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cpython/Lib/test/test_platform.py

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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
try:
# Some of the iOS tests need ctypes to operate.
# Confirm that the ctypes module is available
# is available.
import _ctypes
except ImportError:
_ctypes = None
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)')),
('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)'),
("3.10.8 (tags/v3.10.8:aaaf517424, Feb 14 2023, 16:28:12) [GCC 9.4.0]",
None, "linux")
:
('CPython', '3.10.8', '', '',
('tags/v3.10.8:aaaf517424', 'Feb 14 2023 16:28:12'), 'GCC 9.4.0'),
("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])
with self.assertRaises(ValueError):
platform._sys_version('2. 4.3 (truncation) \n[GCC]')
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)
if os.name == "posix":
uname = os.uname()
self.assertEqual(res.node, uname.nodename)
self.assertEqual(res.version, uname.version)
self.assertEqual(res.machine, uname.machine)
if sys.platform == "android":
self.assertEqual(res.system, "Android")
self.assertEqual(res.release, platform.android_ver().release)
elif sys.platform == "ios":
# Platform module needs ctypes for full operation. If ctypes
# isn't available, there's no ObjC module, and dummy values are
# returned.
if _ctypes:
self.assertIn(res.system, {"iOS", "iPadOS"})
self.assertEqual(res.release, platform.ios_ver().release)
else:
self.assertEqual(res.system, "")
self.assertEqual(res.release, "")
else:
self.assertEqual(res.system, uname.sysname)
self.assertEqual(res.release, uname.release)
@unittest.skipUnless(sys.platform.startswith('win'), "windows only test")
def test_uname_win32_without_wmi(self):
def raises_oserror(*a):
raise OSError()
with support.swap_attr(platform, '_wmi_query', raises_oserror):
self.test_uname()
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])
def test_uname_fields(self):
self.assertIn('processor', platform.uname()._fields)
def test_uname_asdict(self):
res = platform.uname()._asdict()
self.assertEqual(len(res), 6)
self.assertIn('processor', res)
@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
# We also need to suppress WMI checks, as those are reliable and
# overrule the environment variables
def raises_oserror(*a):
raise OSError()
with support.swap_attr(platform, '_wmi_query', raises_oserror):
with os_helper.EnvironmentVarGuard() as environ:
try:
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):
import re
msg = re.escape(
"'java_ver' is deprecated and slated for removal in Python 3.15"
)
with self.assertWarnsRegex(DeprecationWarning, msg):
res = platform.java_ver()
self.assertEqual(len(res), 4)
@unittest.skipUnless(support.MS_WINDOWS, 'This test only makes sense on Windows')
def test_win32_ver(self):
release1, version1, csd1, ptype1 = 'a', 'b', 'c', 'd'
res = platform.win32_ver(release1, version1, csd1, ptype1)
self.assertEqual(len(res), 4)
release, version, csd, ptype = res
if release:
# Currently, release names always come from internal dicts,
# but this could change over time. For now, we just check that
# release is something different from what we have passed.
self.assertNotEqual(release, release1)
if version:
# It is rather hard to test explicit version without
# going deep into the details.
self.assertIn('.', version)
for v in version.split('.'):
int(v) # should not fail
if csd:
self.assertTrue(csd.startswith('SP'), msg=csd)
if ptype:
if os.cpu_count() > 1:
self.assertIn('Multiprocessor', ptype)
else:
self.assertIn('Uniprocessor', ptype)
@unittest.skipIf(support.MS_WINDOWS, 'This test only makes sense on non Windows')
def test_win32_ver_on_non_windows(self):
release, version, csd, ptype = 'a', '1.0', 'c', 'd'
res = platform.win32_ver(release, version, csd, ptype)
self.assertSequenceEqual(res, (release, version, csd, ptype), seq_type=tuple)
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)
def test_ios_ver(self):
result = platform.ios_ver()
# ios_ver is only fully available on iOS where ctypes is available.
if sys.platform == "ios" and _ctypes:
system, release, model, is_simulator = result
# Result is a namedtuple
self.assertEqual(result.system, system)
self.assertEqual(result.release, release)
self.assertEqual(result.model, model)
self.assertEqual(result.is_simulator, is_simulator)
# We can't assert specific values without reproducing the logic of
# ios_ver(), so we check that the values are broadly what we expect.
# System is either iOS or iPadOS, depending on the test device
self.assertIn(system, {"iOS", "iPadOS"})
# Release is a numeric version specifier with at least 2 parts
parts = release.split(".")
self.assertGreaterEqual(len(parts), 2)
self.assertTrue(all(part.isdigit() for part in parts))
# If this is a simulator, we get a high level device descriptor
# with no identifying model number. If this is a physical device,
# we get a model descriptor like "iPhone13,1"
if is_simulator:
self.assertIn(model, {"iPhone", "iPad"})
else:
self.assertTrue(
(model.startswith("iPhone") or model.startswith("iPad"))
and "," in model
)
self.assertEqual(type(is_simulator), bool)
else:
# On non-iOS platforms, calling ios_ver doesn't fail; you get
# default values
self.assertEqual(result.system, "")
self.assertEqual(result.release, "")
self.assertEqual(result.model, "")
self.assertFalse(result.is_simulator)
# Check the fallback values can be overridden by arguments
override = platform.ios_ver("Foo", "Bar", "Whiz", True)
self.assertEqual(override.system, "Foo")
self.assertEqual(override.release, "Bar")
self.assertEqual(override.model, "Whiz")
self.assertTrue(override.is_simulator)
@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'))
def test_android_ver(self):
res = platform.android_ver()
self.assertIsInstance(res, tuple)
self.assertEqual(res, (res.release, res.api_level, res.manufacturer,
res.model, res.device, res.is_emulator))
if sys.platform == "android":
for name in ["release", "manufacturer", "model", "device"]:
with self.subTest(name):
value = getattr(res, name)
self.assertIsInstance(value, str)
self.assertNotEqual(value, "")
self.assertIsInstance(res.api_level, int)
self.assertGreaterEqual(res.api_level, sys.getandroidapilevel())
self.assertIsInstance(res.is_emulator, bool)
# When not running on Android, it should return the default values.
else:
self.assertEqual(res.release, "")
self.assertEqual(res.api_level, 0)
self.assertEqual(res.manufacturer, "")
self.assertEqual(res.model, "")
self.assertEqual(res.device, "")
self.assertEqual(res.is_emulator, False)
# Default values may also be overridden using parameters.
res = platform.android_ver(
"alpha", 1, "bravo", "charlie", "delta", True)
self.assertEqual(res.release, "alpha")
self.assertEqual(res.api_level, 1)
self.assertEqual(res.manufacturer, "bravo")
self.assertEqual(res.model, "charlie")
self.assertEqual(res.device, "delta")
self.assertEqual(res.is_emulator, True)
@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(sys, "platform", "darwin"), \
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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