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cpython/Lib/test/test_platform.py
Christian Heimes deeaac49e2
bpo-40280: Skip socket, fork, subprocess tests on Emscripten (GH-31986) 
- Add requires_fork and requires_subprocess to more tests
- Skip extension import tests if dlopen is not available
- Don't assume that _testcapi is a shared extension
- Skip a lot of socket tests that don't work on Emscripten
- Skip mmap tests, mmap emulation is incomplete
- venv does not work yet
- Cannot get libc from executable

The "entire" test suite is now passing on Emscripten with EMSDK from git head (91 suites are skipped).
2022-03-22 03:04:36 -07:00

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import os
import copy
import pickle
import platform
import subprocess
import sys
import unittest
from unittest import mock
from test import support
from test.support import os_helper
FEDORA_OS_RELEASE = """\
NAME=Fedora
VERSION="32 (Thirty Two)"
ID=fedora
VERSION_ID=32
VERSION_CODENAME=""
PLATFORM_ID="platform:f32"
PRETTY_NAME="Fedora 32 (Thirty Two)"
ANSI_COLOR="0;34"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:32"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f32/system-administrators-guide/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=32
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=32
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
"""
UBUNTU_OS_RELEASE = """\
NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.1 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
"""
TEST_OS_RELEASE = r"""
# test data
ID_LIKE="egg spam viking"
EMPTY=
# comments and empty lines are ignored
SINGLE_QUOTE='single'
EMPTY_SINGLE=''
DOUBLE_QUOTE="double"
EMPTY_DOUBLE=""
QUOTES="double\'s"
SPECIALS="\$\`\\\'\""
# invalid lines
=invalid
=
INVALID
IN-VALID=value
IN VALID=value
"""
class PlatformTest(unittest.TestCase):
def clear_caches(self):
platform._platform_cache.clear()
platform._sys_version_cache.clear()
platform._uname_cache = None
platform._os_release_cache = None
def test_architecture(self):
res = platform.architecture()
@os_helper.skip_unless_symlink
@support.requires_subprocess()
def test_architecture_via_symlink(self): # issue3762
with support.PythonSymlink() as py:
cmd = "-c", "import platform; print(platform.architecture())"
self.assertEqual(py.call_real(*cmd), py.call_link(*cmd))
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[-6], res.system)
self.assertEqual(res[1], res.node)
self.assertEqual(res[-5], res.node)
self.assertEqual(res[2], res.release)
self.assertEqual(res[-4], res.release)
self.assertEqual(res[3], res.version)
self.assertEqual(res[-3], res.version)
self.assertEqual(res[4], res.machine)
self.assertEqual(res[-2], res.machine)
self.assertEqual(res[5], res.processor)
self.assertEqual(res[-1], res.processor)
self.assertEqual(len(res), 6)
def test_uname_cast_to_tuple(self):
res = platform.uname()
expected = (
res.system, res.node, res.release, res.version, res.machine,
res.processor,
)
self.assertEqual(tuple(res), expected)
def test_uname_replace(self):
res = platform.uname()
new = res._replace(
system='system', node='node', release='release',
version='version', machine='machine')
self.assertEqual(new.system, 'system')
self.assertEqual(new.node, 'node')
self.assertEqual(new.release, 'release')
self.assertEqual(new.version, 'version')
self.assertEqual(new.machine, 'machine')
# processor cannot be replaced
self.assertEqual(new.processor, res.processor)
def test_uname_copy(self):
uname = platform.uname()
self.assertEqual(copy.copy(uname), uname)
self.assertEqual(copy.deepcopy(uname), uname)
def test_uname_pickle(self):
orig = platform.uname()
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
with self.subTest(protocol=proto):
pickled = pickle.dumps(orig, proto)
restored = pickle.loads(pickled)
self.assertEqual(restored, orig)
def test_uname_slices(self):
res = platform.uname()
expected = tuple(res)
self.assertEqual(res[:], expected)
self.assertEqual(res[:5], expected[:5])
@unittest.skipIf(sys.platform in ['win32', 'OpenVMS'], "uname -p not used")
@support.requires_subprocess()
def test_uname_processor(self):
"""
On some systems, the processor must match the output
of 'uname -p'. See Issue 35967 for rationale.
"""
try:
proc_res = subprocess.check_output(['uname', '-p'], text=True).strip()
expect = platform._unknown_as_blank(proc_res)
except (OSError, subprocess.CalledProcessError):
expect = ''
self.assertEqual(platform.uname().processor, expect)
@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 os_helper.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 are on a macOS system, check that the right version
# information is returned
output = subprocess.check_output(['sw_vers'], text=True)
for line in output.splitlines():
if line.startswith('ProductVersion:'):
real_ver = line.strip().split()[-1]
break
else:
self.fail(f"failed to parse sw_vers output: {output!r}")
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)
# For compatibility with older binaries, macOS 11.x may report
# itself as '10.16' rather than '11.x.y'.
if result_list != ['10', '16']:
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', 'arm64'))
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
support.wait_process(pid, exitcode=0)
@unittest.skipIf(support.is_emscripten, "Does not apply to Emscripten")
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'
elif sys.platform == "win32" and not os.path.exists(sys.executable):
# App symlink appears to not exist, but we want the
# real executable here anyway
import _winapi
executable = _winapi.GetModuleFileName(0)
else:
executable = sys.executable
platform.libc_ver(executable)
filename = os_helper.TESTFN
self.addCleanup(os_helper.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'))
def test_macos(self):
self.addCleanup(self.clear_caches)
uname = ('Darwin', 'hostname', '17.7.0',
('Darwin Kernel Version 17.7.0: '
'Thu Jun 21 22:53:14 PDT 2018; '
'root:xnu-4570.71.2~1/RELEASE_X86_64'),
'x86_64', 'i386')
arch = ('64bit', '')
with mock.patch.object(platform, 'uname', return_value=uname), \
mock.patch.object(platform, 'architecture', return_value=arch):
for mac_ver, expected_terse, expected in [
# darwin: mac_ver() returns empty strings
(('', '', ''),
'Darwin-17.7.0',
'Darwin-17.7.0-x86_64-i386-64bit'),
# macOS: mac_ver() returns macOS version
(('10.13.6', ('', '', ''), 'x86_64'),
'macOS-10.13.6',
'macOS-10.13.6-x86_64-i386-64bit'),
]:
with mock.patch.object(platform, 'mac_ver',
return_value=mac_ver):
self.clear_caches()
self.assertEqual(platform.platform(terse=1), expected_terse)
self.assertEqual(platform.platform(), expected)
def test_freedesktop_os_release(self):
self.addCleanup(self.clear_caches)
self.clear_caches()
if any(os.path.isfile(fn) for fn in platform._os_release_candidates):
info = platform.freedesktop_os_release()
self.assertIn("NAME", info)
self.assertIn("ID", info)
info["CPYTHON_TEST"] = "test"
self.assertNotIn(
"CPYTHON_TEST",
platform.freedesktop_os_release()
)
else:
with self.assertRaises(OSError):
platform.freedesktop_os_release()
def test_parse_os_release(self):
info = platform._parse_os_release(FEDORA_OS_RELEASE.splitlines())
self.assertEqual(info["NAME"], "Fedora")
self.assertEqual(info["ID"], "fedora")
self.assertNotIn("ID_LIKE", info)
self.assertEqual(info["VERSION_CODENAME"], "")
info = platform._parse_os_release(UBUNTU_OS_RELEASE.splitlines())
self.assertEqual(info["NAME"], "Ubuntu")
self.assertEqual(info["ID"], "ubuntu")
self.assertEqual(info["ID_LIKE"], "debian")
self.assertEqual(info["VERSION_CODENAME"], "focal")
info = platform._parse_os_release(TEST_OS_RELEASE.splitlines())
expected = {
"ID": "linux",
"NAME": "Linux",
"PRETTY_NAME": "Linux",
"ID_LIKE": "egg spam viking",
"EMPTY": "",
"DOUBLE_QUOTE": "double",
"EMPTY_DOUBLE": "",
"SINGLE_QUOTE": "single",
"EMPTY_SINGLE": "",
"QUOTES": "double's",
"SPECIALS": "$`\\'\"",
}
self.assertEqual(info, expected)
self.assertEqual(len(info["SPECIALS"]), 5)
if __name__ == '__main__':
unittest.main()
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