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import os, sys
import py
from rpython.rlib import rposix_stat
from rpython.tool.udir import udir
from rpython.translator.c.test.test_genc import compile
from rpython.rtyper.lltypesystem import lltype
class TestPosixStatFunctions:
@py.test.mark.skipif("sys.platform == 'win32'",
reason="win32 only has the portable fields")
def test_has_all_fields(self):
# XXX this test is obscure! it will fail if the exact set of
# XXX stat fields found differs from the one we expect on Linux.
# XXX Why?
assert rposix_stat.STAT_FIELDS == (
rposix_stat.ALL_STAT_FIELDS[:13] +
rposix_stat.ALL_STAT_FIELDS[-3:])
def test_stat(self):
def check(f):
# msec resolution, +- rounding error
expected = int(os.stat(f).st_mtime * 1000)
assert abs(int(rposix_stat.stat(f).st_mtime * 1000) - expected) < 2
assert abs(int(rposix_stat.stat(unicode(f)).st_mtime * 1000) - expected) < 2
if sys.platform == 'win32':
check('c:/')
check(os.environ['TEMP'])
else:
check('/')
check('/tmp')
check(sys.executable)
def test_fstat(self):
stat = rposix_stat.fstat(0) # stdout
assert stat.st_mode != 0
def test_stat_large_number(self):
fname = udir.join('test_stat_large_number.txt')
fname.ensure()
t1 = 5000000000.0
try:
os.utime(str(fname), (t1, t1))
except OverflowError:
py.test.skip("This platform doesn't support setting stat times "
"to large values")
assert rposix_stat.stat(str(fname)).st_mtime == t1
@py.test.mark.skipif(not hasattr(os, 'statvfs'),
reason='posix specific function')
def test_statvfs(self):
try:
os.statvfs('.')
except OSError as e:
py.test.skip("the underlying os.statvfs() failed: %s" % e)
rposix_stat.statvfs('.')
@py.test.mark.skipif(not hasattr(os, 'fstatvfs'),
reason='posix specific function')
def test_fstatvfs(self):
try:
os.fstatvfs(0)
except OSError as e:
py.test.skip("the underlying os.fstatvfs() failed: %s" % e)
rposix_stat.fstatvfs(0)
@py.test.mark.skipif("not hasattr(rposix_stat, 'fstatat')")
def test_fstatat(tmpdir):
tmpdir.join('file').write('text')
dirfd = os.open(str(tmpdir), os.O_RDONLY)
try:
result = rposix_stat.fstatat('file', dir_fd=dirfd, follow_symlinks=False)
finally:
os.close(dirfd)
assert result.st_atime == tmpdir.join('file').atime()
def test_high_precision_stat_time():
def f():
st = os.stat('.')
# should be supported on all platforms, but give a result whose
# precision might be lower than full nanosecond
highprec = rposix_stat.get_stat_ns_as_bigint(st, "ctime")
return '%s;%s' % (st.st_ctime, highprec.str())
fc = compile(f, [])
as_string = fc()
asfloat, highprec = as_string.split(';')
asfloat = float(asfloat)
highprec = int(highprec)
st = os.stat('.')
assert abs(asfloat - st.st_ctime) < 500e-9
assert abs(highprec - int(st.st_ctime * 1e9)) < 500
assert abs(rposix_stat.get_stat_ns_as_bigint(st, "ctime").tolong()
- st.st_ctime * 1e9) < 3
if rposix_stat.TIMESPEC is not None:
with lltype.scoped_alloc(rposix_stat.STAT_STRUCT.TO) as stresult:
rposix_stat.c_stat(".", stresult)
assert 0 <= stresult.c_st_ctim.c_tv_nsec <= 999999999
assert highprec == (int(stresult.c_st_ctim.c_tv_sec) * 1000000000
+ int(stresult.c_st_ctim.c_tv_nsec))
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