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✏️ test_sysconfig.py

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"""Tests for sysconfig."""

import unittest
import sys
import os
import shutil
import subprocess
from copy import copy, deepcopy

from test.test_support import run_unittest, TESTFN, unlink, get_attribute

import sysconfig
from sysconfig import (get_paths, get_platform, get_config_vars,
                       get_path, get_path_names, _INSTALL_SCHEMES,
                       _get_default_scheme, _expand_vars,
                       get_scheme_names, get_config_var)
import _osx_support

class TestSysConfig(unittest.TestCase):

def setUp(self):
        """Make a copy of sys.path"""
        super(TestSysConfig, self).setUp()
        self.sys_path = sys.path[:]
        self.makefile = None
        # 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
        # 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)
        self.old_environ = deepcopy(os.environ)

def tearDown(self):
        """Restore sys.path"""
        sys.path[:] = self.sys_path
        if self.makefile is not None:
            os.unlink(self.makefile)
        self._cleanup_testfn()
        if self.uname is not None:
            os.uname = self.uname
        else:
            del os.uname
        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
        sysconfig._CONFIG_VARS = copy(self._config_vars)
        for key, value in self.old_environ.items():
            if os.environ.get(key) != value:
                os.environ[key] = value

for key in os.environ.keys():
            if key not in self.old_environ:
                del os.environ[key]

super(TestSysConfig, self).tearDown()

def _set_uname(self, uname):
        self._uname = uname

def _get_uname(self):
        return self._uname

def _cleanup_testfn(self):
        path = TESTFN
        if os.path.isfile(path):
            os.remove(path)
        elif os.path.isdir(path):
            shutil.rmtree(path)

def test_get_path_names(self):
        self.assertEqual(get_path_names(), sysconfig._SCHEME_KEYS)

def test_get_paths(self):
        scheme = get_paths()
        default_scheme = _get_default_scheme()
        wanted = _expand_vars(default_scheme, None)
        wanted = wanted.items()
        wanted.sort()
        scheme = scheme.items()
        scheme.sort()
        self.assertEqual(scheme, wanted)

def test_get_path(self):
        # xxx make real tests here
        for scheme in _INSTALL_SCHEMES:
            for name in _INSTALL_SCHEMES[scheme]:
                res = get_path(name, scheme)

def test_get_config_vars(self):
        cvars = get_config_vars()
        self.assertIsInstance(cvars, dict)
        self.assertTrue(cvars)

def test_get_platform(self):
        # windows XP, 32bits
        os.name = 'nt'
        sys.version = ('2.4.4 (#71, Oct 18 2006, 08:34:43) '
                       '[MSC v.1310 32 bit (Intel)]')
        sys.platform = 'win32'
        self.assertEqual(get_platform(), 'win32')

# windows XP, amd64
        os.name = 'nt'
        sys.version = ('2.4.4 (#71, Oct 18 2006, 08:34:43) '
                       '[MSC v.1310 32 bit (Amd64)]')
        sys.platform = 'win32'
        self.assertEqual(get_platform(), 'win-amd64')

# windows XP, itanium
        os.name = 'nt'
        sys.version = ('2.4.4 (#71, Oct 18 2006, 08:34:43) '
                       '[MSC v.1310 32 bit (Itanium)]')
        sys.platform = 'win32'
        self.assertEqual(get_platform(), 'win-ia64')

# macbook
        os.name = 'posix'
        sys.version = ('2.5 (r25:51918, Sep 19 2006, 08:49:13) '
                       '\n[GCC 4.0.1 (Apple Computer, Inc. build 5341)]')
        sys.platform = 'darwin'
        self._set_uname(('Darwin', 'macziade', '8.11.1',
                   ('Darwin Kernel Version 8.11.1: '
                    'Wed Oct 10 18:23:28 PDT 2007; '
                    'root:xnu-792.25.20~1/RELEASE_I386'), 'PowerPC'))
        _osx_support._remove_original_values(get_config_vars())
        get_config_vars()['MACOSX_DEPLOYMENT_TARGET'] = '10.3'

get_config_vars()['CFLAGS'] = ('-fno-strict-aliasing -DNDEBUG -g '
                                       '-fwrapv -O3 -Wall -Wstrict-prototypes')

maxint = sys.maxint
        try:
            sys.maxint = 2147483647
            self.assertEqual(get_platform(), 'macosx-10.3-ppc')
            sys.maxint = 9223372036854775807
            self.assertEqual(get_platform(), 'macosx-10.3-ppc64')
        finally:
            sys.maxint = maxint

self._set_uname(('Darwin', 'macziade', '8.11.1',
                   ('Darwin Kernel Version 8.11.1: '
                    'Wed Oct 10 18:23:28 PDT 2007; '
                    'root:xnu-792.25.20~1/RELEASE_I386'), 'i386'))
        _osx_support._remove_original_values(get_config_vars())
        get_config_vars()['MACOSX_DEPLOYMENT_TARGET'] = '10.3'

get_config_vars()['CFLAGS'] = ('-fno-strict-aliasing -DNDEBUG -g '
                                       '-fwrapv -O3 -Wall -Wstrict-prototypes')

maxint = sys.maxint
        try:
            sys.maxint = 2147483647
            self.assertEqual(get_platform(), 'macosx-10.3-i386')
            sys.maxint = 9223372036854775807
            self.assertEqual(get_platform(), 'macosx-10.3-x86_64')
        finally:
            sys.maxint = maxint

# macbook with fat binaries (fat, universal or fat64)
        _osx_support._remove_original_values(get_config_vars())
        get_config_vars()['MACOSX_DEPLOYMENT_TARGET'] = '10.4'
        get_config_vars()['CFLAGS'] = ('-arch ppc -arch i386 -isysroot '
                                       '/Developer/SDKs/MacOSX10.4u.sdk  '
                                       '-fno-strict-aliasing -fno-common '
                                       '-dynamic -DNDEBUG -g -O3')

self.assertEqual(get_platform(), 'macosx-10.4-fat')

_osx_support._remove_original_values(get_config_vars())
        get_config_vars()['CFLAGS'] = ('-arch x86_64 -arch i386 -isysroot '
                                       '/Developer/SDKs/MacOSX10.4u.sdk  '
                                       '-fno-strict-aliasing -fno-common '
                                       '-dynamic -DNDEBUG -g -O3')

self.assertEqual(get_platform(), 'macosx-10.4-intel')

_osx_support._remove_original_values(get_config_vars())
        get_config_vars()['CFLAGS'] = ('-arch x86_64 -arch ppc -arch i386 -isysroot '
                                       '/Developer/SDKs/MacOSX10.4u.sdk  '
                                       '-fno-strict-aliasing -fno-common '
                                       '-dynamic -DNDEBUG -g -O3')
        self.assertEqual(get_platform(), 'macosx-10.4-fat3')

_osx_support._remove_original_values(get_config_vars())
        get_config_vars()['CFLAGS'] = ('-arch ppc64 -arch x86_64 -arch ppc -arch i386 -isysroot '
                                       '/Developer/SDKs/MacOSX10.4u.sdk  '
                                       '-fno-strict-aliasing -fno-common '
                                       '-dynamic -DNDEBUG -g -O3')
        self.assertEqual(get_platform(), 'macosx-10.4-universal')

_osx_support._remove_original_values(get_config_vars())
        get_config_vars()['CFLAGS'] = ('-arch x86_64 -arch ppc64 -isysroot '
                                       '/Developer/SDKs/MacOSX10.4u.sdk  '
                                       '-fno-strict-aliasing -fno-common '
                                       '-dynamic -DNDEBUG -g -O3')

self.assertEqual(get_platform(), 'macosx-10.4-fat64')

for arch in ('ppc', 'i386', 'x86_64', 'ppc64'):
            _osx_support._remove_original_values(get_config_vars())
            get_config_vars()['CFLAGS'] = ('-arch %s -isysroot '
                                           '/Developer/SDKs/MacOSX10.4u.sdk  '
                                           '-fno-strict-aliasing -fno-common '
                                           '-dynamic -DNDEBUG -g -O3'%(arch,))

self.assertEqual(get_platform(), 'macosx-10.4-%s'%(arch,))

# linux debian sarge
        os.name = 'posix'
        sys.version = ('2.3.5 (#1, Jul  4 2007, 17:28:59) '
                       '\n[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)]')
        sys.platform = 'linux2'
        self._set_uname(('Linux', 'aglae', '2.6.21.1dedibox-r7',
                    '#1 Mon Apr 30 17:25:38 CEST 2007', 'i686'))

self.assertEqual(get_platform(), 'linux-i686')

# XXX more platforms to tests here

def test_get_config_h_filename(self):
        config_h = sysconfig.get_config_h_filename()
        self.assertTrue(os.path.isfile(config_h), config_h)

def test_get_scheme_names(self):
        wanted = ('nt', 'nt_user', 'os2', 'os2_home', 'osx_framework_user',
                  'posix_home', 'posix_prefix', 'posix_user')
        self.assertEqual(get_scheme_names(), wanted)

@unittest.skipIf(sys.platform.startswith('win'),
                     'Test is not Windows compatible')
    def test_get_makefile_filename(self):
        makefile = sysconfig.get_makefile_filename()
        self.assertTrue(os.path.isfile(makefile), makefile)
        # Issue 22199
        self.assertEqual(sysconfig._get_makefile_filename(), makefile)

def test_symlink(self):
        # Issue 7880
        symlink = get_attribute(os, "symlink")
        def get(python):
            cmd = [python, '-c',
                   'import sysconfig; print sysconfig.get_platform()']
            p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
            return p.communicate()
        real = os.path.realpath(sys.executable)
        link = os.path.abspath(TESTFN)
        symlink(real, link)
        try:
            self.assertEqual(get(real), get(link))
        finally:
            unlink(link)

def test_user_similar(self):
        # Issue #8759: make sure the posix scheme for the users
        # is similar to the global posix_prefix one
        base = get_config_var('base')
        user = get_config_var('userbase')
        # the global scheme mirrors the distinction between prefix and
        # exec-prefix but not the user scheme, so we have to adapt the paths
        # before comparing (issue #9100)
        adapt = sys.prefix != sys.exec_prefix
        for name in ('stdlib', 'platstdlib', 'purelib', 'platlib'):
            global_path = get_path(name, 'posix_prefix')
            if adapt:
                global_path = global_path.replace(sys.exec_prefix, sys.prefix)
                base = base.replace(sys.exec_prefix, sys.prefix)
            user_path = get_path(name, 'posix_user')
            self.assertEqual(user_path, global_path.replace(base, user, 1))

@unittest.skipUnless(sys.platform == "darwin", "test only relevant on MacOSX")
    def test_platform_in_subprocess(self):
        my_platform = sysconfig.get_platform()

# Test without MACOSX_DEPLOYMENT_TARGET in the environment

env = os.environ.copy()
        if 'MACOSX_DEPLOYMENT_TARGET' in env:
            del env['MACOSX_DEPLOYMENT_TARGET']

with open('/dev/null', 'w') as devnull_fp:
            p = subprocess.Popen([
                    sys.executable, '-c',
                   'import sysconfig; print(sysconfig.get_platform())',
                ],
                stdout=subprocess.PIPE,
                stderr=devnull_fp,
                env=env)
        test_platform = p.communicate()[0].strip()
        test_platform = test_platform.decode('utf-8')
        status = p.wait()

self.assertEqual(status, 0)
        self.assertEqual(my_platform, test_platform)

# Test with MACOSX_DEPLOYMENT_TARGET in the environment, and
        # using a value that is unlikely to be the default one.
        env = os.environ.copy()
        env['MACOSX_DEPLOYMENT_TARGET'] = '10.1'

p = subprocess.Popen([
                sys.executable, '-c',
                'import sysconfig; print(sysconfig.get_platform())',
            ],
            stdout=subprocess.PIPE,
            stderr=open('/dev/null'),
            env=env)
        test_platform = p.communicate()[0].strip()
        test_platform = test_platform.decode('utf-8')
        status = p.wait()

self.assertEqual(status, 0)
        self.assertEqual(my_platform, test_platform)

def test_main():
    run_unittest(TestSysConfig)

if __name__ == "__main__":
    test_main()

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✏️ test_sysconfig.py