[Bug]: test decorator breaks with new pytest importlib mode

### Bug summary

pytest is failing on colletnig units.

### Code for reproduction

```python
I'm trying to package your module as an rpm package. So I'm using the typical build, install and test cycle used on building packages from non-root account.
- "setup.py build"
- "setup.py install --root </install/prefix>"
- "pytest --import-mode=importlib" with PYTHONPATH pointing to sitearch and sitelib inside </install/prefix>
```


### Actual outcome

```console
+ PYTHONPATH=/home/tkloczko/rpmbuild/BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages:/home/tkloczko/rpmbuild/BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib/python3.8/site-packages
+ xvfb-run -a /usr/bin/pytest -ra --import-mode=importlib
=========================================================================== test session starts ============================================================================
platform linux -- Python 3.8.12, pytest-6.2.5, py-1.11.0, pluggy-0.13.1
benchmark: 3.4.1 (defaults: timer=time.perf_counter disable_gc=False min_rounds=5 min_time=0.000005 max_time=1.0 calibration_precision=10 warmup=False warmup_iterations=100000)
Using --randomly-seed=2178151746
rootdir: /home/tkloczko/rpmbuild/BUILD/matplotlib-3.5.0, configfile: pytest.ini, testpaths: lib
plugins: shutil-1.7.0, virtualenv-1.7.0, mock-3.6.1, cov-2.12.1, anyio-3.3.4, forked-1.3.0, xdist-2.3.0, flaky-3.7.0, tornasync-0.6.0.post2, console-scripts-1.2.0, trio-0.7.0, timeout-2.0.1, asyncio-0.16.0, freezegun-0.4.2, flake8-1.0.7, pyfakefs-4.5.3, hypothesis-6.29.3, benchmark-3.4.1, profiling-1.7.0, datadir-1.3.1, regressions-2.2.0, randomly-3.8.0, rerunfailures-9.1.1, yagot-0.5.0, requests-mock-1.9.3, subtests-0.5.0, easy-server-0.8.0, django-4.5.2
collected 4599 items / 28 errors / 4571 selected

================================================================================== ERRORS ==================================================================================
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_artist.py ___________________________________________________________
lib/matplotlib/tests/test_artist.py:125: in <module>
    def test_clipping_zoom(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_artist'
____________________________________________________________ ERROR collecting lib/matplotlib/tests/test_axes.py ____________________________________________________________
lib/matplotlib/tests/test_axes.py:49: in <module>
    def test_label_loc_vertical(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_axes'
_______________________________________________________ ERROR collecting lib/matplotlib/tests/test_backend_cairo.py ________________________________________________________
lib/matplotlib/tests/test_backend_cairo.py:12: in <module>
    def test_patch_alpha_coloring(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_backend_cairo'
________________________________________________________ ERROR collecting lib/matplotlib/tests/test_backend_pdf.py _________________________________________________________
lib/matplotlib/tests/test_backend_pdf.py:317: in <module>
    def test_pdf_eps_savefig_when_color_is_none(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_backend_pdf'
________________________________________________________ ERROR collecting lib/matplotlib/tests/test_backend_pgf.py _________________________________________________________
lib/matplotlib/tests/test_backend_pgf.py:19: in <module>
    baseline_dir, result_dir = _image_directories(lambda: 'dummy func')
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_backend_pgf'
_________________________________________________________ ERROR collecting lib/matplotlib/tests/test_backend_ps.py _________________________________________________________
lib/matplotlib/tests/test_backend_ps.py:196: in <module>
    def test_text_clip(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_backend_ps'
________________________________________________________ ERROR collecting lib/matplotlib/tests/test_backend_svg.py _________________________________________________________
lib/matplotlib/tests/test_backend_svg.py:90: in <module>
    def test_rasterized(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_backend_svg'
__________________________________________________________ ERROR collecting lib/matplotlib/tests/test_category.py __________________________________________________________
lib/matplotlib/tests/test_category.py:287: in <module>
    def test_overriding_units_in_plot(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_category'
________________________________________________________ ERROR collecting lib/matplotlib/tests/test_collections.py _________________________________________________________
lib/matplotlib/tests/test_collections.py:309: in <module>
    def test_collection_log_datalim(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_collections'
__________________________________________________________ ERROR collecting lib/matplotlib/tests/test_colorbar.py __________________________________________________________
lib/matplotlib/tests/test_colorbar.py:764: in <module>
    def test_axes_handles_same_functions(fig_ref, fig_test):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_colorbar'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_colors.py ___________________________________________________________
lib/matplotlib/tests/test_colors.py:1464: in <module>
    def test_norm_update_figs(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_colors'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_figure.py ___________________________________________________________
lib/matplotlib/tests/test_figure.py:569: in <module>
    def test_add_artist(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_figure'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_image.py ____________________________________________________________
lib/matplotlib/tests/test_image.py:111: in <module>
    def test_imshow_antialiased(fig_test, fig_ref,
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_image'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_lines.py ____________________________________________________________
lib/matplotlib/tests/test_lines.py:137: in <module>
    def test_no_subslice_with_transform(fig_ref, fig_test):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_lines'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_marker.py ___________________________________________________________
lib/matplotlib/tests/test_marker.py:68: in <module>
    def test_poly_marker(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_marker'
__________________________________________________________ ERROR collecting lib/matplotlib/tests/test_mathtext.py __________________________________________________________
lib/matplotlib/tests/test_mathtext.py:310: in <module>
    def test_spaces(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_mathtext'
__________________________________________________________ ERROR collecting lib/matplotlib/tests/test_patches.py ___________________________________________________________
lib/matplotlib/tests/test_patches.py:82: in <module>
    def test_rotate_rect_draw(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_patches'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_polar.py ____________________________________________________________
lib/matplotlib/tests/test_polar.py:102: in <module>
    def test_polar_wrap(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_polar'
______________________________________________________ ERROR collecting lib/matplotlib/tests/test_preprocess_data.py _______________________________________________________
lib/matplotlib/tests/test_preprocess_data.py:266: in <module>
    class TestPlotTypes:
lib/matplotlib/tests/test_preprocess_data.py:272: in TestPlotTypes
    def test_dict_unpack(self, plotter, fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_preprocess_data'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_scale.py ____________________________________________________________
lib/matplotlib/tests/test_scale.py:17: in <module>
    def test_log_scales(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_scale'
_______________________________________________________ ERROR collecting lib/matplotlib/tests/test_simplification.py _______________________________________________________
lib/matplotlib/tests/test_simplification.py:250: in <module>
    def test_closed_path_nan_removal(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_simplification'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_spines.py ___________________________________________________________
lib/matplotlib/tests/test_spines.py:81: in <module>
    def test_spine_nonlinear_data_positions(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_spines'
__________________________________________________________ ERROR collecting lib/matplotlib/tests/test_testing.py ___________________________________________________________
lib/matplotlib/tests/test_testing.py:19: in <module>
    def test_parametrize_with_check_figure_equal(a, fig_ref, b, fig_test):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_testing'
____________________________________________________________ ERROR collecting lib/matplotlib/tests/test_text.py ____________________________________________________________
lib/matplotlib/tests/test_text.py:618: in <module>
    def test_annotation_units(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_text'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_units.py ____________________________________________________________
lib/matplotlib/tests/test_units.py:179: in <module>
    def test_subclass(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_units'
___________________________________________________________ ERROR collecting lib/matplotlib/tests/test_usetex.py ___________________________________________________________
lib/matplotlib/tests/test_usetex.py:42: in <module>
    def test_empty(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_usetex'
__________________________________________________________ ERROR collecting lib/matplotlib/tests/test_widgets.py ___________________________________________________________
lib/matplotlib/tests/test_widgets.py:1276: in <module>
    def test_rect_visibility(fig_test, fig_ref):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_widgets'
_________________________________________________________ ERROR collecting lib/mpl_toolkits/tests/test_mplot3d.py __________________________________________________________
lib/mpl_toolkits/tests/test_mplot3d.py:162: in <module>
    def test_contourf3d_extend(fig_test, fig_ref, extend, levels):
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:410: in decorator
    _, result_dir = _image_directories(func)
../../BUILDROOT/python-matplotlib-3.5.0-2.fc35.x86_64/usr/lib64/python3.8/site-packages/matplotlib/testing/decorators.py:482: in _image_directories
    module_path = Path(sys.modules[func.__module__].__file__)
E   KeyError: 'test_mplot3d'
========================================================================= short test summary info ==========================================================================
ERROR lib/matplotlib/tests/test_artist.py - KeyError: 'test_artist'
ERROR lib/matplotlib/tests/test_axes.py - KeyError: 'test_axes'
ERROR lib/matplotlib/tests/test_backend_cairo.py - KeyError: 'test_backend_cairo'
ERROR lib/matplotlib/tests/test_backend_pdf.py - KeyError: 'test_backend_pdf'
ERROR lib/matplotlib/tests/test_backend_pgf.py - KeyError: 'test_backend_pgf'
ERROR lib/matplotlib/tests/test_backend_ps.py - KeyError: 'test_backend_ps'
ERROR lib/matplotlib/tests/test_backend_svg.py - KeyError: 'test_backend_svg'
ERROR lib/matplotlib/tests/test_category.py - KeyError: 'test_category'
ERROR lib/matplotlib/tests/test_collections.py - KeyError: 'test_collections'
ERROR lib/matplotlib/tests/test_colorbar.py - KeyError: 'test_colorbar'
ERROR lib/matplotlib/tests/test_colors.py - KeyError: 'test_colors'
ERROR lib/matplotlib/tests/test_figure.py - KeyError: 'test_figure'
ERROR lib/matplotlib/tests/test_image.py - KeyError: 'test_image'
ERROR lib/matplotlib/tests/test_lines.py - KeyError: 'test_lines'
ERROR lib/matplotlib/tests/test_marker.py - KeyError: 'test_marker'
ERROR lib/matplotlib/tests/test_mathtext.py - KeyError: 'test_mathtext'
ERROR lib/matplotlib/tests/test_patches.py - KeyError: 'test_patches'
ERROR lib/matplotlib/tests/test_polar.py - KeyError: 'test_polar'
ERROR lib/matplotlib/tests/test_preprocess_data.py - KeyError: 'test_preprocess_data'
ERROR lib/matplotlib/tests/test_scale.py - KeyError: 'test_scale'
ERROR lib/matplotlib/tests/test_simplification.py - KeyError: 'test_simplification'
ERROR lib/matplotlib/tests/test_spines.py - KeyError: 'test_spines'
ERROR lib/matplotlib/tests/test_testing.py - KeyError: 'test_testing'
ERROR lib/matplotlib/tests/test_text.py - KeyError: 'test_text'
ERROR lib/matplotlib/tests/test_units.py - KeyError: 'test_units'
ERROR lib/matplotlib/tests/test_usetex.py - KeyError: 'test_usetex'
ERROR lib/matplotlib/tests/test_widgets.py - KeyError: 'test_widgets'
ERROR lib/mpl_toolkits/tests/test_mplot3d.py - KeyError: 'test_mplot3d'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 28 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
=========================================================================== 28 errors in 19.45s ============================================================================
```


### Expected outcome

pytets should be able at least collect units and start testing.

### Additional information

_No response_

### Operating system

Linux/x86_64

### Matplotlib Version

3.5.0

### Matplotlib Backend

_No response_

### Python version

3.8.12

### Jupyter version

_No response_

### Installation

from source (.tar.gz)

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Uh oh!

[Bug]: test decorator breaks with new pytest importlib mode #21885

Bug summary

Code for reproduction

Actual outcome

Expected outcome

Additional information

Operating system

Matplotlib Version

Matplotlib Backend

Python version

Jupyter version

Installation

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Uh oh!

[Bug]: test decorator breaks with new pytest importlib mode #21885

Description

Bug summary

Code for reproduction

Actual outcome

Expected outcome

Additional information

Operating system

Matplotlib Version

Matplotlib Backend

Python version

Jupyter version

Installation

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions