#36697: black need to be installed to launch the full test suite and it's not in
the requirements
-------------------------------------+-------------------------------------
Reporter: Pierre Sassoulas | Type:
| Cleanup/optimization
Status: new | Component:
| Uncategorized
Version: 5.2 | Severity: Normal
Keywords: tests, black | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
When first starting to contribute to django, 205 test errors out (FAILED
(errors=205, skipped=1827, expected failures=5)
) with the following stacktrace:
```
ERROR: test_makemessages_no_settings
(i18n.test_extraction.NoSettingsExtractionTests.test_makemessages_no_settings)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/pierre/.local/share/uv/python/cpython-3.13.1-linux-
x86_64-gnu/lib/python3.13/unittest/case.py", line 58, in testPartExecutor
yield
File "/home/pierre/.local/share/uv/python/cpython-3.13.1-linux-
x86_64-gnu/lib/python3.13/unittest/case.py", line 651, in run
self._callTestMethod(testMethod)
File "/home/pierre/.local/share/uv/python/cpython-3.13.1-linux-
x86_64-gnu/lib/python3.13/unittest/case.py", line 606, in _callTestMethod
if method() is not None:
^^^^^^^^^^^^^^^
File "/home/pierre/git/django/tests/i18n/test_extraction.py", line 1131,
in test_makemessages_no_settings
out, err = self.run_django_admin(["makemessages", "-l", "en", "-v",
"0"])
^^^^^^^^^^^^^^^
File "/home/pierre/git/django/tests/admin_scripts/tests.py", line 167,
in run_django_admin
return self.run_test(
^^^^^^^^^^^^^^^
File "/home/pierre/git/django/tests/admin_scripts/tests.py", line 152,
in run_test
test_environ["PATH"] = self.path_without_formatters
^^^^^^^^^^^
File "/home/pierre/git/django/django/utils/functional.py", line 47, in
__get__
res = instance.__dict__[self.name] = self.func(instance)
^^^^^^^^^^^^^^^
File "/home/pierre/git/django/tests/admin_scripts/tests.py", line 123,
in path_without_formatters
if os.path.commonpath([path_component, formatter_path]) == os.sep
^^^^^^^
File "<frozen posixpath>", line 536, in commonpath
TypeError: expected str, bytes or os.PathLike object, not NoneType
```
When find_formatters return a black_path that is None
(shutil.which("black") is None, meaning black is not installed).
I suggest raising a better error message by catching this in
find_formatters directly and/or adding black to tests/requirements/py3.py.
--
Ticket URL: <https://code.djangoproject.com/ticket/36697>
Django <https://code.djangoproject.com/>
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