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import unittest
from test import support
from test.support import warnings_helper
import os
import sys
import types
try:
import _multiprocessing
except ModuleNotFoundError:
_multiprocessing = None
if support.check_sanitizer(address=True, memory=True):
# bpo-46633: test___all__ is skipped because importing some modules
# directly can trigger known problems with ASAN (like tk or crypt).
raise unittest.SkipTest("workaround ASAN build issues on loading tests "
"like tk or crypt")
class NoAll(RuntimeError):
pass
class FailedImport(RuntimeError):
pass
class AllTest(unittest.TestCase):
def setUp(self):
# concurrent.futures uses a __getattr__ hook. Its __all__ triggers
# import of a submodule, which fails when _multiprocessing is not
# available.
if _multiprocessing is None:
sys.modules["_multiprocessing"] = types.ModuleType("_multiprocessing")
def tearDown(self):
if _multiprocessing is None:
sys.modules.pop("_multiprocessing")
def check_all(self, modname):
names = {}
with warnings_helper.check_warnings(
(f".*{modname}", DeprecationWarning),
(".* (module|package)", DeprecationWarning),
(".* (module|package)", PendingDeprecationWarning),
("", ResourceWarning),
quiet=True):
try:
exec("import %s" % modname, names)
except:
# Silent fail here seems the best route since some modules
# may not be available or not initialize properly in all
# environments.
raise FailedImport(modname)
if not hasattr(sys.modules[modname], "__all__"):
raise NoAll(modname)
names = {}
with self.subTest(module=modname):
with warnings_helper.check_warnings(
("", DeprecationWarning),
("", ResourceWarning),
quiet=True):
try:
exec("from %s import *" % modname, names)
except Exception as e:
# Include the module name in the exception string
self.fail("__all__ failure in {}: {}: {}".format(
modname, e.__class__.__name__, e))
if "__builtins__" in names:
del names["__builtins__"]
if '__annotations__' in names:
del names['__annotations__']
if "__warningregistry__" in names:
del names["__warningregistry__"]
keys = set(names)
all_list = sys.modules[modname].__all__
all_set = set(all_list)
self.assertCountEqual(all_set, all_list, "in module {}".format(modname))
self.assertEqual(keys, all_set, "in module {}".format(modname))
def walk_modules(self, basedir, modpath):
for fn in sorted(os.listdir(basedir)):
path = os.path.join(basedir, fn)
if os.path.isdir(path):
pkg_init = os.path.join(path, '__init__.py')
if os.path.exists(pkg_init):
yield pkg_init, modpath + fn
for p, m in self.walk_modules(path, modpath + fn + "."):
yield p, m
continue
if not fn.endswith('.py') or fn == '__init__.py':
continue
yield path, modpath + fn[:-3]
def test_all(self):
# List of denied modules and packages
denylist = set([
# Will raise a SyntaxError when compiling the exec statement
'__future__',
])
if not sys.platform.startswith('java'):
# In case _socket fails to build, make this test fail more gracefully
# than an AttributeError somewhere deep in CGIHTTPServer.
import _socket
ignored = []
failed_imports = []
lib_dir = os.path.dirname(os.path.dirname(__file__))
for path, modname in self.walk_modules(lib_dir, ""):
m = modname
denied = False
while m:
if m in denylist:
denied = True
break
m = m.rpartition('.')[0]
if denied:
continue
if support.verbose:
print(modname)
try:
# This heuristic speeds up the process by removing, de facto,
# most test modules (and avoiding the auto-executing ones).
with open(path, "rb") as f:
if b"__all__" not in f.read():
raise NoAll(modname)
self.check_all(modname)
except NoAll:
ignored.append(modname)
except FailedImport:
failed_imports.append(modname)
if support.verbose:
print('Following modules have no __all__ and have been ignored:',
ignored)
print('Following modules failed to be imported:', failed_imports)
if __name__ == "__main__":
unittest.main()
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