Bad and misleading test

从 test_not_main_thread.py 开始，查看引入它的 pull request 和 commit。运行测试，以确认 collection 是否在任何 assertion 之前就失败，然后确定预期的 timeout 行为，并让测试检验该行为。当测试不再仅仅因为缺少 pytest_timeout.timeout_setup 而通过或失败时，即表示完成。

I believe there's a test that is not testing anything anymore.
The test was introduced in https://github.com/pytest-dev/pytest-timeout/pull/88, https://github.com/pytest-dev/pytest-timeout/commit/1a35f94298c1260500907bd674b75cf59df0c949

================================================================================================ test session starts ================================================================================================
platform linux -- Python 3.10.2, pytest-7.4.3, pluggy-1.3.0
rootdir: /tmp/pytest-of-vampas/pytest-4/test_not_main_thread0
plugins: github-actions-annotate-failures-0.2.0, timeout-2.2.0, cov-4.1.0
timeout: 1.0s
timeout method: signal
timeout func_only: False
collected 0 items / 1 error
====================================================================================================== ERRORS =======================================================================================================
_____________________________________________________________________________________ ERROR collecting test_not_main_thread.py ______________________________________________________________________________________
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/runner.py:341: in from_call
    result: Optional[TResult] = func()
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/runner.py:372: in <lambda>
    call = CallInfo.from_call(lambda: list(collector.collect()), "collect")
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/python.py:531: in collect
    self._inject_setup_module_fixture()
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/python.py:545: in _inject_setup_module_fixture
    self.obj, ("setUpModule", "setup_module")
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/python.py:310: in obj
    self._obj = obj = self._getobj()
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/python.py:528: in _getobj
    return self._importtestmodule()
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/python.py:617: in _importtestmodule
    mod = import_path(self.path, mode=importmode, root=self.config.rootpath)
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/pathlib.py:567: in import_path
    importlib.import_module(module_name)
/home/vampas/.pyenv/versions/3.10.2/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
<frozen importlib._bootstrap>:1050: in _gcd_import
    ???
<frozen importlib._bootstrap>:1027: in _find_and_load
    ???
<frozen importlib._bootstrap>:1006: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:688: in _load_unlocked
    ???
/home/vampas/projects/SaltStack/pytest/timeout/hotfix/settings-hook/.tox/py310/lib/python3.10/site-packages/_pytest/assertion/rewrite.py:186: in exec_module
    exec(co, module.__dict__)
test_not_main_thread.py:4: in <module>
    current_timeout_setup = pytest_timeout.timeout_setup
E   AttributeError: module 'pytest_timeout' has no attribute 'timeout_setup'
============================================================================================== short test summary info ==============================================================================================
ERROR test_not_main_thread.py - AttributeError: module 'pytest_timeout' has no attribute 'timeout_setup'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
================================================================================================= 1 error in 0.20s ==================================================================================================

Is this really what is getting tested? The error?