Hello, I have exactly the same issue.

In my case, using the ipytest library from Databricks clusters, this is the error that occurs when I try to run the tests:

EEEEE [100%]
============================================== ERRORS ==============================================
____________________________ ERROR at setup of test_simple_train_model _____________________________
file /root/.ipykernel/24539/command-4149222638982994-1805159126, line 3
def test_simple_train_model(model: BaseEstimator, data: tuple):
E fixture 'model' not found
> available fixtures: anyio_backend, anyio_backend_name, anyio_backend_options, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
> use 'pytest --fixtures [testpath]' for help on them.

/root/.ipykernel/24539/command-4149222638982994-1805159126:3
_______________________ ERROR at setup of test_plot_masive_confusion_matrix ________________________
file /root/.ipykernel/24539/command-4149222638982995-2606421544, line 3
def test_plot_masive_confusion_matrix(model: BaseEstimator, data: tuple):
E fixture 'model' not found
> available fixtures: anyio_backend, anyio_backend_name, anyio_backend_options, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
> use 'pytest --fixtures [testpath]' for help on them.

/root/.ipykernel/24539/command-4149222638982995-2606421544:3
______________________________ ERROR at setup of test_plot_roc_curve _______________________________
file /root/.ipykernel/24539/command-4149222638982996-3955143249, line 3
def test_plot_roc_curve(model: BaseEstimator, data: tuple):
E fixture 'model' not found
> available fixtures: anyio_backend, anyio_backend_name, anyio_backend_options, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
> use 'pytest --fixtures [testpath]' for help on them.

/root/.ipykernel/24539/command-4149222638982996-3955143249:3
___________________________ ERROR at setup of test_changeAdaptativeDtype ___________________________
file /root/.ipykernel/24539/command-4149222638982997-2293422769, line 3
def test_changeAdaptativeDtype(df_fixture: pd.DataFrame) -> pd.DataFrame:
E fixture 'df_fixture' not found
> available fixtures: anyio_backend, anyio_backend_name, anyio_backend_options, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
> use 'pytest --fixtures [testpath]' for help on them.

/root/.ipykernel/24539/command-4149222638982997-2293422769:3
__________________________ ERROR at setup of test_noisyVariableSuppressor __________________________
file /root/.ipykernel/24539/command-4149222638982998-15294889, line 3
def test_noisyVariableSuppressor(df_fixture: pd.DataFrame) -> pd.DataFrame:
E fixture 'df_fixture' not found
> available fixtures: anyio_backend, anyio_backend_name, anyio_backend_options, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory
> use 'pytest --fixtures [testpath]' for help on them.

/root/.ipykernel/24539/command-4149222638982998-15294889:3
========================================= warnings summary =========================================
../../local_disk0/.ephemeral_nfs/envs/pythonEnv-177398d8-2e8f-43fd-9db3-1d841e854457/lib/python3.10/site-packages/_pytest/config/ http://__init__.py:1277
/local_disk0/.ephemeral_nfs/envs/pythonEnv-177398d8-2e8f-43fd-9db3-1d841e854457/lib/python3.10/site-packages/_pytest/config/ http://__init__.py:1277 : PytestAssertRewriteWarning: Module already imported so cannot be rewritten: anyio
self._mark_plugins_for_rewrite(hook)

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
===================================== short test summary info ======================================
ERROR http://t_7524c4aa66964b16be82dde4f1f448d9.py ::test_simple_train_model
ERROR http://t_7524c4aa66964b16be82dde4f1f448d9.py ::test_plot_masive_confusion_matrix
ERROR http://t_7524c4aa66964b16be82dde4f1f448d9.py ::test_plot_roc_curve
ERROR http://t_7524c4aa66964b16be82dde4f1f448d9.py ::test_changeAdaptativeDtype
ERROR http://t_7524c4aa66964b16be82dde4f1f448d9.py ::test_noisyVariableSuppressor

And when I check the pytest fixtures log, I see that the directory is set to default by Databricks:

============================= test session starts ==============================
platform linux -- Python 3.10.12, pytest-8.3.3, pluggy-1.5.0
rootdir: /databricks/driver
plugins: anyio-3.5.0, typeguard-2.13.3
collected 0 items
cache -- .../_pytest/ http://cacheprovider.py:556
Return a cache object that can persist state between testing sessions.

capsysbinary -- .../_pytest/ http://capture.py:1006
Enable bytes capturing of writes to ``sys.stdout`` and ``sys.stderr``.

capfd -- .../_pytest/ http://capture.py:1034
Enable text capturing of writes to file descriptors ``1`` and ``2``.

capfdbinary -- .../_pytest/ http://capture.py:1062
Enable bytes capturing of writes to file descriptors ``1`` and ``2``.

capsys -- .../_pytest/ http://capture.py:978
Enable text capturing of writes to ``sys.stdout`` and ``sys.stderr``.

doctest_namespace [session scope] -- .../_pytest/ http://doctest.py:741
Fixture that returns a :py:class:`dict` that will be injected into the
namespace of doctests.

pytestconfig [session scope] -- .../_pytest/ http://fixtures.py:1345
Session-scoped fixture that returns the session's :class:`pytest.Config`
object.

record_property -- .../_pytest/ http://junitxml.py:280
Add extra properties to the calling test.

record_xml_attribute -- .../_pytest/ http://junitxml.py:303
Add extra xml attributes to the tag for the calling test.

record_testsuite_property [session scope] -- .../_pytest/ http://junitxml.py:341
Record a new ``<property>`` tag as child of the root ``<testsuite>``.

tmpdir_factory [session scope] -- .../_pytest/ http://legacypath.py:298
Return a :class:`pytest.TempdirFactory` instance for the test session.

tmpdir -- .../_pytest/ http://legacypath.py:305
Return a temporary directory path object which is unique to each test
function invocation, created as a sub directory of the base temporary
directory.

caplog -- .../_pytest/ http://logging.py:598
Access and control log capturing.

monkeypatch -- .../_pytest/ http://monkeypatch.py:31
A convenient fixture for monkey-patching.

recwarn -- .../_pytest/ http://recwarn.py:35
Return a :class:`WarningsRecorder` instance that records all warnings emitted by test functions.

tmp_path_factory [session scope] -- .../_pytest/ http://tmpdir.py:242
Return a :class:`pytest.TempPathFactory` instance for the test session.

tmp_path -- .../_pytest/ http://tmpdir.py:257
Return a temporary directory path object which is unique to each test
function invocation, created as a sub directory of the base temporary
directory.

------------------ fixtures defined from anyio.pytest_plugin -------------------
anyio_backend -- ../python/lib/python3.10/site-packages/anyio/ http://pytest_plugin.py:135
no docstring available

anyio_backend_name -- ../python/lib/python3.10/site-packages/anyio/ http://pytest_plugin.py:140
no docstring available

anyio_backend_options -- ../python/lib/python3.10/site-packages/anyio/ http://pytest_plugin.py:148
no docstring available

============================ no tests ran in 0.01s =============================

However, these tests work perfectly fine locally. I would really appreciate your support.