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"""Tests for distutils.util."""
import os
import sys
import unittest
import sysconfig as stdlib_sysconfig
from copy import copy
from test.support import run_unittest
from unittest import mock
from distutils.errors import DistutilsPlatformError, DistutilsByteCompileError
from distutils.util import (get_platform, convert_path, change_root,
check_environ, split_quoted, strtobool,
rfc822_escape, byte_compile,
grok_environment_error, get_host_platform)
from distutils import util # used to patch _environ_checked
from distutils import sysconfig
from distutils.tests import support
class UtilTestCase(support.EnvironGuard, unittest.TestCase):
def setUp(self):
super(UtilTestCase, self).setUp()
# saving the environment
self.name = os.name
self.platform = sys.platform
self.version = sys.version
self.sep = os.sep
self.join = os.path.join
self.isabs = os.path.isabs
self.splitdrive = os.path.splitdrive
self._config_vars = copy(sysconfig._config_vars)
# patching os.uname
if hasattr(os, 'uname'):
self.uname = os.uname
self._uname = os.uname()
else:
self.uname = None
self._uname = None
os.uname = self._get_uname
def tearDown(self):
# getting back the environment
os.name = self.name
sys.platform = self.platform
sys.version = self.version
os.sep = self.sep
os.path.join = self.join
os.path.isabs = self.isabs
os.path.splitdrive = self.splitdrive
if self.uname is not None:
os.uname = self.uname
else:
del os.uname
sysconfig._config_vars = copy(self._config_vars)
super(UtilTestCase, self).tearDown()
def _set_uname(self, uname):
self._uname = uname
def _get_uname(self):
return self._uname
def test_get_host_platform(self):
with unittest.mock.patch('os.name', 'nt'):
with unittest.mock.patch('sys.version', '... [... (ARM64)]'):
self.assertEqual(get_host_platform(), 'win-arm64')
with unittest.mock.patch('sys.version', '... [... (ARM)]'):
self.assertEqual(get_host_platform(), 'win-arm32')
with unittest.mock.patch('sys.version_info', (3, 9, 0, 'final', 0)):
self.assertEqual(get_host_platform(), stdlib_sysconfig.get_platform())
def test_get_platform(self):
with unittest.mock.patch('os.name', 'nt'):
with unittest.mock.patch.dict('os.environ', {'VSCMD_ARG_TGT_ARCH': 'x86'}):
self.assertEqual(get_platform(), 'win32')
with unittest.mock.patch.dict('os.environ', {'VSCMD_ARG_TGT_ARCH': 'x64'}):
self.assertEqual(get_platform(), 'win-amd64')
with unittest.mock.patch.dict('os.environ', {'VSCMD_ARG_TGT_ARCH': 'arm'}):
self.assertEqual(get_platform(), 'win-arm32')
with unittest.mock.patch.dict('os.environ', {'VSCMD_ARG_TGT_ARCH': 'arm64'}):
self.assertEqual(get_platform(), 'win-arm64')
def test_convert_path(self):
# linux/mac
os.sep = '/'
def _join(path):
return '/'.join(path)
os.path.join = _join
self.assertEqual(convert_path('/home/to/my/stuff'),
'/home/to/my/stuff')
# win
os.sep = '\\'
def _join(*path):
return '\\'.join(path)
os.path.join = _join
self.assertRaises(ValueError, convert_path, '/home/to/my/stuff')
self.assertRaises(ValueError, convert_path, 'home/to/my/stuff/')
self.assertEqual(convert_path('home/to/my/stuff'),
'home\\to\\my\\stuff')
self.assertEqual(convert_path('.'),
os.curdir)
def test_change_root(self):
# linux/mac
os.name = 'posix'
def _isabs(path):
return path[0] == '/'
os.path.isabs = _isabs
def _join(*path):
return '/'.join(path)
os.path.join = _join
self.assertEqual(change_root('/root', '/old/its/here'),
'/root/old/its/here')
self.assertEqual(change_root('/root', 'its/here'),
'/root/its/here')
# windows
os.name = 'nt'
def _isabs(path):
return path.startswith('c:\\')
os.path.isabs = _isabs
def _splitdrive(path):
if path.startswith('c:'):
return ('', path.replace('c:', ''))
return ('', path)
os.path.splitdrive = _splitdrive
def _join(*path):
return '\\'.join(path)
os.path.join = _join
self.assertEqual(change_root('c:\\root', 'c:\\old\\its\\here'),
'c:\\root\\old\\its\\here')
self.assertEqual(change_root('c:\\root', 'its\\here'),
'c:\\root\\its\\here')
# BugsBunny os (it's a great os)
os.name = 'BugsBunny'
self.assertRaises(DistutilsPlatformError,
change_root, 'c:\\root', 'its\\here')
# XXX platforms to be covered: mac
def test_check_environ(self):
util._environ_checked = 0
os.environ.pop('HOME', None)
check_environ()
self.assertEqual(os.environ['PLAT'], get_platform())
self.assertEqual(util._environ_checked, 1)
@unittest.skipUnless(os.name == 'posix', 'specific to posix')
def test_check_environ_getpwuid(self):
util._environ_checked = 0
os.environ.pop('HOME', None)
import pwd
# only set pw_dir field, other fields are not used
result = pwd.struct_passwd((None, None, None, None, None,
'/home/distutils', None))
with mock.patch.object(pwd, 'getpwuid', return_value=result):
check_environ()
self.assertEqual(os.environ['HOME'], '/home/distutils')
util._environ_checked = 0
os.environ.pop('HOME', None)
# bpo-10496: Catch pwd.getpwuid() error
with mock.patch.object(pwd, 'getpwuid', side_effect=KeyError):
check_environ()
self.assertNotIn('HOME', os.environ)
def test_split_quoted(self):
self.assertEqual(split_quoted('""one"" "two" \'three\' \\four'),
['one', 'two', 'three', 'four'])
def test_strtobool(self):
yes = ('y', 'Y', 'yes', 'True', 't', 'true', 'True', 'On', 'on', '1')
no = ('n', 'no', 'f', 'false', 'off', '0', 'Off', 'No', 'N')
for y in yes:
self.assertTrue(strtobool(y))
for n in no:
self.assertFalse(strtobool(n))
def test_rfc822_escape(self):
header = 'I am a\npoor\nlonesome\nheader\n'
res = rfc822_escape(header)
wanted = ('I am a%(8s)spoor%(8s)slonesome%(8s)s'
'header%(8s)s') % {'8s': '\n'+8*' '}
self.assertEqual(res, wanted)
def test_dont_write_bytecode(self):
# makes sure byte_compile raise a DistutilsError
# if sys.dont_write_bytecode is True
old_dont_write_bytecode = sys.dont_write_bytecode
sys.dont_write_bytecode = True
try:
self.assertRaises(DistutilsByteCompileError, byte_compile, [])
finally:
sys.dont_write_bytecode = old_dont_write_bytecode
def test_grok_environment_error(self):
# test obsolete function to ensure backward compat (#4931)
exc = IOError("Unable to find batch file")
msg = grok_environment_error(exc)
self.assertEqual(msg, "error: Unable to find batch file")
def test_suite():
return unittest.TestLoader().loadTestsFromTestCase(UtilTestCase)
if __name__ == "__main__":
run_unittest(test_suite())
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