You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
461 lines
18 KiB
461 lines
18 KiB
3 years ago
|
import importlib
|
||
|
|
import importlib.util
|
||
|
|
import os
|
||
|
|
import os.path
|
||
|
|
import py_compile
|
||
|
|
import sys
|
||
|
|
from test import support
|
||
|
|
from test.support import import_helper
|
||
|
|
from test.support import os_helper
|
||
|
|
from test.support import script_helper
|
||
|
|
import unittest
|
||
|
|
import warnings
|
||
|
|
with warnings.catch_warnings():
|
||
|
|
warnings.simplefilter('ignore', DeprecationWarning)
|
||
|
|
import imp
|
||
|
|
import _imp
|
||
|
|
|
||
|
|
|
||
|
|
def requires_load_dynamic(meth):
|
||
|
|
"""Decorator to skip a test if not running under CPython or lacking
|
||
|
|
imp.load_dynamic()."""
|
||
|
|
meth = support.cpython_only(meth)
|
||
|
|
return unittest.skipIf(not hasattr(imp, 'load_dynamic'),
|
||
|
|
'imp.load_dynamic() required')(meth)
|
||
|
|
|
||
|
|
|
||
|
|
class LockTests(unittest.TestCase):
|
||
|
|
|
||
|
|
"""Very basic test of import lock functions."""
|
||
|
|
|
||
|
|
def verify_lock_state(self, expected):
|
||
|
|
self.assertEqual(imp.lock_held(), expected,
|
||
|
|
"expected imp.lock_held() to be %r" % expected)
|
||
|
|
def testLock(self):
|
||
|
|
LOOPS = 50
|
||
|
|
|
||
|
|
# The import lock may already be held, e.g. if the test suite is run
|
||
|
|
# via "import test.autotest".
|
||
|
|
lock_held_at_start = imp.lock_held()
|
||
|
|
self.verify_lock_state(lock_held_at_start)
|
||
|
|
|
||
|
|
for i in range(LOOPS):
|
||
|
|
imp.acquire_lock()
|
||
|
|
self.verify_lock_state(True)
|
||
|
|
|
||
|
|
for i in range(LOOPS):
|
||
|
|
imp.release_lock()
|
||
|
|
|
||
|
|
# The original state should be restored now.
|
||
|
|
self.verify_lock_state(lock_held_at_start)
|
||
|
|
|
||
|
|
if not lock_held_at_start:
|
||
|
|
try:
|
||
|
|
imp.release_lock()
|
||
|
|
except RuntimeError:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
self.fail("release_lock() without lock should raise "
|
||
|
|
"RuntimeError")
|
||
|
|
|
||
|
|
class ImportTests(unittest.TestCase):
|
||
|
|
def setUp(self):
|
||
|
|
mod = importlib.import_module('test.encoded_modules')
|
||
|
|
self.test_strings = mod.test_strings
|
||
|
|
self.test_path = mod.__path__
|
||
|
|
|
||
|
|
def test_import_encoded_module(self):
|
||
|
|
for modname, encoding, teststr in self.test_strings:
|
||
|
|
mod = importlib.import_module('test.encoded_modules.'
|
||
|
|
'module_' + modname)
|
||
|
|
self.assertEqual(teststr, mod.test)
|
||
|
|
|
||
|
|
def test_find_module_encoding(self):
|
||
|
|
for mod, encoding, _ in self.test_strings:
|
||
|
|
with imp.find_module('module_' + mod, self.test_path)[0] as fd:
|
||
|
|
self.assertEqual(fd.encoding, encoding)
|
||
|
|
|
||
|
|
path = [os.path.dirname(__file__)]
|
||
|
|
with self.assertRaises(SyntaxError):
|
||
|
|
imp.find_module('badsyntax_pep3120', path)
|
||
|
|
|
||
|
|
def test_issue1267(self):
|
||
|
|
for mod, encoding, _ in self.test_strings:
|
||
|
|
fp, filename, info = imp.find_module('module_' + mod,
|
||
|
|
self.test_path)
|
||
|
|
with fp:
|
||
|
|
self.assertNotEqual(fp, None)
|
||
|
|
self.assertEqual(fp.encoding, encoding)
|
||
|
|
self.assertEqual(fp.tell(), 0)
|
||
|
|
self.assertEqual(fp.readline(), '# test %s encoding\n'
|
||
|
|
% encoding)
|
||
|
|
|
||
|
|
fp, filename, info = imp.find_module("tokenize")
|
||
|
|
with fp:
|
||
|
|
self.assertNotEqual(fp, None)
|
||
|
|
self.assertEqual(fp.encoding, "utf-8")
|
||
|
|
self.assertEqual(fp.tell(), 0)
|
||
|
|
self.assertEqual(fp.readline(),
|
||
|
|
'"""Tokenization help for Python programs.\n')
|
||
|
|
|
||
|
|
def test_issue3594(self):
|
||
|
|
temp_mod_name = 'test_imp_helper'
|
||
|
|
sys.path.insert(0, '.')
|
||
|
|
try:
|
||
|
|
with open(temp_mod_name + '.py', 'w', encoding="latin-1") as file:
|
||
|
|
file.write("# coding: cp1252\nu = 'test.test_imp'\n")
|
||
|
|
file, filename, info = imp.find_module(temp_mod_name)
|
||
|
|
file.close()
|
||
|
|
self.assertEqual(file.encoding, 'cp1252')
|
||
|
|
finally:
|
||
|
|
del sys.path[0]
|
||
|
|
os_helper.unlink(temp_mod_name + '.py')
|
||
|
|
os_helper.unlink(temp_mod_name + '.pyc')
|
||
|
|
|
||
|
|
def test_issue5604(self):
|
||
|
|
# Test cannot cover imp.load_compiled function.
|
||
|
|
# Martin von Loewis note what shared library cannot have non-ascii
|
||
|
|
# character because init_xxx function cannot be compiled
|
||
|
|
# and issue never happens for dynamic modules.
|
||
|
|
# But sources modified to follow generic way for processing paths.
|
||
|
|
|
||
|
|
# the return encoding could be uppercase or None
|
||
|
|
fs_encoding = sys.getfilesystemencoding()
|
||
|
|
|
||
|
|
# covers utf-8 and Windows ANSI code pages
|
||
|
|
# one non-space symbol from every page
|
||
|
|
# (http://en.wikipedia.org/wiki/Code_page)
|
||
|
|
known_locales = {
|
||
|
|
'utf-8' : b'\xc3\xa4',
|
||
|
|
'cp1250' : b'\x8C',
|
||
|
|
'cp1251' : b'\xc0',
|
||
|
|
'cp1252' : b'\xc0',
|
||
|
|
'cp1253' : b'\xc1',
|
||
|
|
'cp1254' : b'\xc0',
|
||
|
|
'cp1255' : b'\xe0',
|
||
|
|
'cp1256' : b'\xe0',
|
||
|
|
'cp1257' : b'\xc0',
|
||
|
|
'cp1258' : b'\xc0',
|
||
|
|
}
|
||
|
|
|
||
|
|
if sys.platform == 'darwin':
|
||
|
|
self.assertEqual(fs_encoding, 'utf-8')
|
||
|
|
# Mac OS X uses the Normal Form D decomposition
|
||
|
|
# http://developer.apple.com/mac/library/qa/qa2001/qa1173.html
|
||
|
|
special_char = b'a\xcc\x88'
|
||
|
|
else:
|
||
|
|
special_char = known_locales.get(fs_encoding)
|
||
|
|
|
||
|
|
if not special_char:
|
||
|
|
self.skipTest("can't run this test with %s as filesystem encoding"
|
||
|
|
% fs_encoding)
|
||
|
|
decoded_char = special_char.decode(fs_encoding)
|
||
|
|
temp_mod_name = 'test_imp_helper_' + decoded_char
|
||
|
|
test_package_name = 'test_imp_helper_package_' + decoded_char
|
||
|
|
init_file_name = os.path.join(test_package_name, '__init__.py')
|
||
|
|
try:
|
||
|
|
# if the curdir is not in sys.path the test fails when run with
|
||
|
|
# ./python ./Lib/test/regrtest.py test_imp
|
||
|
|
sys.path.insert(0, os.curdir)
|
||
|
|
with open(temp_mod_name + '.py', 'w', encoding="utf-8") as file:
|
||
|
|
file.write('a = 1\n')
|
||
|
|
file, filename, info = imp.find_module(temp_mod_name)
|
||
|
|
with file:
|
||
|
|
self.assertIsNotNone(file)
|
||
|
|
self.assertTrue(filename[:-3].endswith(temp_mod_name))
|
||
|
|
self.assertEqual(info[0], '.py')
|
||
|
|
self.assertEqual(info[1], 'r')
|
||
|
|
self.assertEqual(info[2], imp.PY_SOURCE)
|
||
|
|
|
||
|
|
mod = imp.load_module(temp_mod_name, file, filename, info)
|
||
|
|
self.assertEqual(mod.a, 1)
|
||
|
|
|
||
|
|
with warnings.catch_warnings():
|
||
|
|
warnings.simplefilter('ignore')
|
||
|
|
mod = imp.load_source(temp_mod_name, temp_mod_name + '.py')
|
||
|
|
self.assertEqual(mod.a, 1)
|
||
|
|
|
||
|
|
with warnings.catch_warnings():
|
||
|
|
warnings.simplefilter('ignore')
|
||
|
|
if not sys.dont_write_bytecode:
|
||
|
|
mod = imp.load_compiled(
|
||
|
|
temp_mod_name,
|
||
|
|
imp.cache_from_source(temp_mod_name + '.py'))
|
||
|
|
self.assertEqual(mod.a, 1)
|
||
|
|
|
||
|
|
if not os.path.exists(test_package_name):
|
||
|
|
os.mkdir(test_package_name)
|
||
|
|
with open(init_file_name, 'w', encoding="utf-8") as file:
|
||
|
|
file.write('b = 2\n')
|
||
|
|
with warnings.catch_warnings():
|
||
|
|
warnings.simplefilter('ignore')
|
||
|
|
package = imp.load_package(test_package_name, test_package_name)
|
||
|
|
self.assertEqual(package.b, 2)
|
||
|
|
finally:
|
||
|
|
del sys.path[0]
|
||
|
|
for ext in ('.py', '.pyc'):
|
||
|
|
os_helper.unlink(temp_mod_name + ext)
|
||
|
|
os_helper.unlink(init_file_name + ext)
|
||
|
|
os_helper.rmtree(test_package_name)
|
||
|
|
os_helper.rmtree('__pycache__')
|
||
|
|
|
||
|
|
def test_issue9319(self):
|
||
|
|
path = os.path.dirname(__file__)
|
||
|
|
self.assertRaises(SyntaxError,
|
||
|
|
imp.find_module, "badsyntax_pep3120", [path])
|
||
|
|
|
||
|
|
def test_load_from_source(self):
|
||
|
|
# Verify that the imp module can correctly load and find .py files
|
||
|
|
# XXX (ncoghlan): It would be nice to use import_helper.CleanImport
|
||
|
|
# here, but that breaks because the os module registers some
|
||
|
|
# handlers in copy_reg on import. Since CleanImport doesn't
|
||
|
|
# revert that registration, the module is left in a broken
|
||
|
|
# state after reversion. Reinitialising the module contents
|
||
|
|
# and just reverting os.environ to its previous state is an OK
|
||
|
|
# workaround
|
||
|
|
orig_path = os.path
|
||
|
|
orig_getenv = os.getenv
|
||
|
|
with os_helper.EnvironmentVarGuard():
|
||
|
|
x = imp.find_module("os")
|
||
|
|
self.addCleanup(x[0].close)
|
||
|
|
new_os = imp.load_module("os", *x)
|
||
|
|
self.assertIs(os, new_os)
|
||
|
|
self.assertIs(orig_path, new_os.path)
|
||
|
|
self.assertIsNot(orig_getenv, new_os.getenv)
|
||
|
|
|
||
|
|
@requires_load_dynamic
|
||
|
|
def test_issue15828_load_extensions(self):
|
||
|
|
# Issue 15828 picked up that the adapter between the old imp API
|
||
|
|
# and importlib couldn't handle C extensions
|
||
|
|
example = "_heapq"
|
||
|
|
x = imp.find_module(example)
|
||
|
|
file_ = x[0]
|
||
|
|
if file_ is not None:
|
||
|
|
self.addCleanup(file_.close)
|
||
|
|
mod = imp.load_module(example, *x)
|
||
|
|
self.assertEqual(mod.__name__, example)
|
||
|
|
|
||
|
|
@requires_load_dynamic
|
||
|
|
def test_issue16421_multiple_modules_in_one_dll(self):
|
||
|
|
# Issue 16421: loading several modules from the same compiled file fails
|
||
|
|
m = '_testimportmultiple'
|
||
|
|
fileobj, pathname, description = imp.find_module(m)
|
||
|
|
fileobj.close()
|
||
|
|
mod0 = imp.load_dynamic(m, pathname)
|
||
|
|
mod1 = imp.load_dynamic('_testimportmultiple_foo', pathname)
|
||
|
|
mod2 = imp.load_dynamic('_testimportmultiple_bar', pathname)
|
||
|
|
self.assertEqual(mod0.__name__, m)
|
||
|
|
self.assertEqual(mod1.__name__, '_testimportmultiple_foo')
|
||
|
|
self.assertEqual(mod2.__name__, '_testimportmultiple_bar')
|
||
|
|
with self.assertRaises(ImportError):
|
||
|
|
imp.load_dynamic('nonexistent', pathname)
|
||
|
|
|
||
|
|
@requires_load_dynamic
|
||
|
|
def test_load_dynamic_ImportError_path(self):
|
||
|
|
# Issue #1559549 added `name` and `path` attributes to ImportError
|
||
|
|
# in order to provide better detail. Issue #10854 implemented those
|
||
|
|
# attributes on import failures of extensions on Windows.
|
||
|
|
path = 'bogus file path'
|
||
|
|
name = 'extension'
|
||
|
|
with self.assertRaises(ImportError) as err:
|
||
|
|
imp.load_dynamic(name, path)
|
||
|
|
self.assertIn(path, err.exception.path)
|
||
|
|
self.assertEqual(name, err.exception.name)
|
||
|
|
|
||
|
|
@requires_load_dynamic
|
||
|
|
def test_load_module_extension_file_is_None(self):
|
||
|
|
# When loading an extension module and the file is None, open one
|
||
|
|
# on the behalf of imp.load_dynamic().
|
||
|
|
# Issue #15902
|
||
|
|
name = '_testimportmultiple'
|
||
|
|
found = imp.find_module(name)
|
||
|
|
if found[0] is not None:
|
||
|
|
found[0].close()
|
||
|
|
if found[2][2] != imp.C_EXTENSION:
|
||
|
|
self.skipTest("found module doesn't appear to be a C extension")
|
||
|
|
imp.load_module(name, None, *found[1:])
|
||
|
|
|
||
|
|
@requires_load_dynamic
|
||
|
|
def test_issue24748_load_module_skips_sys_modules_check(self):
|
||
|
|
name = 'test.imp_dummy'
|
||
|
|
try:
|
||
|
|
del sys.modules[name]
|
||
|
|
except KeyError:
|
||
|
|
pass
|
||
|
|
try:
|
||
|
|
module = importlib.import_module(name)
|
||
|
|
spec = importlib.util.find_spec('_testmultiphase')
|
||
|
|
module = imp.load_dynamic(name, spec.origin)
|
||
|
|
self.assertEqual(module.__name__, name)
|
||
|
|
self.assertEqual(module.__spec__.name, name)
|
||
|
|
self.assertEqual(module.__spec__.origin, spec.origin)
|
||
|
|
self.assertRaises(AttributeError, getattr, module, 'dummy_name')
|
||
|
|
self.assertEqual(module.int_const, 1969)
|
||
|
|
self.assertIs(sys.modules[name], module)
|
||
|
|
finally:
|
||
|
|
try:
|
||
|
|
del sys.modules[name]
|
||
|
|
except KeyError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
@unittest.skipIf(sys.dont_write_bytecode,
|
||
|
|
"test meaningful only when writing bytecode")
|
||
|
|
def test_bug7732(self):
|
||
|
|
with os_helper.temp_cwd():
|
||
|
|
source = os_helper.TESTFN + '.py'
|
||
|
|
os.mkdir(source)
|
||
|
|
self.assertRaisesRegex(ImportError, '^No module',
|
||
|
|
imp.find_module, os_helper.TESTFN, ["."])
|
||
|
|
|
||
|
|
def test_multiple_calls_to_get_data(self):
|
||
|
|
# Issue #18755: make sure multiple calls to get_data() can succeed.
|
||
|
|
loader = imp._LoadSourceCompatibility('imp', imp.__file__,
|
||
|
|
open(imp.__file__, encoding="utf-8"))
|
||
|
|
loader.get_data(imp.__file__) # File should be closed
|
||
|
|
loader.get_data(imp.__file__) # Will need to create a newly opened file
|
||
|
|
|
||
|
|
def test_load_source(self):
|
||
|
|
# Create a temporary module since load_source(name) modifies
|
||
|
|
# sys.modules[name] attributes like __loader___
|
||
|
|
modname = f"tmp{__name__}"
|
||
|
|
mod = type(sys.modules[__name__])(modname)
|
||
|
|
with support.swap_item(sys.modules, modname, mod):
|
||
|
|
with self.assertRaisesRegex(ValueError, 'embedded null'):
|
||
|
|
imp.load_source(modname, __file__ + "\0")
|
||
|
|
|
||
|
|
@support.cpython_only
|
||
|
|
def test_issue31315(self):
|
||
|
|
# There shouldn't be an assertion failure in imp.create_dynamic(),
|
||
|
|
# when spec.name is not a string.
|
||
|
|
create_dynamic = support.get_attribute(imp, 'create_dynamic')
|
||
|
|
class BadSpec:
|
||
|
|
name = None
|
||
|
|
origin = 'foo'
|
||
|
|
with self.assertRaises(TypeError):
|
||
|
|
create_dynamic(BadSpec())
|
||
|
|
|
||
|
|
def test_issue_35321(self):
|
||
|
|
# Both _frozen_importlib and _frozen_importlib_external
|
||
|
|
# should have a spec origin of "frozen" and
|
||
|
|
# no need to clean up imports in this case.
|
||
|
|
|
||
|
|
import _frozen_importlib_external
|
||
|
|
self.assertEqual(_frozen_importlib_external.__spec__.origin, "frozen")
|
||
|
|
|
||
|
|
import _frozen_importlib
|
||
|
|
self.assertEqual(_frozen_importlib.__spec__.origin, "frozen")
|
||
|
|
|
||
|
|
def test_source_hash(self):
|
||
|
|
self.assertEqual(_imp.source_hash(42, b'hi'), b'\xc6\xe7Z\r\x03:}\xab')
|
||
|
|
self.assertEqual(_imp.source_hash(43, b'hi'), b'\x85\x9765\xf8\x9a\x8b9')
|
||
|
|
|
||
|
|
def test_pyc_invalidation_mode_from_cmdline(self):
|
||
|
|
cases = [
|
||
|
|
([], "default"),
|
||
|
|
(["--check-hash-based-pycs", "default"], "default"),
|
||
|
|
(["--check-hash-based-pycs", "always"], "always"),
|
||
|
|
(["--check-hash-based-pycs", "never"], "never"),
|
||
|
|
]
|
||
|
|
for interp_args, expected in cases:
|
||
|
|
args = interp_args + [
|
||
|
|
"-c",
|
||
|
|
"import _imp; print(_imp.check_hash_based_pycs)",
|
||
|
|
]
|
||
|
|
res = script_helper.assert_python_ok(*args)
|
||
|
|
self.assertEqual(res.out.strip().decode('utf-8'), expected)
|
||
|
|
|
||
|
|
def test_find_and_load_checked_pyc(self):
|
||
|
|
# issue 34056
|
||
|
|
with os_helper.temp_cwd():
|
||
|
|
with open('mymod.py', 'wb') as fp:
|
||
|
|
fp.write(b'x = 42\n')
|
||
|
|
py_compile.compile(
|
||
|
|
'mymod.py',
|
||
|
|
doraise=True,
|
||
|
|
invalidation_mode=py_compile.PycInvalidationMode.CHECKED_HASH,
|
||
|
|
)
|
||
|
|
file, path, description = imp.find_module('mymod', path=['.'])
|
||
|
|
mod = imp.load_module('mymod', file, path, description)
|
||
|
|
self.assertEqual(mod.x, 42)
|
||
|
|
|
||
|
|
|
||
|
|
class ReloadTests(unittest.TestCase):
|
||
|
|
|
||
|
|
"""Very basic tests to make sure that imp.reload() operates just like
|
||
|
|
reload()."""
|
||
|
|
|
||
|
|
def test_source(self):
|
||
|
|
# XXX (ncoghlan): It would be nice to use test.import_helper.CleanImport
|
||
|
|
# here, but that breaks because the os module registers some
|
||
|
|
# handlers in copy_reg on import. Since CleanImport doesn't
|
||
|
|
# revert that registration, the module is left in a broken
|
||
|
|
# state after reversion. Reinitialising the module contents
|
||
|
|
# and just reverting os.environ to its previous state is an OK
|
||
|
|
# workaround
|
||
|
|
with os_helper.EnvironmentVarGuard():
|
||
|
|
import os
|
||
|
|
imp.reload(os)
|
||
|
|
|
||
|
|
def test_extension(self):
|
||
|
|
with import_helper.CleanImport('time'):
|
||
|
|
import time
|
||
|
|
imp.reload(time)
|
||
|
|
|
||
|
|
def test_builtin(self):
|
||
|
|
with import_helper.CleanImport('marshal'):
|
||
|
|
import marshal
|
||
|
|
imp.reload(marshal)
|
||
|
|
|
||
|
|
def test_with_deleted_parent(self):
|
||
|
|
# see #18681
|
||
|
|
from html import parser
|
||
|
|
html = sys.modules.pop('html')
|
||
|
|
def cleanup():
|
||
|
|
sys.modules['html'] = html
|
||
|
|
self.addCleanup(cleanup)
|
||
|
|
with self.assertRaisesRegex(ImportError, 'html'):
|
||
|
|
imp.reload(parser)
|
||
|
|
|
||
|
|
|
||
|
|
class PEP3147Tests(unittest.TestCase):
|
||
|
|
"""Tests of PEP 3147."""
|
||
|
|
|
||
|
|
tag = imp.get_tag()
|
||
|
|
|
||
|
|
@unittest.skipUnless(sys.implementation.cache_tag is not None,
|
||
|
|
'requires sys.implementation.cache_tag not be None')
|
||
|
|
def test_cache_from_source(self):
|
||
|
|
# Given the path to a .py file, return the path to its PEP 3147
|
||
|
|
# defined .pyc file (i.e. under __pycache__).
|
||
|
|
path = os.path.join('foo', 'bar', 'baz', 'qux.py')
|
||
|
|
expect = os.path.join('foo', 'bar', 'baz', '__pycache__',
|
||
|
|
'qux.{}.pyc'.format(self.tag))
|
||
|
|
self.assertEqual(imp.cache_from_source(path, True), expect)
|
||
|
|
|
||
|
|
@unittest.skipUnless(sys.implementation.cache_tag is not None,
|
||
|
|
'requires sys.implementation.cache_tag to not be '
|
||
|
|
'None')
|
||
|
|
def test_source_from_cache(self):
|
||
|
|
# Given the path to a PEP 3147 defined .pyc file, return the path to
|
||
|
|
# its source. This tests the good path.
|
||
|
|
path = os.path.join('foo', 'bar', 'baz', '__pycache__',
|
||
|
|
'qux.{}.pyc'.format(self.tag))
|
||
|
|
expect = os.path.join('foo', 'bar', 'baz', 'qux.py')
|
||
|
|
self.assertEqual(imp.source_from_cache(path), expect)
|
||
|
|
|
||
|
|
|
||
|
|
class NullImporterTests(unittest.TestCase):
|
||
|
|
@unittest.skipIf(os_helper.TESTFN_UNENCODABLE is None,
|
||
|
|
"Need an undecodeable filename")
|
||
|
|
def test_unencodeable(self):
|
||
|
|
name = os_helper.TESTFN_UNENCODABLE
|
||
|
|
os.mkdir(name)
|
||
|
|
try:
|
||
|
|
self.assertRaises(ImportError, imp.NullImporter, name)
|
||
|
|
finally:
|
||
|
|
os.rmdir(name)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
unittest.main()
|