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Issue #13964: Skip os.*utime*() tests if os.stat() doesn't support timestamp

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with a subsecond resolution
This commit is contained in:
Victor Stinner 2012-02-08 04:09:37 +01:00
parent a2f7c00638
commit 1aa54a417d
2 changed files with 11 additions and 1 deletions
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11
Lib/test/test_os.py
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@ -27,6 +27,14 @@ try:
except ImportError: except ImportError:
threading = None threading = None
os.stat_float_times(True)
st = os.stat(__file__)
stat_supports_subsecond = (
# check if float and int timestamps are different
(st.st_atime != st[7])
or (st.st_mtime != st[8])
or (st.st_ctime != st[9]))
# Detect whether we're on a Linux system that uses the (now outdated # Detect whether we're on a Linux system that uses the (now outdated
# and unmaintained) linuxthreads threading library. There's an issue # and unmaintained) linuxthreads threading library. There's an issue
# when combining linuxthreads with a failed execv call: see # when combining linuxthreads with a failed execv call: see
@ -300,6 +308,8 @@ class StatAttributeTests(unittest.TestCase):
st2 = os.stat(support.TESTFN) st2 = os.stat(support.TESTFN)
self.assertAlmostEqual(st1.st_mtime, st2.st_mtime, delta=10) self.assertAlmostEqual(st1.st_mtime, st2.st_mtime, delta=10)
@unittest.skipUnless(stat_supports_subsecond,
"os.stat() doesn't has a subsecond resolution")
def _test_utime_subsecond(self, set_time_func): def _test_utime_subsecond(self, set_time_func):
asec, amsec = 1, 901 asec, amsec = 1, 901
atime = asec + amsec * 1e-3 atime = asec + amsec * 1e-3
@ -308,6 +318,7 @@ class StatAttributeTests(unittest.TestCase):
filename = self.fname filename = self.fname
os.utime(filename, (0, 0)) os.utime(filename, (0, 0))
set_time_func(filename, atime, mtime) set_time_func(filename, atime, mtime)
os.stat_float_times(True)
st = os.stat(filename) st = os.stat(filename)
self.assertAlmostEqual(st.st_atime, atime, places=3) self.assertAlmostEqual(st.st_atime, atime, places=3)
self.assertAlmostEqual(st.st_mtime, mtime, places=3) self.assertAlmostEqual(st.st_mtime, mtime, places=3)

1
Modules/posixmodule.c
View file

@ -3539,7 +3539,6 @@ extract_time(PyObject *t, time_t* sec, long* nsec)
mod = fmod(d, 1.0); mod = fmod(d, 1.0);
mod *= 1e9; mod *= 1e9;
*nsec = (long)mod; *nsec = (long)mod;
printf("%g => (%u, %li)\n", d, *sec, *nsec);
return 0; return 0;
} }
#if SIZEOF_TIME_T > SIZEOF_LONG #if SIZEOF_TIME_T > SIZEOF_LONG