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[3.12] gh-122191: Fix test_warnings failure if run with -Werror (GH-122222) (GH-122257)

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__spec__.loader is now required in the module globals (see gh-86298).
(cherry picked from commit 9b4fe9b718)
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Serhiy Storchaka 2024-07-25 10:18:57 +03:00 • committed by GitHub
parent dd4c8aca61
commit be5e229aa6
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1 changed files with 23 additions and 13 deletions
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36
Lib/test/test_warnings/__init__.py
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@ -1,6 +1,7 @@
from contextlib import contextmanager
import linecache
import os
import importlib
from io import StringIO
import re
import sys
@ -858,37 +859,46 @@ class _WarningsTests(BaseTest, unittest.TestCase):
# warn_explicit() should neither raise a SystemError nor cause an
# assertion failure, in case the return value of get_source() has a
# bad splitlines() method.
def get_bad_loader(splitlines_ret_val):
get_source_called = []
def get_module_globals(*, splitlines_ret_val):
class BadSource(str):
def splitlines(self):
return splitlines_ret_val
class BadLoader:
def get_source(self, fullname):
class BadSource(str):
def splitlines(self):
return splitlines_ret_val
get_source_called.append(splitlines_ret_val)
return BadSource('spam')
return BadLoader()
loader = BadLoader()
spec = importlib.machinery.ModuleSpec('foobar', loader)
return {'__loader__': loader,
'__spec__': spec,
'__name__': 'foobar'}
wmod = self.module
with original_warnings.catch_warnings(module=wmod):
wmod.filterwarnings('default', category=UserWarning)
linecache.clearcache()
with support.captured_stderr() as stderr:
wmod.warn_explicit(
'foo', UserWarning, 'bar', 1,
module_globals={'__loader__': get_bad_loader(42),
'__name__': 'foobar'})
module_globals=get_module_globals(splitlines_ret_val=42))
self.assertIn('UserWarning: foo', stderr.getvalue())
self.assertEqual(get_source_called, [42])
show = wmod._showwarnmsg
try:
linecache.clearcache()
with support.swap_attr(wmod, '_showwarnmsg', None):
del wmod._showwarnmsg
with support.captured_stderr() as stderr:
wmod.warn_explicit(
'eggs', UserWarning, 'bar', 1,
module_globals={'__loader__': get_bad_loader([42]),
'__name__': 'foobar'})
module_globals=get_module_globals(splitlines_ret_val=[42]))
self.assertIn('UserWarning: eggs', stderr.getvalue())
finally:
wmod._showwarnmsg = show
self.assertEqual(get_source_called, [42, [42]])
linecache.clearcache()
@support.cpython_only
def test_issue31411(self):