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[tests] fix test_fcntl issue when run in a ChromeOS linux runtime (GH-133053)

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* [tests] test_fcntl fails when run in a ChromeOS linux runtime container.

It doesn't appear to support F_NOTIFY? Detect the lack of that and skip the test.
This commit is contained in:
Gregory P. Smith 2025-04-27 13:28:23 -07:00 • committed by GitHub
parent 276252565c
commit 355ee1a429
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GPG key ID: B5690EEEBB952194
1 changed files with 8 additions and 2 deletions
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10
Lib/test/test_fcntl.py
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@ -1,5 +1,6 @@
"""Test program for the fcntl C module.
"""
import errno
import multiprocessing
import platform
import os
@ -135,16 +136,21 @@ class TestFcntl(unittest.TestCase):
or platform.system() == "Android",
"this platform returns EINVAL for F_NOTIFY DN_MULTISHOT")
def test_fcntl_64_bit(self):
# Issue #1309352: fcntl shouldn't fail when the third arg fits in a
# Issue GH-42434: fcntl shouldn't fail when the third arg fits in a
# C 'long' but not in a C 'int'.
try:
cmd = fcntl.F_NOTIFY
# This flag is larger than 2**31 in 64-bit builds
# DN_MULTISHOT is >= 2**31 in 64-bit builds
flags = fcntl.DN_MULTISHOT
except AttributeError:
self.skipTest("F_NOTIFY or DN_MULTISHOT unavailable")
fd = os.open(os.path.dirname(os.path.abspath(TESTFN)), os.O_RDONLY)
try:
try:
fcntl.fcntl(fd, cmd, fcntl.DN_DELETE)
except OSError as exc:
if exc.errno == errno.EINVAL:
self.skipTest("F_NOTIFY not available by this environment")
fcntl.fcntl(fd, cmd, flags)
finally:
os.close(fd)