https://github.com/python/cpython/commit/d4e3529e66cf5d43b663d5416ed99c4ffb5429ff commit: d4e3529e66cf5d43b663d5416ed99c4ffb5429ff branch: 3.15 author: Miss Islington (bot) <[email protected]> committer: serhiy-storchaka <[email protected]> date: 2026-07-22T07:32:39Z summary:
[3.15] gh-154427: Check the access time in UtimeTests only if it is stored (GH-154428) (GH-154432) HAMMER2 on DragonFly BSD does not store the access time and os.stat() returns the modification time instead. Probe the file system, like it is already done for the timestamp resolution. (cherry picked from commit 6f8f97fe5246837b93e6c2f3525aa9f623ecd30b) Co-authored-by: Serhiy Storchaka <[email protected]> Co-authored-by: Claude Opus 4.8 <[email protected]> files: M Lib/test/test_os/test_os.py diff --git a/Lib/test/test_os/test_os.py b/Lib/test/test_os/test_os.py index 6be86ac56a0d1f..f9919e824b1abe 100644 --- a/Lib/test/test_os/test_os.py +++ b/Lib/test/test_os/test_os.py @@ -1058,11 +1058,18 @@ def support_subsecond(self, filename): or (st.st_mtime != st[8]) or (st.st_ctime != st[9])) + def support_atime(self, filename): + # Heuristic to check if the filesystem stores the access time. + # Use whole seconds, to not depend on the timestamp resolution. + os.utime(filename, (1, 2)) + return os.stat(filename).st_atime == 1 + def _test_utime(self, set_time, filename=None): if not filename: filename = self.fname support_subsecond = self.support_subsecond(filename) + support_atime = self.support_atime(filename) if support_subsecond: # Timestamp with a resolution of 1 microsecond (10^-6). # @@ -1089,18 +1096,22 @@ def _test_utime(self, set_time, filename=None): # digits worth of sub-second precision. # Some day it would be good to fix this upstream. delta=1e-5 - self.assertAlmostEqual(st.st_atime, atime_ns * 1e-9, delta=1e-5) + if support_atime: + self.assertAlmostEqual(st.st_atime, atime_ns * 1e-9, delta=1e-5) + self.assertAlmostEqual(st.st_atime_ns, atime_ns, delta=1e9 * 1e-5) self.assertAlmostEqual(st.st_mtime, mtime_ns * 1e-9, delta=1e-5) - self.assertAlmostEqual(st.st_atime_ns, atime_ns, delta=1e9 * 1e-5) self.assertAlmostEqual(st.st_mtime_ns, mtime_ns, delta=1e9 * 1e-5) else: if support_subsecond: - self.assertAlmostEqual(st.st_atime, atime_ns * 1e-9, delta=1e-6) + if support_atime: + self.assertAlmostEqual(st.st_atime, atime_ns * 1e-9, delta=1e-6) self.assertAlmostEqual(st.st_mtime, mtime_ns * 1e-9, delta=1e-6) else: - self.assertEqual(st.st_atime, atime_ns * 1e-9) + if support_atime: + self.assertEqual(st.st_atime, atime_ns * 1e-9) self.assertEqual(st.st_mtime, mtime_ns * 1e-9) - self.assertEqual(st.st_atime_ns, atime_ns) + if support_atime: + self.assertEqual(st.st_atime_ns, atime_ns) self.assertEqual(st.st_mtime_ns, mtime_ns) def test_utime(self): _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
