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cpython/Lib/test/test_site.py

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"""Tests for 'site'.
Tests assume the initial paths in sys.path once the interpreter has begun
executing have not been removed.
"""
import unittest
import test.support
from test.support import captured_stderr, TESTFN, EnvironmentVarGuard
import builtins
import os
import sys
import re
import encodings
import urllib.request
import urllib.error
import subprocess
import sysconfig
from copy import copy
# These tests are not particularly useful if Python was invoked with -S.
# If you add tests that are useful under -S, this skip should be moved
# to the class level.
if sys.flags.no_site:
raise unittest.SkipTest("Python was invoked with -S")
import site
if site.ENABLE_USER_SITE and not os.path.isdir(site.USER_SITE):
# need to add user site directory for tests
os.makedirs(site.USER_SITE)
site.addsitedir(site.USER_SITE)
class HelperFunctionsTests(unittest.TestCase):
"""Tests for helper functions.
"""
def setUp(self):
"""Save a copy of sys.path"""
self.sys_path = sys.path[:]
self.old_base = site.USER_BASE
self.old_site = site.USER_SITE
self.old_prefixes = site.PREFIXES
self.original_vars = sysconfig._CONFIG_VARS
self.old_vars = copy(sysconfig._CONFIG_VARS)
def tearDown(self):
"""Restore sys.path"""
sys.path[:] = self.sys_path
site.USER_BASE = self.old_base
site.USER_SITE = self.old_site
site.PREFIXES = self.old_prefixes
sysconfig._CONFIG_VARS = self.original_vars
sysconfig._CONFIG_VARS.clear()
sysconfig._CONFIG_VARS.update(self.old_vars)
def test_makepath(self):
# Test makepath() have an absolute path for its first return value
# and a case-normalized version of the absolute path for its
# second value.
path_parts = ("Beginning", "End")
original_dir = os.path.join(*path_parts)
abs_dir, norm_dir = site.makepath(*path_parts)
self.assertEqual(os.path.abspath(original_dir), abs_dir)
if original_dir == os.path.normcase(original_dir):
self.assertEqual(abs_dir, norm_dir)
else:
self.assertEqual(os.path.normcase(abs_dir), norm_dir)
def test_init_pathinfo(self):
dir_set = site._init_pathinfo()
for entry in [site.makepath(path)[1] for path in sys.path
if path and os.path.isdir(path)]:
self.assertIn(entry, dir_set,
"%s from sys.path not found in set returned "
"by _init_pathinfo(): %s" % (entry, dir_set))
def pth_file_tests(self, pth_file):
"""Contain common code for testing results of reading a .pth file"""
self.assertIn(pth_file.imported, sys.modules,
"%s not in sys.modules" % pth_file.imported)
self.assertIn(site.makepath(pth_file.good_dir_path)[0], sys.path)
self.assertFalse(os.path.exists(pth_file.bad_dir_path))
def test_addpackage(self):
# Make sure addpackage() imports if the line starts with 'import',
# adds directories to sys.path for any line in the file that is not a
# comment or import that is a valid directory name for where the .pth
# file resides; invalid directories are not added
pth_file = PthFile()
pth_file.cleanup(prep=True) # to make sure that nothing is
# pre-existing that shouldn't be
try:
pth_file.create()
site.addpackage(pth_file.base_dir, pth_file.filename, set())
self.pth_file_tests(pth_file)
finally:
pth_file.cleanup()
def make_pth(self, contents, pth_dir='.', pth_name=TESTFN):
# Create a .pth file and return its (abspath, basename).
pth_dir = os.path.abspath(pth_dir)
pth_basename = pth_name + '.pth'
pth_fn = os.path.join(pth_dir, pth_basename)
pth_file = open(pth_fn, 'w', encoding='utf-8')
self.addCleanup(lambda: os.remove(pth_fn))
pth_file.write(contents)
pth_file.close()
return pth_dir, pth_basename
def test_addpackage_import_bad_syntax(self):
# Issue 10642
pth_dir, pth_fn = self.make_pth("import bad)syntax\n")
with captured_stderr() as err_out:
site.addpackage(pth_dir, pth_fn, set())
self.assertRegex(err_out.getvalue(), "line 1")
self.assertRegex(err_out.getvalue(),
re.escape(os.path.join(pth_dir, pth_fn)))
# XXX: the previous two should be independent checks so that the
# order doesn't matter. The next three could be a single check
# but my regex foo isn't good enough to write it.
self.assertRegex(err_out.getvalue(), 'Traceback')
self.assertRegex(err_out.getvalue(), r'import bad\)syntax')
self.assertRegex(err_out.getvalue(), 'SyntaxError')
def test_addpackage_import_bad_exec(self):
# Issue 10642
pth_dir, pth_fn = self.make_pth("randompath\nimport nosuchmodule\n")
with captured_stderr() as err_out:
site.addpackage(pth_dir, pth_fn, set())
self.assertRegex(err_out.getvalue(), "line 2")
self.assertRegex(err_out.getvalue(),
re.escape(os.path.join(pth_dir, pth_fn)))
# XXX: ditto previous XXX comment.
self.assertRegex(err_out.getvalue(), 'Traceback')
self.assertRegex(err_out.getvalue(), 'ImportError')
@unittest.skipIf(sys.platform == "win32", "Windows does not raise an "
"error for file paths containing null characters")
def test_addpackage_import_bad_pth_file(self):
# Issue 5258
pth_dir, pth_fn = self.make_pth("abc\x00def\n")
with captured_stderr() as err_out:
site.addpackage(pth_dir, pth_fn, set())
self.assertRegex(err_out.getvalue(), "line 1")
self.assertRegex(err_out.getvalue(),
re.escape(os.path.join(pth_dir, pth_fn)))
# XXX: ditto previous XXX comment.
self.assertRegex(err_out.getvalue(), 'Traceback')
self.assertRegex(err_out.getvalue(), 'TypeError')
def test_addsitedir(self):
# Same tests for test_addpackage since addsitedir() essentially just
# calls addpackage() for every .pth file in the directory
pth_file = PthFile()
pth_file.cleanup(prep=True) # Make sure that nothing is pre-existing
# that is tested for
try:
pth_file.create()
site.addsitedir(pth_file.base_dir, set())
self.pth_file_tests(pth_file)
finally:
pth_file.cleanup()
@unittest.skipUnless(site.ENABLE_USER_SITE, "requires access to PEP 370 "
"user-site (site.ENABLE_USER_SITE)")
def test_s_option(self):
usersite = site.USER_SITE
self.assertIn(usersite, sys.path)
env = os.environ.copy()
rc = subprocess.call([sys.executable, '-c',
'import sys; sys.exit(%r in sys.path)' % usersite],
env=env)
self.assertEqual(rc, 1)
env = os.environ.copy()
rc = subprocess.call([sys.executable, '-s', '-c',
'import sys; sys.exit(%r in sys.path)' % usersite],
env=env)
if usersite == site.getsitepackages()[0]:
self.assertEqual(rc, 1)
else:
self.assertEqual(rc, 0)
env = os.environ.copy()
env["PYTHONNOUSERSITE"] = "1"
rc = subprocess.call([sys.executable, '-c',
'import sys; sys.exit(%r in sys.path)' % usersite],
env=env)
if usersite == site.getsitepackages()[0]:
self.assertEqual(rc, 1)
else:
self.assertEqual(rc, 0)
env = os.environ.copy()
env["PYTHONUSERBASE"] = "/tmp"
rc = subprocess.call([sys.executable, '-c',
'import sys, site; sys.exit(site.USER_BASE.startswith("/tmp"))'],
env=env)
self.assertEqual(rc, 1)
def test_getuserbase(self):
site.USER_BASE = None
user_base = site.getuserbase()
# the call sets site.USER_BASE
self.assertEqual(site.USER_BASE, user_base)
# let's set PYTHONUSERBASE and see if it uses it
site.USER_BASE = None
import sysconfig
sysconfig._CONFIG_VARS = None
with EnvironmentVarGuard() as environ:
environ['PYTHONUSERBASE'] = 'xoxo'
self.assertTrue(site.getuserbase().startswith('xoxo'),
site.getuserbase())
def test_getusersitepackages(self):
site.USER_SITE = None
site.USER_BASE = None
user_site = site.getusersitepackages()
# the call sets USER_BASE *and* USER_SITE
self.assertEqual(site.USER_SITE, user_site)
self.assertTrue(user_site.startswith(site.USER_BASE), user_site)
def test_getsitepackages(self):
site.PREFIXES = ['xoxo']
dirs = site.getsitepackages()
if (sys.platform == "darwin" and
sysconfig.get_config_var("PYTHONFRAMEWORK")):
# OS X framework builds
site.PREFIXES = ['Python.framework']
dirs = site.getsitepackages()
self.assertEqual(len(dirs), 3)
wanted = os.path.join('/Library',
sysconfig.get_config_var("PYTHONFRAMEWORK"),
sys.version[:3],
'site-packages')
self.assertEqual(dirs[2], wanted)
elif os.sep == '/':
# OS X non-framwework builds, Linux, FreeBSD, etc
self.assertEqual(len(dirs), 2)
wanted = os.path.join('xoxo', 'lib', 'python' + sys.version[:3],
'site-packages')
self.assertEqual(dirs[0], wanted)
wanted = os.path.join('xoxo', 'lib', 'site-python')
self.assertEqual(dirs[1], wanted)
else:
# other platforms
self.assertEqual(len(dirs), 2)
self.assertEqual(dirs[0], 'xoxo')
wanted = os.path.join('xoxo', 'lib', 'site-packages')
self.assertEqual(dirs[1], wanted)
class PthFile(object):
"""Helper class for handling testing of .pth files"""
def __init__(self, filename_base=TESTFN, imported="time",
good_dirname="__testdir__", bad_dirname="__bad"):
"""Initialize instance variables"""
self.filename = filename_base + ".pth"
self.base_dir = os.path.abspath('')
self.file_path = os.path.join(self.base_dir, self.filename)
self.imported = imported
self.good_dirname = good_dirname
self.bad_dirname = bad_dirname
self.good_dir_path = os.path.join(self.base_dir, self.good_dirname)
self.bad_dir_path = os.path.join(self.base_dir, self.bad_dirname)
def create(self):
"""Create a .pth file with a comment, blank lines, an ``import
<self.imported>``, a line with self.good_dirname, and a line with
self.bad_dirname.
Creation of the directory for self.good_dir_path (based off of
self.good_dirname) is also performed.
Make sure to call self.cleanup() to undo anything done by this method.
"""
FILE = open(self.file_path, 'w')
try:
print("#import @bad module name", file=FILE)
print("\n", file=FILE)
print("import %s" % self.imported, file=FILE)
print(self.good_dirname, file=FILE)
print(self.bad_dirname, file=FILE)
finally:
FILE.close()
os.mkdir(self.good_dir_path)
def cleanup(self, prep=False):
"""Make sure that the .pth file is deleted, self.imported is not in
sys.modules, and that both self.good_dirname and self.bad_dirname are
not existing directories."""
if os.path.exists(self.file_path):
os.remove(self.file_path)
if prep:
self.imported_module = sys.modules.get(self.imported)
if self.imported_module:
del sys.modules[self.imported]
else:
if self.imported_module:
sys.modules[self.imported] = self.imported_module
if os.path.exists(self.good_dir_path):
os.rmdir(self.good_dir_path)
if os.path.exists(self.bad_dir_path):
os.rmdir(self.bad_dir_path)
class ImportSideEffectTests(unittest.TestCase):
"""Test side-effects from importing 'site'."""
def setUp(self):
"""Make a copy of sys.path"""
self.sys_path = sys.path[:]
def tearDown(self):
"""Restore sys.path"""
sys.path[:] = self.sys_path
def test_abs_paths(self):
# Make sure all imported modules have their __file__ and __cached__
# attributes as absolute paths. Arranging to put the Lib directory on
# PYTHONPATH would cause the os module to have a relative path for
# __file__ if abs_paths() does not get run. sys and builtins (the
# only other modules imported before site.py runs) do not have
# __file__ or __cached__ because they are built-in.
parent = os.path.relpath(os.path.dirname(os.__file__))
env = os.environ.copy()
env['PYTHONPATH'] = parent
code = ('import os, sys',
# use ASCII to avoid locale issues with non-ASCII directories
'os_file = os.__file__.encode("ascii", "backslashreplace")',
r'sys.stdout.buffer.write(os_file + b"\n")',
'os_cached = os.__cached__.encode("ascii", "backslashreplace")',
r'sys.stdout.buffer.write(os_cached + b"\n")')
command = '\n'.join(code)
# First, prove that with -S (no 'import site'), the paths are
# relative.
proc = subprocess.Popen([sys.executable, '-S', '-c', command],
env=env,
stdout=subprocess.PIPE)
stdout, stderr = proc.communicate()
self.assertEqual(proc.returncode, 0)
os__file__, os__cached__ = stdout.splitlines()[:2]
self.assertFalse(os.path.isabs(os__file__))
self.assertFalse(os.path.isabs(os__cached__))
# Now, with 'import site', it works.
proc = subprocess.Popen([sys.executable, '-c', command],
env=env,
stdout=subprocess.PIPE)
stdout, stderr = proc.communicate()
self.assertEqual(proc.returncode, 0)
os__file__, os__cached__ = stdout.splitlines()[:2]
self.assertTrue(os.path.isabs(os__file__))
self.assertTrue(os.path.isabs(os__cached__))
def test_no_duplicate_paths(self):
# No duplicate paths should exist in sys.path
# Handled by removeduppaths()
site.removeduppaths()
seen_paths = set()
for path in sys.path:
self.assertNotIn(path, seen_paths)
seen_paths.add(path)
@unittest.skip('test not implemented')
def test_add_build_dir(self):
# Test that the build directory's Modules directory is used when it
# should be.
# XXX: implement
pass
def test_setting_quit(self):
# 'quit' and 'exit' should be injected into builtins
self.assertTrue(hasattr(builtins, "quit"))
self.assertTrue(hasattr(builtins, "exit"))
def test_setting_copyright(self):
# 'copyright', 'credits', and 'license' should be in builtins
self.assertTrue(hasattr(builtins, "copyright"))
self.assertTrue(hasattr(builtins, "credits"))
self.assertTrue(hasattr(builtins, "license"))
def test_setting_help(self):
# 'help' should be set in builtins
self.assertTrue(hasattr(builtins, "help"))
def test_aliasing_mbcs(self):
if sys.platform == "win32":
import locale
if locale.getdefaultlocale()[1].startswith('cp'):
for value in encodings.aliases.aliases.values():
if value == "mbcs":
break
else:
self.fail("did not alias mbcs")
def test_sitecustomize_executed(self):
# If sitecustomize is available, it should have been imported.
if "sitecustomize" not in sys.modules:
try:
import sitecustomize
except ImportError:
pass
else:
self.fail("sitecustomize not imported automatically")
@test.support.requires_resource('network')
@unittest.skipUnless(sys.version_info[3] == 'final',
'only for released versions')
def test_license_exists_at_url(self):
# This test is a bit fragile since it depends on the format of the
# string displayed by license in the absence of a LICENSE file.
url = license._Printer__data.split()[1]
req = urllib.request.Request(url, method='HEAD')
try:
with test.support.transient_internet(url):
with urllib.request.urlopen(req) as data:
code = data.getcode()
except urllib.error.HTTPError as e:
code = e.code
self.assertEqual(code, 200, msg="Can't find " + url)
class StartupImportTests(unittest.TestCase):
def test_startup_imports(self):
# This tests checks which modules are loaded by Python when it
# initially starts upon startup.
popen = subprocess.Popen([sys.executable, '-I', '-v', '-c',
'import sys; print(set(sys.modules))'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = popen.communicate()
stdout = stdout.decode('utf-8')
stderr = stderr.decode('utf-8')
modules = eval(stdout)
self.assertIn('site', modules)
# http://bugs.python.org/issue19205
re_mods = {'re', '_sre', 'sre_compile', 'sre_constants', 'sre_parse'}
# _osx_support uses the re module in many placs
if sys.platform != 'darwin':
self.assertFalse(modules.intersection(re_mods), stderr)
# http://bugs.python.org/issue9548
self.assertNotIn('locale', modules, stderr)
if sys.platform != 'darwin':
# http://bugs.python.org/issue19209
self.assertNotIn('copyreg', modules, stderr)
# http://bugs.python.org/issue19218>
collection_mods = {'_collections', 'collections', 'functools',
'heapq', 'itertools', 'keyword', 'operator',
'reprlib', 'types', 'weakref'}
self.assertFalse(modules.intersection(collection_mods), stderr)
if __name__ == "__main__":
unittest.main()
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