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"""Tests for distutils.sysconfig."""
import os
import test
import unittest
import shutil
import subprocess
import sys
import textwrap
from distutils import sysconfig
from distutils.ccompiler import get_default_compiler
from distutils.tests import support
from test.test_support import TESTFN, swap_item
class SysconfigTestCase(support.EnvironGuard,
unittest.TestCase):
def setUp(self):
super(SysconfigTestCase, self).setUp()
self.makefile = None
def tearDown(self):
if self.makefile is not None:
os.unlink(self.makefile)
self.cleanup_testfn()
super(SysconfigTestCase, self).tearDown()
def cleanup_testfn(self):
path = test.test_support.TESTFN
if os.path.isfile(path):
os.remove(path)
elif os.path.isdir(path):
shutil.rmtree(path)
def test_get_python_lib(self):
lib_dir = sysconfig.get_python_lib()
# XXX doesn't work on Linux when Python was never installed before
#self.assertTrue(os.path.isdir(lib_dir), lib_dir)
# test for pythonxx.lib?
self.assertNotEqual(sysconfig.get_python_lib(),
sysconfig.get_python_lib(prefix=TESTFN))
_sysconfig = __import__('sysconfig')
res = sysconfig.get_python_lib(True, True)
self.assertEqual(_sysconfig.get_path('platstdlib'), res)
def test_get_python_inc(self):
inc_dir = sysconfig.get_python_inc()
# This is not much of a test. We make sure Python.h exists
# in the directory returned by get_python_inc() but we don't know
# it is the correct file.
self.assertTrue(os.path.isdir(inc_dir), inc_dir)
python_h = os.path.join(inc_dir, "Python.h")
self.assertTrue(os.path.isfile(python_h), python_h)
def customize_compiler(self):
# make sure AR gets caught
class compiler:
compiler_type = 'unix'
def set_executables(self, **kw):
self.exes = kw
sysconfig_vars = {
'AR': 'sc_ar',
'CC': 'sc_cc',
'CXX': 'sc_cxx',
'ARFLAGS': '--sc-arflags',
'CFLAGS': '--sc-cflags',
'CCSHARED': '--sc-ccshared',
'LDSHARED': 'sc_ldshared',
'SO': 'sc_shutil_suffix',
}
comp = compiler()
old_vars = dict(sysconfig._config_vars)
try:
# On macOS, disable _osx_support.customize_compiler()
sysconfig._config_vars['CUSTOMIZED_OSX_COMPILER'] = 'True'
for key, value in sysconfig_vars.items():
sysconfig._config_vars[key] = value
sysconfig.customize_compiler(comp)
finally:
sysconfig._config_vars.clear()
sysconfig._config_vars.update(old_vars)
return comp
@unittest.skipUnless(get_default_compiler() == 'unix',
'not testing if default compiler is not unix')
def test_customize_compiler(self):
# Make sure that sysconfig._config_vars is initialized
sysconfig.get_config_vars()
os.environ['AR'] = 'env_ar'
os.environ['CC'] = 'env_cc'
os.environ['CPP'] = 'env_cpp'
os.environ['CXX'] = 'env_cxx --env-cxx-flags'
os.environ['LDSHARED'] = 'env_ldshared'
os.environ['LDFLAGS'] = '--env-ldflags'
os.environ['ARFLAGS'] = '--env-arflags'
os.environ['CFLAGS'] = '--env-cflags'
os.environ['CPPFLAGS'] = '--env-cppflags'
comp = self.customize_compiler()
self.assertEqual(comp.exes['archiver'],
'env_ar --env-arflags')
self.assertEqual(comp.exes['preprocessor'],
'env_cpp --env-cppflags')
self.assertEqual(comp.exes['compiler'],
'env_cc --sc-cflags --env-cflags --env-cppflags')
self.assertEqual(comp.exes['compiler_so'],
('env_cc --sc-cflags '
'--env-cflags ''--env-cppflags --sc-ccshared'))
self.assertEqual(comp.exes['compiler_cxx'],
'env_cxx --env-cxx-flags')
self.assertEqual(comp.exes['linker_exe'],
'env_cc')
self.assertEqual(comp.exes['linker_so'],
('env_ldshared --env-ldflags --env-cflags'
' --env-cppflags'))
self.assertEqual(comp.shared_lib_extension, 'sc_shutil_suffix')
del os.environ['AR']
del os.environ['CC']
del os.environ['CPP']
del os.environ['CXX']
del os.environ['LDSHARED']
del os.environ['LDFLAGS']
del os.environ['ARFLAGS']
del os.environ['CFLAGS']
del os.environ['CPPFLAGS']
comp = self.customize_compiler()
self.assertEqual(comp.exes['archiver'],
'sc_ar --sc-arflags')
self.assertEqual(comp.exes['preprocessor'],
'sc_cc -E')
self.assertEqual(comp.exes['compiler'],
'sc_cc --sc-cflags')
self.assertEqual(comp.exes['compiler_so'],
'sc_cc --sc-cflags --sc-ccshared')
self.assertEqual(comp.exes['compiler_cxx'],
'sc_cxx')
self.assertEqual(comp.exes['linker_exe'],
'sc_cc')
self.assertEqual(comp.exes['linker_so'],
'sc_ldshared')
self.assertEqual(comp.shared_lib_extension, 'sc_shutil_suffix')
def test_parse_makefile_base(self):
self.makefile = test.test_support.TESTFN
fd = open(self.makefile, 'w')
try:
fd.write(r"CONFIG_ARGS= '--arg1=optarg1' 'ENV=LIB'" '\n')
fd.write('VAR=$OTHER\nOTHER=foo')
finally:
fd.close()
d = sysconfig.parse_makefile(self.makefile)
self.assertEqual(d, {'CONFIG_ARGS': "'--arg1=optarg1' 'ENV=LIB'",
'OTHER': 'foo'})
def test_parse_makefile_literal_dollar(self):
self.makefile = test.test_support.TESTFN
fd = open(self.makefile, 'w')
try:
fd.write(r"CONFIG_ARGS= '--arg1=optarg1' 'ENV=\$$LIB'" '\n')
fd.write('VAR=$OTHER\nOTHER=foo')
finally:
fd.close()
d = sysconfig.parse_makefile(self.makefile)
self.assertEqual(d, {'CONFIG_ARGS': r"'--arg1=optarg1' 'ENV=\$LIB'",
'OTHER': 'foo'})
def test_sysconfig_module(self):
import sysconfig as global_sysconfig
self.assertEqual(global_sysconfig.get_config_var('CFLAGS'), sysconfig.get_config_var('CFLAGS'))
self.assertEqual(global_sysconfig.get_config_var('LDFLAGS'), sysconfig.get_config_var('LDFLAGS'))
@unittest.skipIf(sysconfig.get_config_var('CUSTOMIZED_OSX_COMPILER'),'compiler flags customized')
def test_sysconfig_compiler_vars(self):
# On OS X, binary installers support extension module building on
# various levels of the operating system with differing Xcode
# configurations. This requires customization of some of the
# compiler configuration directives to suit the environment on
# the installed machine. Some of these customizations may require
# running external programs and, so, are deferred until needed by
# the first extension module build. With Python 3.3, only
# the Distutils version of sysconfig is used for extension module
# builds, which happens earlier in the Distutils tests. This may
# cause the following tests to fail since no tests have caused
# the global version of sysconfig to call the customization yet.
# The solution for now is to simply skip this test in this case.
# The longer-term solution is to only have one version of sysconfig.
import sysconfig as global_sysconfig
if sysconfig.get_config_var('CUSTOMIZED_OSX_COMPILER'):
self.skipTest('compiler flags customized')
self.assertEqual(global_sysconfig.get_config_var('LDSHARED'), sysconfig.get_config_var('LDSHARED'))
self.assertEqual(global_sysconfig.get_config_var('CC'), sysconfig.get_config_var('CC'))
def test_customize_compiler_before_get_config_vars(self):
# Issue #21923: test that a Distribution compiler
# instance can be called without an explicit call to
# get_config_vars().
with open(TESTFN, 'w') as f:
f.writelines(textwrap.dedent('''\
from distutils.core import Distribution
config = Distribution().get_command_obj('config')
# try_compile may pass or it may fail if no compiler
# is found but it should not raise an exception.
rc = config.try_compile('int x;')
'''))
p = subprocess.Popen([str(sys.executable), TESTFN],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
outs, errs = p.communicate()
self.assertEqual(0, p.returncode, "Subprocess failed: " + outs)
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(SysconfigTestCase))
return suite
if __name__ == '__main__':
test.test_support.run_unittest(test_suite())
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