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cpython/Lib/test/test_platform.py
Victor Stinner 476b113ed8
bpo-35389: platform.libc_ver() uses os.confstr() (GH-10891) 
platform.libc_ver() now uses os.confstr('CS_GNU_LIBC_VERSION') if
available and the *executable* parameter is not set. The default
value of the libc_ver() *executable* parameter becomes None.

Quick benchmark on Fedora 29:

python3 -m perf command ./python -S -c 'import platform; platform.libc_ver()'
94.9 ms +- 4.3 ms -> 33.2 ms +- 1.4 ms: 2.86x faster (-65%)
2018-12-05 14:04:52 +01:00

348 lines
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import os
import platform
import subprocess
import sys
import sysconfig
import tempfile
import unittest
from unittest import mock
from test import support
class PlatformTest(unittest.TestCase):
def test_architecture(self):
res = platform.architecture()
@support.skip_unless_symlink
def test_architecture_via_symlink(self): # issue3762
# On Windows, the EXE needs to know where pythonXY.dll and *.pyd is at
# so we add the directory to the path, PYTHONHOME and PYTHONPATH.
env = None
if sys.platform == "win32":
env = {k.upper(): os.environ[k] for k in os.environ}
env["PATH"] = "{};{}".format(
os.path.dirname(sys.executable), env.get("PATH", ""))
env["PYTHONHOME"] = os.path.dirname(sys.executable)
if sysconfig.is_python_build(True):
env["PYTHONPATH"] = os.path.dirname(os.__file__)
def get(python, env=None):
cmd = [python, '-c',
'import platform; print(platform.architecture())']
p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, env=env)
r = p.communicate()
if p.returncode:
print(repr(r[0]))
print(repr(r[1]), file=sys.stderr)
self.fail('unexpected return code: {0} (0x{0:08X})'
.format(p.returncode))
return r
real = os.path.realpath(sys.executable)
link = os.path.abspath(support.TESTFN)
os.symlink(real, link)
try:
self.assertEqual(get(real), get(link, env=env))
finally:
os.remove(link)
def test_platform(self):
for aliased in (False, True):
for terse in (False, True):
res = platform.platform(aliased, terse)
def test_system(self):
res = platform.system()
def test_node(self):
res = platform.node()
def test_release(self):
res = platform.release()
def test_version(self):
res = platform.version()
def test_machine(self):
res = platform.machine()
def test_processor(self):
res = platform.processor()
def setUp(self):
self.save_version = sys.version
self.save_git = sys._git
self.save_platform = sys.platform
def tearDown(self):
sys.version = self.save_version
sys._git = self.save_git
sys.platform = self.save_platform
def test_sys_version(self):
# Old test.
for input, output in (
('2.4.3 (#1, Jun 21 2006, 13:54:21) \n[GCC 3.3.4 (pre 3.3.5 20040809)]',
('CPython', '2.4.3', '', '', '1', 'Jun 21 2006 13:54:21', 'GCC 3.3.4 (pre 3.3.5 20040809)')),
('IronPython 1.0.60816 on .NET 2.0.50727.42',
('IronPython', '1.0.60816', '', '', '', '', '.NET 2.0.50727.42')),
('IronPython 1.0 (1.0.61005.1977) on .NET 2.0.50727.42',
('IronPython', '1.0.0', '', '', '', '', '.NET 2.0.50727.42')),
('2.4.3 (truncation, date, t) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', 'date t', 'GCC')),
('2.4.3 (truncation, date, ) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', 'date', 'GCC')),
('2.4.3 (truncation, date,) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', 'date', 'GCC')),
('2.4.3 (truncation, date) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', 'date', 'GCC')),
('2.4.3 (truncation, d) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', 'd', 'GCC')),
('2.4.3 (truncation, ) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', '', 'GCC')),
('2.4.3 (truncation,) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', '', 'GCC')),
('2.4.3 (truncation) \n[GCC]',
('CPython', '2.4.3', '', '', 'truncation', '', 'GCC')),
):
# branch and revision are not "parsed", but fetched
# from sys._git. Ignore them
(name, version, branch, revision, buildno, builddate, compiler) \
= platform._sys_version(input)
self.assertEqual(
(name, version, '', '', buildno, builddate, compiler), output)
# Tests for python_implementation(), python_version(), python_branch(),
# python_revision(), python_build(), and python_compiler().
sys_versions = {
("2.6.1 (r261:67515, Dec 6 2008, 15:26:00) \n[GCC 4.0.1 (Apple Computer, Inc. build 5370)]",
('CPython', 'tags/r261', '67515'), self.save_platform)
:
("CPython", "2.6.1", "tags/r261", "67515",
('r261:67515', 'Dec 6 2008 15:26:00'),
'GCC 4.0.1 (Apple Computer, Inc. build 5370)'),
("IronPython 2.0 (2.0.0.0) on .NET 2.0.50727.3053", None, "cli")
:
("IronPython", "2.0.0", "", "", ("", ""),
".NET 2.0.50727.3053"),
("2.6.1 (IronPython 2.6.1 (2.6.10920.0) on .NET 2.0.50727.1433)", None, "cli")
:
("IronPython", "2.6.1", "", "", ("", ""),
".NET 2.0.50727.1433"),
("2.7.4 (IronPython 2.7.4 (2.7.0.40) on Mono 4.0.30319.1 (32-bit))", None, "cli")
:
("IronPython", "2.7.4", "", "", ("", ""),
"Mono 4.0.30319.1 (32-bit)"),
("2.5 (trunk:6107, Mar 26 2009, 13:02:18) \n[Java HotSpot(TM) Client VM (\"Apple Computer, Inc.\")]",
('Jython', 'trunk', '6107'), "java1.5.0_16")
:
("Jython", "2.5.0", "trunk", "6107",
('trunk:6107', 'Mar 26 2009'), "java1.5.0_16"),
("2.5.2 (63378, Mar 26 2009, 18:03:29)\n[PyPy 1.0.0]",
('PyPy', 'trunk', '63378'), self.save_platform)
:
("PyPy", "2.5.2", "trunk", "63378", ('63378', 'Mar 26 2009'),
"")
}
for (version_tag, scm, sys_platform), info in \
sys_versions.items():
sys.version = version_tag
if scm is None:
if hasattr(sys, "_git"):
del sys._git
else:
sys._git = scm
if sys_platform is not None:
sys.platform = sys_platform
self.assertEqual(platform.python_implementation(), info[0])
self.assertEqual(platform.python_version(), info[1])
self.assertEqual(platform.python_branch(), info[2])
self.assertEqual(platform.python_revision(), info[3])
self.assertEqual(platform.python_build(), info[4])
self.assertEqual(platform.python_compiler(), info[5])
def test_system_alias(self):
res = platform.system_alias(
platform.system(),
platform.release(),
platform.version(),
)
def test_uname(self):
res = platform.uname()
self.assertTrue(any(res))
self.assertEqual(res[0], res.system)
self.assertEqual(res[1], res.node)
self.assertEqual(res[2], res.release)
self.assertEqual(res[3], res.version)
self.assertEqual(res[4], res.machine)
self.assertEqual(res[5], res.processor)
@unittest.skipUnless(sys.platform.startswith('win'), "windows only test")
def test_uname_win32_ARCHITEW6432(self):
# Issue 7860: make sure we get architecture from the correct variable
# on 64 bit Windows: if PROCESSOR_ARCHITEW6432 exists we should be
# using it, per
# http://blogs.msdn.com/david.wang/archive/2006/03/26/HOWTO-Detect-Process-Bitness.aspx
try:
with support.EnvironmentVarGuard() as environ:
if 'PROCESSOR_ARCHITEW6432' in environ:
del environ['PROCESSOR_ARCHITEW6432']
environ['PROCESSOR_ARCHITECTURE'] = 'foo'
platform._uname_cache = None
system, node, release, version, machine, processor = platform.uname()
self.assertEqual(machine, 'foo')
environ['PROCESSOR_ARCHITEW6432'] = 'bar'
platform._uname_cache = None
system, node, release, version, machine, processor = platform.uname()
self.assertEqual(machine, 'bar')
finally:
platform._uname_cache = None
def test_java_ver(self):
res = platform.java_ver()
if sys.platform == 'java':
self.assertTrue(all(res))
def test_win32_ver(self):
res = platform.win32_ver()
def test_mac_ver(self):
res = platform.mac_ver()
if platform.uname().system == 'Darwin':
# We're on a MacOSX system, check that
# the right version information is returned
fd = os.popen('sw_vers', 'r')
real_ver = None
for ln in fd:
if ln.startswith('ProductVersion:'):
real_ver = ln.strip().split()[-1]
break
fd.close()
self.assertFalse(real_ver is None)
result_list = res[0].split('.')
expect_list = real_ver.split('.')
len_diff = len(result_list) - len(expect_list)
# On Snow Leopard, sw_vers reports 10.6.0 as 10.6
if len_diff > 0:
expect_list.extend(['0'] * len_diff)
self.assertEqual(result_list, expect_list)
# res[1] claims to contain
# (version, dev_stage, non_release_version)
# That information is no longer available
self.assertEqual(res[1], ('', '', ''))
if sys.byteorder == 'little':
self.assertIn(res[2], ('i386', 'x86_64'))
else:
self.assertEqual(res[2], 'PowerPC')
@unittest.skipUnless(sys.platform == 'darwin', "OSX only test")
def test_mac_ver_with_fork(self):
# Issue7895: platform.mac_ver() crashes when using fork without exec
#
# This test checks that the fix for that issue works.
#
pid = os.fork()
if pid == 0:
# child
info = platform.mac_ver()
os._exit(0)
else:
# parent
cpid, sts = os.waitpid(pid, 0)
self.assertEqual(cpid, pid)
self.assertEqual(sts, 0)
def test_libc_ver(self):
# check that libc_ver(executable) doesn't raise an exception
if os.path.isdir(sys.executable) and \
os.path.exists(sys.executable+'.exe'):
# Cygwin horror
executable = sys.executable + '.exe'
else:
executable = sys.executable
platform.libc_ver(executable)
filename = support.TESTFN
self.addCleanup(support.unlink, filename)
with mock.patch('os.confstr', create=True, return_value='mock 1.0'):
# test os.confstr() code path
self.assertEqual(platform.libc_ver(), ('mock', '1.0'))
# test the different regular expressions
for data, expected in (
(b'__libc_init', ('libc', '')),
(b'GLIBC_2.9', ('glibc', '2.9')),
(b'libc.so.1.2.5', ('libc', '1.2.5')),
(b'libc_pthread.so.1.2.5', ('libc', '1.2.5_pthread')),
(b'', ('', '')),
):
with open(filename, 'wb') as fp:
fp.write(b'[xxx%sxxx]' % data)
fp.flush()
# os.confstr() must not be used if executable is set
self.assertEqual(platform.libc_ver(executable=filename),
expected)
# binary containing multiple versions: get the most recent,
# make sure that 1.9 is seen as older than 1.23.4
chunksize = 16384
with open(filename, 'wb') as f:
# test match at chunk boundary
f.write(b'x'*(chunksize - 10))
f.write(b'GLIBC_1.23.4\0GLIBC_1.9\0GLIBC_1.21\0')
self.assertEqual(platform.libc_ver(filename, chunksize=chunksize),
('glibc', '1.23.4'))
@support.cpython_only
def test__comparable_version(self):
from platform import _comparable_version as V
self.assertEqual(V('1.2.3'), V('1.2.3'))
self.assertLess(V('1.2.3'), V('1.2.10'))
self.assertEqual(V('1.2.3.4'), V('1_2-3+4'))
self.assertLess(V('1.2spam'), V('1.2dev'))
self.assertLess(V('1.2dev'), V('1.2alpha'))
self.assertLess(V('1.2dev'), V('1.2a'))
self.assertLess(V('1.2alpha'), V('1.2beta'))
self.assertLess(V('1.2a'), V('1.2b'))
self.assertLess(V('1.2beta'), V('1.2c'))
self.assertLess(V('1.2b'), V('1.2c'))
self.assertLess(V('1.2c'), V('1.2RC'))
self.assertLess(V('1.2c'), V('1.2rc'))
self.assertLess(V('1.2RC'), V('1.2.0'))
self.assertLess(V('1.2rc'), V('1.2.0'))
self.assertLess(V('1.2.0'), V('1.2pl'))
self.assertLess(V('1.2.0'), V('1.2p'))
self.assertLess(V('1.5.1'), V('1.5.2b2'))
self.assertLess(V('3.10a'), V('161'))
self.assertEqual(V('8.02'), V('8.02'))
self.assertLess(V('3.4j'), V('1996.07.12'))
self.assertLess(V('3.1.1.6'), V('3.2.pl0'))
self.assertLess(V('2g6'), V('11g'))
self.assertLess(V('0.9'), V('2.2'))
self.assertLess(V('1.2'), V('1.2.1'))
self.assertLess(V('1.1'), V('1.2.2'))
self.assertLess(V('1.1'), V('1.2'))
self.assertLess(V('1.2.1'), V('1.2.2'))
self.assertLess(V('1.2'), V('1.2.2'))
self.assertLess(V('0.4'), V('0.4.0'))
self.assertLess(V('1.13++'), V('5.5.kw'))
self.assertLess(V('0.960923'), V('2.2beta29'))
if __name__ == '__main__':
unittest.main()
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