github.com/aio-libs/multidict
Author: Andrew Svetlov
Author-email: andrew.svetlov@gmail.com
License: Apache 2
Location: /tmp/aiohttp/.venv/lib/python3.13/site-packages
Requires: 
Required-by: aiohttp, yarl

yarl Version

$ python -m pip show yarl
Name: yarl
Version: 1.9.4
Summary: Yet another URL library
Home-page: https://github.com/aio-libs/yarl
Author: Andrew Svetlov
Author-email: andrew.svetlov@gmail.com
License: Apache-2.0
Location: /tmp/aiohttp/.venv/lib/python3.13/site-packages
Requires: idna, multidict
Required-by: aiohttp

OS

Gentoo Linux amd64

Related component

Server, Client

Additional context

No response

Code of Conduct

• I agree to follow the aio-libs Code of Conduct

[bdraco]

Thanks for reporting.

It looks like a mocking problem as follow_symlinks is new in python 3.13 and the mock_stat doesn't accept the kwarg tests/test_web_urldispatcher.py: def mock_stat(self: pathlib.Path) -> os.stat_result:

It doesn't look urgent to fix, as it won't affect production code, but something we do need to handle before 3.13 goes stable.

Steve is on holiday right now so it will likely get fixed next week when he returns. Ideally the fix would get included in 3.10.1 with #8546 and any other fixups needed from 3.10.0 feedback

[mgorny]

I can submit a PR if that helps. I'm thinking it should be sufficient to add the optional kwarg here — since it's a mock purely for testing, I don't think we really need to handle or pass the value through.

[bdraco]

Steve let me know he was going to take care of it over the weekend. Its very unlikely we would do .1 before next week unless there is something that needs to be addressed right away in .0

[mgorny]

Hmm, there's another regression if I skip this test:

$ python -m pytest tests/test_web_urldispatcher.py::test_access_symlink_loop
========================================================= test session starts =========================================================
platform linux -- Python 3.13.0b4, pytest-8.3.2, pluggy-1.5.0 -- /tmp/aiohttp/.venv/bin/python
cachedir: .pytest_cache
rootdir: /tmp/aiohttp
configfile: setup.cfg
plugins: cov-5.0.0
collected 1 item                                                                                                                      

tests/test_web_urldispatcher.py::test_access_symlink_loop[pyloop] FAILED                                                        [100%]

============================================================== FAILURES ===============================================================
__________________________________________________ test_access_symlink_loop[pyloop] ___________________________________________________

tmp_path = PosixPath('/tmp/pytest-of-mgorny/pytest-12/test_access_symlink_loop_pyloo0')
aiohttp_client = <function aiohttp_client.<locals>.go at 0x7f09ac327740>

    async def test_access_symlink_loop(
        tmp_path: pathlib.Path, aiohttp_client: AiohttpClient
    ) -> None:
        # Tests the access to a looped symlink, which could not be resolved.
        my_dir_path = tmp_path / "my_symlink"
        pathlib.Path(str(my_dir_path)).symlink_to(str(my_dir_path), True)
    
        app = web.Application()
    
        # Register global static route:
        app.router.add_static("/", str(tmp_path), show_index=True)
        client = await aiohttp_client(app)
    
        # Request the root of the static directory.
>       r = await client.get("/" + my_dir_path.name)

aiohttp_client = <function aiohttp_client.<locals>.go at 0x7f09ac327740>
app        = <Application 0x7f09ac7d0250>
client     = <aiohttp.test_utils.TestClient object at 0x7f09ac781fd0>
my_dir_path = PosixPath('/tmp/pytest-of-mgorny/pytest-12/test_access_symlink_loop_pyloo0/my_symlink')
tmp_path   = PosixPath('/tmp/pytest-of-mgorny/pytest-12/test_access_symlink_loop_pyloo0')

tests/test_web_urldispatcher.py:513: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
aiohttp/test_utils.py:309: in _request
    resp = await self._session.request(method, self.make_url(path), **kwargs)
        kwargs     = {}
        method     = 'GET'
        path       = '/my_symlink'
        self       = <aiohttp.test_utils.TestClient object at 0x7f09ac781fd0>
aiohttp/client.py:616: in _request
    await resp.start(conn)
        all_cookies = <SimpleCookie: >
        allow_redirects = True
        auth       = None
        auth_from_url = None
        auto_decompress = True
        chunked    = None
        compress   = None
        conn       = Connection<ConnectionKey(host='127.0.0.1', port=33655, is_ssl=False, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>
        cookies    = None
        data       = None
        expect100  = False
        handle     = None
        headers    = <CIMultiDict()>
        history    = []
        json       = None
        max_field_size = 8190
        max_line_size = 8190
        max_redirects = 10
        method     = 'GET'
        params     = {}
        proxy      = None
        proxy_auth = None
        proxy_headers = <CIMultiDict()>
        raise_for_status = None
        read_bufsize = 65536
        read_until_eof = True
        real_timeout = ClientTimeout(total=300, connect=None, sock_read=None, sock_connect=None, ceil_threshold=5)
        redirects  = 0
        req        = <aiohttp.client_reqrep.ClientRequest object at 0x7f09ac7a79d0>
        resp       = <ClientResponse(http://127.0.0.1:33655/my_symlink) [None None]>
None

        retry_persistent_connection = False
        self       = <aiohttp.client.ClientSession object at 0x7f09ac31e880>
        server_hostname = None
        skip_auto_headers = None
        skip_headers = set()
        ssl        = True
        str_or_url = URL('http://127.0.0.1:33655/my_symlink')
        timeout    = <_SENTINEL.sentinel: 1>
        timer      = <aiohttp.helpers.TimerContext object at 0x7f09ac782f90>
        tm         = <aiohttp.helpers.TimeoutHandle object at 0x7f09ac782e40>
        trace_request_ctx = None
        traces     = []
        url        = URL('http://127.0.0.1:33655/my_symlink')
        version    = HttpVersion(major=1, minor=1)
aiohttp/client_reqrep.py:926: in start
    message, payload = await protocol.read()  # type: ignore[union-attr]
        connection = Connection<ConnectionKey(host='127.0.0.1', port=33655, is_ssl=False, ssl=True, proxy=None, proxy_auth=None, proxy_headers_hash=None)>
        protocol   = <aiohttp.client_proto.ResponseHandler object at 0x7f09ac482ff0>
        self       = <ClientResponse(http://127.0.0.1:33655/my_symlink) [None None]>
None

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <aiohttp.client_proto.ResponseHandler object at 0x7f09ac482ff0>

    async def read(self) -> _SizedT:
        if not self._buffer and not self._eof:
            assert not self._waiter
            self._waiter = self._loop.create_future()
            try:
>               await self._waiter
E               aiohttp.client_exceptions.ServerDisconnectedError: Server disconnected

self       = <aiohttp.client_proto.ResponseHandler object at 0x7f09ac482ff0>

aiohttp/streams.py:626: ServerDisconnectedError
---------------------------------------------------------- Captured log call ----------------------------------------------------------
ERROR    aiohttp.server:web_protocol.py:442 Unhandled exception
Traceback (most recent call last):
  File "/tmp/aiohttp/aiohttp/web_protocol.py", line 545, in start
    resp, reset = await task
                  ^^^^^^^^^^
  File "/tmp/aiohttp/aiohttp/web_protocol.py", line 491, in _handle_request
    reset = await self.finish_response(request, resp, start_time)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/aiohttp/web_protocol.py", line 647, in finish_response
    await prepare_meth(request)
  File "/tmp/aiohttp/aiohttp/web_fileresponse.py", line 188, in prepare
    file_path, st, file_encoding = await loop.run_in_executor(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
        None, self._get_file_path_stat_encoding, accept_encoding
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/python3.13/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/tmp/aiohttp/aiohttp/web_fileresponse.py", line 180, in _get_file_path_stat_encoding
    return file_path, file_path.stat(), None
                      ~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/pathlib/_local.py", line 515, in stat
    return os.stat(self, follow_symlinks=follow_symlinks)
           ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: [Errno 40] Too many levels of symbolic links: '/tmp/pytest-of-mgorny/pytest-12/test_access_symlink_loop_pyloo0/my_symlink'
ERROR    aiohttp.server:web_protocol.py:442 Unhandled exception
Traceback (most recent call last):
  File "/tmp/aiohttp/aiohttp/web_protocol.py", line 545, in start
    resp, reset = await task
                  ^^^^^^^^^^
  File "/tmp/aiohttp/aiohttp/web_protocol.py", line 491, in _handle_request
    reset = await self.finish_response(request, resp, start_time)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/aiohttp/aiohttp/web_protocol.py", line 647, in finish_response
    await prepare_meth(request)
  File "/tmp/aiohttp/aiohttp/web_fileresponse.py", line 188, in prepare
    file_path, st, file_encoding = await loop.run_in_executor(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
        None, self._get_file_path_stat_encoding, accept_encoding
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/python3.13/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/tmp/aiohttp/aiohttp/web_fileresponse.py", line 180, in _get_file_path_stat_encoding
    return file_path, file_path.stat(), None
                      ~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/pathlib/_local.py", line 515, in stat
    return os.stat(self, follow_symlinks=follow_symlinks)
           ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: [Errno 40] Too many levels of symbolic links: '/tmp/pytest-of-mgorny/pytest-12/test_access_symlink_loop_pyloo0/my_symlink'

----------- coverage: platform linux, python 3.13.0-beta-4 -----------
Name                                     Stmts   Miss Branch BrPart  Cover
--------------------------------------------------------------------------
aiohttp/__init__.py                         26     10      2      0    57%
aiohttp/abc.py                              97      2     66      0    99%
aiohttp/base_protocol.py                    67     36     24      3    40%
aiohttp/client.py                          530    251    234     43    47%
aiohttp/client_exceptions.py               138     55     36      1    61%
aiohttp/client_proto.py                    170     80     68     11    46%
aiohttp/client_reqrep.py                   657    299    328     59    48%
aiohttp/client_ws.py                       220    172     84      1    20%
aiohttp/compression_utils.py                70     37     22      0    42%
aiohttp/connector.py                       700    407    329     45    36%
aiohttp/cookiejar.py                       254    187    128      3    19%
aiohttp/formdata.py                         86     69     40      0    15%
aiohttp/hdrs.py                             90      0      0      0   100%
aiohttp/helpers.py                         558    299    231     21    39%
aiohttp/http.py                              8      0      0      0   100%
aiohttp/http_exceptions.py                  50     20      4      0    56%
aiohttp/http_parser.py                     490    273    208     33    37%
aiohttp/http_websocket.py                  381    288    152      0    18%
aiohttp/http_writer.py                     118     40     54     14    57%
aiohttp/locks.py                            24     16      4      0    29%
aiohttp/log.py                               7      0      0      0   100%
aiohttp/multipart.py                       608    501    272      0    14%
aiohttp/payload.py                         220    108     74      1    47%
aiohttp/pytest_plugin.py                   159     65     70      8    59%
aiohttp/resolver.py                         63     42     18      0    26%
aiohttp/streams.py                         395    292    140      2    20%
aiohttp/tcp_helpers.py                      19      2      8      3    81%
aiohttp/test_utils.py                      301    117     78     15    58%
aiohttp/tracing.py                         191     69     64      0    73%
aiohttp/typedefs.py                         23      0      0      0   100%
aiohttp/web.py                             121     84     52      0    23%
aiohttp/web_app.py                         247     84     93     19    63%
aiohttp/web_exceptions.py                  214     37     42      6    80%
aiohttp/web_fileresponse.py                161    109     52      2    29%
aiohttp/web_log.py                         102     39     40      0    64%
aiohttp/web_middlewares.py                  54     38     22      0    21%
aiohttp/web_protocol.py                    355    166    157     26    43%
aiohttp/web_request.py                     450    267    210      7    41%
aiohttp/web_response.py                    439    309    240      2    27%
aiohttp/web_routedef.py                    104     44     18      2    57%
aiohttp/web_runner.py                      221     71     70     12    67%
aiohttp/web_server.py                       45      8     14      4    80%
aiohttp/web_urldispatcher.py               723    354    235     20    50%
aiohttp/web_ws.py                          341    273    130      1    17%
aiohttp/worker.py                          123    123     32      0     0%
tests/conftest.py                          130     74     59      0    48%
tests/test_base_protocol.py                198    198      8      0     0%
tests/test_circular_imports.py              29     29     13      0     0%
tests/test_classbasedview.py                39     39      4      0     0%
tests/test_client_connection.py             93     93     12      0     0%
tests/test_client_exceptions.py            180    180     14      0     0%
tests/test_client_fingerprint.py            24     24      4      0     0%
tests/test_client_functional.py           2399   2399    456      0     0%
tests/test_client_proto.py                 100    100      0      0     0%
tests/test_client_request.py               759    759    108      0     0%
tests/test_client_response.py              461    461     36      0     0%
tests/test_client_session.py               492    492     97      0     0%
tests/test_client_ws.py                    468    468    154      0     0%
tests/test_client_ws_functional.py         673    673     54      0     0%
tests/test_connector.py                   1653   1653    218      0     0%
tests/test_cookiejar.py                    358    358     52      0     0%
tests/test_flowcontrol_streams.py          101    101      6      0     0%
tests/test_formdata.py                      77     77     24      0     0%
tests/test_helpers.py                      541    541    162      0     0%
tests/test_http_exceptions.py              109    109     10      0     0%
tests/test_http_parser.py                 1053   1053    208      0     0%
tests/test_http_writer.py                  183    183     14      0     0%
tests/test_imports.py                       34     34     12      0     0%
tests/test_locks.py                         40     40      4      0     0%
tests/test_loop.py                          36     36      4      0     0%
tests/test_multipart.py                    759    759    220      0     0%
tests/test_multipart_helpers.py            446    446     82      0     0%
tests/test_payload.py                       77     77      8      0     0%
tests/test_proxy.py                        299    299     92      0     0%
tests/test_proxy_functional.py             456    456    106      0     0%
tests/test_pytest_plugin.py                 47     47      2      0     0%
tests/test_resolver.py                     179    179     52      0     0%
tests/test_route_def.py                    211    211     26      0     0%
tests/test_run_app.py                      554    554    100      0     0%
tests/test_streams.py                     1058   1058    128      0     0%
tests/test_tcp_helpers.py                   52     52     14      0     0%
tests/test_test_utils.py                   230    230     54      0     0%
tests/test_tracing.py                       49     49      2      0     0%
tests/test_urldispatch.py                  859    859     98      0     0%
tests/test_web_app.py                      381    381     30      0     0%
tests/test_web_cli.py                       76     76     20      0     0%
tests/test_web_exceptions.py               274    274     42      0     0%
tests/test_web_functional.py              1487   1487    152      0     0%
tests/test_web_log.py                      143    143     12      0     0%
tests/test_web_middleware.py               230    230     26      0     0%
tests/test_web_request.py                  543    543     40      0     0%
tests/test_web_request_handler.py           42     42      2      0     0%
tests/test_web_response.py                 813    813     78      0     0%
tests/test_web_runner.py                   175    175     36      0     0%
tests/test_web_sendfile.py                  85     85      0      0     0%
tests/test_web_sendfile_functional.py      656    656     70      0     0%
tests/test_web_server.py                   178    178     18      0     0%
tests/test_web_urldispatcher.py            468    406     78      0    17%
tests/test_web_websocket.py                383    383     68      0     0%
tests/test_web_websocket_functional.py     682    682     34      0     0%
tests/test_websocket_handshake.py          153    153     26      0     0%
tests/test_websocket_parser.py             293    293     44      0     0%
tests/test_websocket_writer.py              95     95     16      0     0%
tests/test_worker.py                       190    190     20      0     0%
--------------------------------------------------------------------------
TOTAL                                    33273  28478   7674    364    15%

======================================================== slowest 10 durations =========================================================
0.01s call     tests/test_web_urldispatcher.py::test_access_symlink_loop[pyloop]
0.01s teardown tests/test_web_urldispatcher.py::test_access_symlink_loop[pyloop]

(1 durations < 0.005s hidden.  Use -vv to show these durations.)
======================================================= short test summary info =======================================================
FAILED tests/test_web_urldispatcher.py::test_access_symlink_loop[pyloop] - aiohttp.client_exceptions.ServerDisconnectedError: Server disconnected
========================================================== 1 failed in 2.99s ==========================================================

Should I report a separate bug or is it ok to handle it here? FWICS this one affects runtime too.

[bdraco]

Since this one is about the test, a separate issue for the runtime one would be preferred so we don't forget to fix both.

[mgorny]

Since this one is about the test, a separate issue for the runtime one would be preferred so we don't forget to fix both.

#8565 now.

[bdraco]

Moving to 3.10.2 since 3.13 isn't released yet and we don't have the ability to test it in the CI yet