mirror of https://github.com/python/cpython
2675 lines
99 KiB
Python
2675 lines
99 KiB
Python
import builtins
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import contextlib
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import errno
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import glob
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import json
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import importlib.util
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from importlib._bootstrap_external import _get_sourcefile
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from importlib.machinery import (
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BuiltinImporter, ExtensionFileLoader, FrozenImporter, SourceFileLoader,
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)
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import marshal
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import os
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import py_compile
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import random
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import shutil
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import stat
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import subprocess
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import sys
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import textwrap
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import threading
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import time
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import types
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import unittest
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from unittest import mock
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import _testinternalcapi
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import _imp
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from test.support import os_helper
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from test.support import (
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STDLIB_DIR, swap_attr, swap_item, cpython_only, is_emscripten,
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is_wasi, run_in_subinterp, run_in_subinterp_with_config)
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from test.support.import_helper import (
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forget, make_legacy_pyc, unlink, unload, DirsOnSysPath, CleanImport)
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from test.support.os_helper import (
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TESTFN, rmtree, temp_umask, TESTFN_UNENCODABLE, temp_dir)
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from test.support import script_helper
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from test.support import threading_helper
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from test.test_importlib.util import uncache
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from types import ModuleType
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try:
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import _testsinglephase
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except ImportError:
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_testsinglephase = None
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try:
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import _testmultiphase
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except ImportError:
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_testmultiphase = None
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try:
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import _xxsubinterpreters as _interpreters
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except ModuleNotFoundError:
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_interpreters = None
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skip_if_dont_write_bytecode = unittest.skipIf(
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sys.dont_write_bytecode,
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"test meaningful only when writing bytecode")
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def _require_loader(module, loader, skip):
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if isinstance(module, str):
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module = __import__(module)
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MODULE_KINDS = {
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BuiltinImporter: 'built-in',
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ExtensionFileLoader: 'extension',
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FrozenImporter: 'frozen',
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SourceFileLoader: 'pure Python',
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}
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expected = loader
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assert isinstance(expected, type), expected
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expected = MODULE_KINDS[expected]
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actual = module.__spec__.loader
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if not isinstance(actual, type):
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actual = type(actual)
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actual = MODULE_KINDS[actual]
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if actual != expected:
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err = f'expected module to be {expected}, got {module.__spec__}'
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if skip:
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raise unittest.SkipTest(err)
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raise Exception(err)
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return module
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def require_builtin(module, *, skip=False):
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module = _require_loader(module, BuiltinImporter, skip)
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assert module.__spec__.origin == 'built-in', module.__spec__
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def require_extension(module, *, skip=False):
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_require_loader(module, ExtensionFileLoader, skip)
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def require_frozen(module, *, skip=True):
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module = _require_loader(module, FrozenImporter, skip)
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assert module.__spec__.origin == 'frozen', module.__spec__
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def require_pure_python(module, *, skip=False):
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_require_loader(module, SourceFileLoader, skip)
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def remove_files(name):
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for f in (name + ".py",
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name + ".pyc",
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name + ".pyw",
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name + "$py.class"):
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unlink(f)
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rmtree('__pycache__')
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def no_rerun(reason):
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"""Skip rerunning for a particular test.
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WARNING: Use this decorator with care; skipping rerunning makes it
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impossible to find reference leaks. Provide a clear reason for skipping the
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test using the 'reason' parameter.
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"""
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def deco(func):
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_has_run = False
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def wrapper(self):
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nonlocal _has_run
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if _has_run:
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self.skipTest(reason)
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func(self)
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_has_run = True
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return wrapper
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return deco
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@contextlib.contextmanager
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def _ready_to_import(name=None, source=""):
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# sets up a temporary directory and removes it
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# creates the module file
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# temporarily clears the module from sys.modules (if any)
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# reverts or removes the module when cleaning up
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name = name or "spam"
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with temp_dir() as tempdir:
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path = script_helper.make_script(tempdir, name, source)
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old_module = sys.modules.pop(name, None)
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try:
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sys.path.insert(0, tempdir)
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yield name, path
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sys.path.remove(tempdir)
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finally:
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if old_module is not None:
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sys.modules[name] = old_module
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elif name in sys.modules:
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del sys.modules[name]
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def requires_subinterpreters(meth):
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"""Decorator to skip a test if subinterpreters are not supported."""
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return unittest.skipIf(_interpreters is None,
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'subinterpreters required')(meth)
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def requires_singlephase_init(meth):
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"""Decorator to skip if single-phase init modules are not supported."""
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meth = cpython_only(meth)
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return unittest.skipIf(_testsinglephase is None,
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'test requires _testsinglephase module')(meth)
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class ModuleSnapshot(types.SimpleNamespace):
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"""A representation of a module for testing.
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Fields:
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* id - the module's object ID
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* module - the actual module or an adequate substitute
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* __file__
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* __spec__
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* name
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* origin
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* ns - a copy (dict) of the module's __dict__ (or None)
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* ns_id - the object ID of the module's __dict__
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* cached - the sys.modules[mod.__spec__.name] entry (or None)
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* cached_id - the object ID of the sys.modules entry (or None)
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In cases where the value is not available (e.g. due to serialization),
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the value will be None.
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"""
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_fields = tuple('id module ns ns_id cached cached_id'.split())
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@classmethod
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def from_module(cls, mod):
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name = mod.__spec__.name
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cached = sys.modules.get(name)
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return cls(
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id=id(mod),
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module=mod,
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ns=types.SimpleNamespace(**mod.__dict__),
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ns_id=id(mod.__dict__),
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cached=cached,
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cached_id=id(cached),
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)
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SCRIPT = textwrap.dedent('''
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{imports}
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name = {name!r}
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{prescript}
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mod = {name}
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{body}
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{postscript}
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''')
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IMPORTS = textwrap.dedent('''
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import sys
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''').strip()
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SCRIPT_BODY = textwrap.dedent('''
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# Capture the snapshot data.
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cached = sys.modules.get(name)
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snapshot = dict(
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id=id(mod),
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module=dict(
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__file__=mod.__file__,
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__spec__=dict(
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name=mod.__spec__.name,
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origin=mod.__spec__.origin,
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),
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),
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ns=None,
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ns_id=id(mod.__dict__),
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cached=None,
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cached_id=id(cached) if cached else None,
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)
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''').strip()
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CLEANUP_SCRIPT = textwrap.dedent('''
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# Clean up the module.
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sys.modules.pop(name, None)
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''').strip()
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@classmethod
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def build_script(cls, name, *,
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prescript=None,
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import_first=False,
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postscript=None,
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postcleanup=False,
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):
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if postcleanup is True:
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postcleanup = cls.CLEANUP_SCRIPT
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elif isinstance(postcleanup, str):
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postcleanup = textwrap.dedent(postcleanup).strip()
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postcleanup = cls.CLEANUP_SCRIPT + os.linesep + postcleanup
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else:
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postcleanup = ''
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prescript = textwrap.dedent(prescript).strip() if prescript else ''
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postscript = textwrap.dedent(postscript).strip() if postscript else ''
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if postcleanup:
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if postscript:
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postscript = postscript + os.linesep * 2 + postcleanup
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else:
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postscript = postcleanup
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if import_first:
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prescript += textwrap.dedent(f'''
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# Now import the module.
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assert name not in sys.modules
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import {name}''')
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return cls.SCRIPT.format(
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imports=cls.IMPORTS.strip(),
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name=name,
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prescript=prescript.strip(),
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body=cls.SCRIPT_BODY.strip(),
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postscript=postscript,
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)
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@classmethod
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def parse(cls, text):
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raw = json.loads(text)
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mod = raw['module']
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mod['__spec__'] = types.SimpleNamespace(**mod['__spec__'])
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raw['module'] = types.SimpleNamespace(**mod)
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return cls(**raw)
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@classmethod
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def from_subinterp(cls, name, interpid=None, *, pipe=None, **script_kwds):
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if pipe is not None:
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return cls._from_subinterp(name, interpid, pipe, script_kwds)
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pipe = os.pipe()
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try:
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return cls._from_subinterp(name, interpid, pipe, script_kwds)
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finally:
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r, w = pipe
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os.close(r)
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os.close(w)
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@classmethod
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def _from_subinterp(cls, name, interpid, pipe, script_kwargs):
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r, w = pipe
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# Build the script.
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postscript = textwrap.dedent(f'''
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# Send the result over the pipe.
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import json
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import os
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os.write({w}, json.dumps(snapshot).encode())
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''')
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_postscript = script_kwargs.get('postscript')
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if _postscript:
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_postscript = textwrap.dedent(_postscript).lstrip()
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postscript += _postscript
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script_kwargs['postscript'] = postscript.strip()
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script = cls.build_script(name, **script_kwargs)
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# Run the script.
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if interpid is None:
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ret = run_in_subinterp(script)
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if ret != 0:
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raise AssertionError(f'{ret} != 0')
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else:
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_interpreters.run_string(interpid, script)
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# Parse the results.
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text = os.read(r, 1000)
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return cls.parse(text.decode())
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class ImportTests(unittest.TestCase):
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def setUp(self):
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remove_files(TESTFN)
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importlib.invalidate_caches()
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def tearDown(self):
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unload(TESTFN)
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def test_import_raises_ModuleNotFoundError(self):
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with self.assertRaises(ModuleNotFoundError):
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import something_that_should_not_exist_anywhere
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def test_from_import_missing_module_raises_ModuleNotFoundError(self):
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with self.assertRaises(ModuleNotFoundError):
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from something_that_should_not_exist_anywhere import blah
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def test_from_import_missing_attr_raises_ImportError(self):
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with self.assertRaises(ImportError):
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from importlib import something_that_should_not_exist_anywhere
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def test_from_import_missing_attr_has_name_and_path(self):
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with CleanImport('os'):
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import os
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with self.assertRaises(ImportError) as cm:
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from os import i_dont_exist
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self.assertEqual(cm.exception.name, 'os')
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self.assertEqual(cm.exception.path, os.__file__)
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self.assertRegex(str(cm.exception), r"cannot import name 'i_dont_exist' from 'os' \(.*os.py\)")
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@cpython_only
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def test_from_import_missing_attr_has_name_and_so_path(self):
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import _testcapi
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with self.assertRaises(ImportError) as cm:
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from _testcapi import i_dont_exist
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self.assertEqual(cm.exception.name, '_testcapi')
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if hasattr(_testcapi, "__file__"):
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self.assertEqual(cm.exception.path, _testcapi.__file__)
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self.assertRegex(
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str(cm.exception),
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r"cannot import name 'i_dont_exist' from '_testcapi' \(.*\.(so|pyd)\)"
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)
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else:
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self.assertEqual(
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str(cm.exception),
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"cannot import name 'i_dont_exist' from '_testcapi' (unknown location)"
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)
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def test_from_import_missing_attr_has_name(self):
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with self.assertRaises(ImportError) as cm:
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# _warning has no path as it's a built-in module.
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from _warning import i_dont_exist
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self.assertEqual(cm.exception.name, '_warning')
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self.assertIsNone(cm.exception.path)
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def test_from_import_missing_attr_path_is_canonical(self):
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with self.assertRaises(ImportError) as cm:
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from os.path import i_dont_exist
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self.assertIn(cm.exception.name, {'posixpath', 'ntpath'})
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self.assertIsNotNone(cm.exception)
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def test_from_import_star_invalid_type(self):
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import re
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with _ready_to_import() as (name, path):
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with open(path, 'w', encoding='utf-8') as f:
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f.write("__all__ = [b'invalid_type']")
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globals = {}
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with self.assertRaisesRegex(
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TypeError, f"{re.escape(name)}\\.__all__ must be str"
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):
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exec(f"from {name} import *", globals)
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self.assertNotIn(b"invalid_type", globals)
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with _ready_to_import() as (name, path):
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with open(path, 'w', encoding='utf-8') as f:
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f.write("globals()[b'invalid_type'] = object()")
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globals = {}
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with self.assertRaisesRegex(
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TypeError, f"{re.escape(name)}\\.__dict__ must be str"
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):
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exec(f"from {name} import *", globals)
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self.assertNotIn(b"invalid_type", globals)
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def test_case_sensitivity(self):
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# Brief digression to test that import is case-sensitive: if we got
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# this far, we know for sure that "random" exists.
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with self.assertRaises(ImportError):
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import RAnDoM
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|
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def test_double_const(self):
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# Another brief digression to test the accuracy of manifest float
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# constants.
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from test import double_const # don't blink -- that *was* the test
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|
|
def test_import(self):
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def test_with_extension(ext):
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# The extension is normally ".py", perhaps ".pyw".
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source = TESTFN + ext
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pyc = TESTFN + ".pyc"
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with open(source, "w", encoding='utf-8') as f:
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print("# This tests Python's ability to import a",
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ext, "file.", file=f)
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a = random.randrange(1000)
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b = random.randrange(1000)
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print("a =", a, file=f)
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print("b =", b, file=f)
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|
|
|
if TESTFN in sys.modules:
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del sys.modules[TESTFN]
|
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importlib.invalidate_caches()
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|
try:
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|
try:
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mod = __import__(TESTFN)
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except ImportError as err:
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self.fail("import from %s failed: %s" % (ext, err))
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|
|
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self.assertEqual(mod.a, a,
|
|
"module loaded (%s) but contents invalid" % mod)
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self.assertEqual(mod.b, b,
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"module loaded (%s) but contents invalid" % mod)
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finally:
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forget(TESTFN)
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unlink(source)
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unlink(pyc)
|
|
|
|
sys.path.insert(0, os.curdir)
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try:
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|
test_with_extension(".py")
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if sys.platform.startswith("win"):
|
|
for ext in [".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw"]:
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test_with_extension(ext)
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|
finally:
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|
del sys.path[0]
|
|
|
|
def test_module_with_large_stack(self, module='longlist'):
|
|
# Regression test for http://bugs.python.org/issue561858.
|
|
filename = module + '.py'
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|
|
|
# Create a file with a list of 65000 elements.
|
|
with open(filename, 'w', encoding='utf-8') as f:
|
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f.write('d = [\n')
|
|
for i in range(65000):
|
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f.write('"",\n')
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|
f.write(']')
|
|
|
|
try:
|
|
# Compile & remove .py file; we only need .pyc.
|
|
# Bytecode must be relocated from the PEP 3147 bytecode-only location.
|
|
py_compile.compile(filename)
|
|
finally:
|
|
unlink(filename)
|
|
|
|
# Need to be able to load from current dir.
|
|
sys.path.append('')
|
|
importlib.invalidate_caches()
|
|
|
|
namespace = {}
|
|
try:
|
|
make_legacy_pyc(filename)
|
|
# This used to crash.
|
|
exec('import ' + module, None, namespace)
|
|
finally:
|
|
# Cleanup.
|
|
del sys.path[-1]
|
|
unlink(filename + 'c')
|
|
unlink(filename + 'o')
|
|
|
|
# Remove references to the module (unload the module)
|
|
namespace.clear()
|
|
try:
|
|
del sys.modules[module]
|
|
except KeyError:
|
|
pass
|
|
|
|
def test_failing_import_sticks(self):
|
|
source = TESTFN + ".py"
|
|
with open(source, "w", encoding='utf-8') as f:
|
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print("a = 1/0", file=f)
|
|
|
|
# New in 2.4, we shouldn't be able to import that no matter how often
|
|
# we try.
|
|
sys.path.insert(0, os.curdir)
|
|
importlib.invalidate_caches()
|
|
if TESTFN in sys.modules:
|
|
del sys.modules[TESTFN]
|
|
try:
|
|
for i in [1, 2, 3]:
|
|
self.assertRaises(ZeroDivisionError, __import__, TESTFN)
|
|
self.assertNotIn(TESTFN, sys.modules,
|
|
"damaged module in sys.modules on %i try" % i)
|
|
finally:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
|
|
def test_import_name_binding(self):
|
|
# import x.y.z binds x in the current namespace
|
|
import test as x
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|
import test.support
|
|
self.assertIs(x, test, x.__name__)
|
|
self.assertTrue(hasattr(test.support, "__file__"))
|
|
|
|
# import x.y.z as w binds z as w
|
|
import test.support as y
|
|
self.assertIs(y, test.support, y.__name__)
|
|
|
|
def test_issue31286(self):
|
|
# import in a 'finally' block resulted in SystemError
|
|
try:
|
|
x = ...
|
|
finally:
|
|
import test.support.script_helper as x
|
|
|
|
# import in a 'while' loop resulted in stack overflow
|
|
i = 0
|
|
while i < 10:
|
|
import test.support.script_helper as x
|
|
i += 1
|
|
|
|
# import in a 'for' loop resulted in segmentation fault
|
|
for i in range(2):
|
|
import test.support.script_helper as x
|
|
|
|
def test_failing_reload(self):
|
|
# A failing reload should leave the module object in sys.modules.
|
|
source = TESTFN + os.extsep + "py"
|
|
with open(source, "w", encoding='utf-8') as f:
|
|
f.write("a = 1\nb=2\n")
|
|
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
mod = __import__(TESTFN)
|
|
self.assertIn(TESTFN, sys.modules)
|
|
self.assertEqual(mod.a, 1, "module has wrong attribute values")
|
|
self.assertEqual(mod.b, 2, "module has wrong attribute values")
|
|
|
|
# On WinXP, just replacing the .py file wasn't enough to
|
|
# convince reload() to reparse it. Maybe the timestamp didn't
|
|
# move enough. We force it to get reparsed by removing the
|
|
# compiled file too.
|
|
remove_files(TESTFN)
|
|
|
|
# Now damage the module.
|
|
with open(source, "w", encoding='utf-8') as f:
|
|
f.write("a = 10\nb=20//0\n")
|
|
|
|
self.assertRaises(ZeroDivisionError, importlib.reload, mod)
|
|
# But we still expect the module to be in sys.modules.
|
|
mod = sys.modules.get(TESTFN)
|
|
self.assertIsNotNone(mod, "expected module to be in sys.modules")
|
|
|
|
# We should have replaced a w/ 10, but the old b value should
|
|
# stick.
|
|
self.assertEqual(mod.a, 10, "module has wrong attribute values")
|
|
self.assertEqual(mod.b, 2, "module has wrong attribute values")
|
|
|
|
finally:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
unload(TESTFN)
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test_file_to_source(self):
|
|
# check if __file__ points to the source file where available
|
|
source = TESTFN + ".py"
|
|
with open(source, "w", encoding='utf-8') as f:
|
|
f.write("test = None\n")
|
|
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
mod = __import__(TESTFN)
|
|
self.assertTrue(mod.__file__.endswith('.py'))
|
|
os.remove(source)
|
|
del sys.modules[TESTFN]
|
|
make_legacy_pyc(source)
|
|
importlib.invalidate_caches()
|
|
mod = __import__(TESTFN)
|
|
base, ext = os.path.splitext(mod.__file__)
|
|
self.assertEqual(ext, '.pyc')
|
|
finally:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
if TESTFN in sys.modules:
|
|
del sys.modules[TESTFN]
|
|
|
|
def test_import_by_filename(self):
|
|
path = os.path.abspath(TESTFN)
|
|
encoding = sys.getfilesystemencoding()
|
|
try:
|
|
path.encode(encoding)
|
|
except UnicodeEncodeError:
|
|
self.skipTest('path is not encodable to {}'.format(encoding))
|
|
with self.assertRaises(ImportError) as c:
|
|
__import__(path)
|
|
|
|
def test_import_in_del_does_not_crash(self):
|
|
# Issue 4236
|
|
testfn = script_helper.make_script('', TESTFN, textwrap.dedent("""\
|
|
import sys
|
|
class C:
|
|
def __del__(self):
|
|
import importlib
|
|
sys.argv.insert(0, C())
|
|
"""))
|
|
script_helper.assert_python_ok(testfn)
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test_timestamp_overflow(self):
|
|
# A modification timestamp larger than 2**32 should not be a problem
|
|
# when importing a module (issue #11235).
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
source = TESTFN + ".py"
|
|
compiled = importlib.util.cache_from_source(source)
|
|
with open(source, 'w', encoding='utf-8') as f:
|
|
pass
|
|
try:
|
|
os.utime(source, (2 ** 33 - 5, 2 ** 33 - 5))
|
|
except OverflowError:
|
|
self.skipTest("cannot set modification time to large integer")
|
|
except OSError as e:
|
|
if e.errno not in (getattr(errno, 'EOVERFLOW', None),
|
|
getattr(errno, 'EINVAL', None)):
|
|
raise
|
|
self.skipTest("cannot set modification time to large integer ({})".format(e))
|
|
__import__(TESTFN)
|
|
# The pyc file was created.
|
|
os.stat(compiled)
|
|
finally:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
|
|
def test_bogus_fromlist(self):
|
|
try:
|
|
__import__('http', fromlist=['blah'])
|
|
except ImportError:
|
|
self.fail("fromlist must allow bogus names")
|
|
|
|
@cpython_only
|
|
def test_delete_builtins_import(self):
|
|
args = ["-c", "del __builtins__.__import__; import os"]
|
|
popen = script_helper.spawn_python(*args)
|
|
stdout, stderr = popen.communicate()
|
|
self.assertIn(b"ImportError", stdout)
|
|
|
|
def test_from_import_message_for_nonexistent_module(self):
|
|
with self.assertRaisesRegex(ImportError, "^No module named 'bogus'"):
|
|
from bogus import foo
|
|
|
|
def test_from_import_message_for_existing_module(self):
|
|
with self.assertRaisesRegex(ImportError, "^cannot import name 'bogus'"):
|
|
from re import bogus
|
|
|
|
def test_from_import_AttributeError(self):
|
|
# Issue #24492: trying to import an attribute that raises an
|
|
# AttributeError should lead to an ImportError.
|
|
class AlwaysAttributeError:
|
|
def __getattr__(self, _):
|
|
raise AttributeError
|
|
|
|
module_name = 'test_from_import_AttributeError'
|
|
self.addCleanup(unload, module_name)
|
|
sys.modules[module_name] = AlwaysAttributeError()
|
|
with self.assertRaises(ImportError) as cm:
|
|
from test_from_import_AttributeError import does_not_exist
|
|
|
|
self.assertEqual(str(cm.exception),
|
|
"cannot import name 'does_not_exist' from '<unknown module name>' (unknown location)")
|
|
|
|
@cpython_only
|
|
def test_issue31492(self):
|
|
# There shouldn't be an assertion failure in case of failing to import
|
|
# from a module with a bad __name__ attribute, or in case of failing
|
|
# to access an attribute of such a module.
|
|
with swap_attr(os, '__name__', None):
|
|
with self.assertRaises(ImportError):
|
|
from os import does_not_exist
|
|
|
|
with self.assertRaises(AttributeError):
|
|
os.does_not_exist
|
|
|
|
@threading_helper.requires_working_threading()
|
|
def test_concurrency(self):
|
|
# bpo 38091: this is a hack to slow down the code that calls
|
|
# has_deadlock(); the logic was itself sometimes deadlocking.
|
|
def delay_has_deadlock(frame, event, arg):
|
|
if event == 'call' and frame.f_code.co_name == 'has_deadlock':
|
|
time.sleep(0.1)
|
|
|
|
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'data'))
|
|
try:
|
|
exc = None
|
|
def run():
|
|
sys.settrace(delay_has_deadlock)
|
|
event.wait()
|
|
try:
|
|
import package
|
|
except BaseException as e:
|
|
nonlocal exc
|
|
exc = e
|
|
sys.settrace(None)
|
|
|
|
for i in range(10):
|
|
event = threading.Event()
|
|
threads = [threading.Thread(target=run) for x in range(2)]
|
|
try:
|
|
with threading_helper.start_threads(threads, event.set):
|
|
time.sleep(0)
|
|
finally:
|
|
sys.modules.pop('package', None)
|
|
sys.modules.pop('package.submodule', None)
|
|
if exc is not None:
|
|
raise exc
|
|
finally:
|
|
del sys.path[0]
|
|
|
|
@unittest.skipUnless(sys.platform == "win32", "Windows-specific")
|
|
def test_dll_dependency_import(self):
|
|
from _winapi import GetModuleFileName
|
|
dllname = GetModuleFileName(sys.dllhandle)
|
|
pydname = importlib.util.find_spec("_sqlite3").origin
|
|
depname = os.path.join(
|
|
os.path.dirname(pydname),
|
|
"sqlite3{}.dll".format("_d" if "_d" in pydname else ""))
|
|
|
|
with os_helper.temp_dir() as tmp:
|
|
tmp2 = os.path.join(tmp, "DLLs")
|
|
os.mkdir(tmp2)
|
|
|
|
pyexe = os.path.join(tmp, os.path.basename(sys.executable))
|
|
shutil.copy(sys.executable, pyexe)
|
|
shutil.copy(dllname, tmp)
|
|
for f in glob.glob(os.path.join(glob.escape(sys.prefix), "vcruntime*.dll")):
|
|
shutil.copy(f, tmp)
|
|
|
|
shutil.copy(pydname, tmp2)
|
|
|
|
env = None
|
|
env = {k.upper(): os.environ[k] for k in os.environ}
|
|
env["PYTHONPATH"] = tmp2 + ";" + STDLIB_DIR
|
|
|
|
# Test 1: import with added DLL directory
|
|
subprocess.check_call([
|
|
pyexe, "-Sc", ";".join([
|
|
"import os",
|
|
"p = os.add_dll_directory({!r})".format(
|
|
os.path.dirname(depname)),
|
|
"import _sqlite3",
|
|
"p.close"
|
|
])],
|
|
stderr=subprocess.STDOUT,
|
|
env=env,
|
|
cwd=os.path.dirname(pyexe))
|
|
|
|
# Test 2: import with DLL adjacent to PYD
|
|
shutil.copy(depname, tmp2)
|
|
subprocess.check_call([pyexe, "-Sc", "import _sqlite3"],
|
|
stderr=subprocess.STDOUT,
|
|
env=env,
|
|
cwd=os.path.dirname(pyexe))
|
|
|
|
def test_issue105979(self):
|
|
# this used to crash
|
|
with self.assertRaises(ImportError) as cm:
|
|
_imp.get_frozen_object("x", b"6\'\xd5Cu\x12")
|
|
self.assertIn("Frozen object named 'x' is invalid",
|
|
str(cm.exception))
|
|
|
|
|
|
@skip_if_dont_write_bytecode
|
|
class FilePermissionTests(unittest.TestCase):
|
|
# tests for file mode on cached .pyc files
|
|
|
|
@unittest.skipUnless(os.name == 'posix',
|
|
"test meaningful only on posix systems")
|
|
@unittest.skipIf(
|
|
is_emscripten or is_wasi,
|
|
"Emscripten's/WASI's umask is a stub."
|
|
)
|
|
def test_creation_mode(self):
|
|
mask = 0o022
|
|
with temp_umask(mask), _ready_to_import() as (name, path):
|
|
cached_path = importlib.util.cache_from_source(path)
|
|
module = __import__(name)
|
|
if not os.path.exists(cached_path):
|
|
self.fail("__import__ did not result in creation of "
|
|
"a .pyc file")
|
|
stat_info = os.stat(cached_path)
|
|
|
|
# Check that the umask is respected, and the executable bits
|
|
# aren't set.
|
|
self.assertEqual(oct(stat.S_IMODE(stat_info.st_mode)),
|
|
oct(0o666 & ~mask))
|
|
|
|
@unittest.skipUnless(os.name == 'posix',
|
|
"test meaningful only on posix systems")
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_cached_mode_issue_2051(self):
|
|
# permissions of .pyc should match those of .py, regardless of mask
|
|
mode = 0o600
|
|
with temp_umask(0o022), _ready_to_import() as (name, path):
|
|
cached_path = importlib.util.cache_from_source(path)
|
|
os.chmod(path, mode)
|
|
__import__(name)
|
|
if not os.path.exists(cached_path):
|
|
self.fail("__import__ did not result in creation of "
|
|
"a .pyc file")
|
|
stat_info = os.stat(cached_path)
|
|
|
|
self.assertEqual(oct(stat.S_IMODE(stat_info.st_mode)), oct(mode))
|
|
|
|
@unittest.skipUnless(os.name == 'posix',
|
|
"test meaningful only on posix systems")
|
|
@os_helper.skip_unless_working_chmod
|
|
def test_cached_readonly(self):
|
|
mode = 0o400
|
|
with temp_umask(0o022), _ready_to_import() as (name, path):
|
|
cached_path = importlib.util.cache_from_source(path)
|
|
os.chmod(path, mode)
|
|
__import__(name)
|
|
if not os.path.exists(cached_path):
|
|
self.fail("__import__ did not result in creation of "
|
|
"a .pyc file")
|
|
stat_info = os.stat(cached_path)
|
|
|
|
expected = mode | 0o200 # Account for fix for issue #6074
|
|
self.assertEqual(oct(stat.S_IMODE(stat_info.st_mode)), oct(expected))
|
|
|
|
def test_pyc_always_writable(self):
|
|
# Initially read-only .pyc files on Windows used to cause problems
|
|
# with later updates, see issue #6074 for details
|
|
with _ready_to_import() as (name, path):
|
|
# Write a Python file, make it read-only and import it
|
|
with open(path, 'w', encoding='utf-8') as f:
|
|
f.write("x = 'original'\n")
|
|
# Tweak the mtime of the source to ensure pyc gets updated later
|
|
s = os.stat(path)
|
|
os.utime(path, (s.st_atime, s.st_mtime-100000000))
|
|
os.chmod(path, 0o400)
|
|
m = __import__(name)
|
|
self.assertEqual(m.x, 'original')
|
|
# Change the file and then reimport it
|
|
os.chmod(path, 0o600)
|
|
with open(path, 'w', encoding='utf-8') as f:
|
|
f.write("x = 'rewritten'\n")
|
|
unload(name)
|
|
importlib.invalidate_caches()
|
|
m = __import__(name)
|
|
self.assertEqual(m.x, 'rewritten')
|
|
# Now delete the source file and check the pyc was rewritten
|
|
unlink(path)
|
|
unload(name)
|
|
importlib.invalidate_caches()
|
|
bytecode_only = path + "c"
|
|
os.rename(importlib.util.cache_from_source(path), bytecode_only)
|
|
m = __import__(name)
|
|
self.assertEqual(m.x, 'rewritten')
|
|
|
|
|
|
class PycRewritingTests(unittest.TestCase):
|
|
# Test that the `co_filename` attribute on code objects always points
|
|
# to the right file, even when various things happen (e.g. both the .py
|
|
# and the .pyc file are renamed).
|
|
|
|
module_name = "unlikely_module_name"
|
|
module_source = """
|
|
import sys
|
|
code_filename = sys._getframe().f_code.co_filename
|
|
module_filename = __file__
|
|
constant = 1
|
|
def func():
|
|
pass
|
|
func_filename = func.__code__.co_filename
|
|
"""
|
|
dir_name = os.path.abspath(TESTFN)
|
|
file_name = os.path.join(dir_name, module_name) + os.extsep + "py"
|
|
compiled_name = importlib.util.cache_from_source(file_name)
|
|
|
|
def setUp(self):
|
|
self.sys_path = sys.path[:]
|
|
self.orig_module = sys.modules.pop(self.module_name, None)
|
|
os.mkdir(self.dir_name)
|
|
with open(self.file_name, "w", encoding='utf-8') as f:
|
|
f.write(self.module_source)
|
|
sys.path.insert(0, self.dir_name)
|
|
importlib.invalidate_caches()
|
|
|
|
def tearDown(self):
|
|
sys.path[:] = self.sys_path
|
|
if self.orig_module is not None:
|
|
sys.modules[self.module_name] = self.orig_module
|
|
else:
|
|
unload(self.module_name)
|
|
unlink(self.file_name)
|
|
unlink(self.compiled_name)
|
|
rmtree(self.dir_name)
|
|
|
|
def import_module(self):
|
|
ns = globals()
|
|
__import__(self.module_name, ns, ns)
|
|
return sys.modules[self.module_name]
|
|
|
|
def test_basics(self):
|
|
mod = self.import_module()
|
|
self.assertEqual(mod.module_filename, self.file_name)
|
|
self.assertEqual(mod.code_filename, self.file_name)
|
|
self.assertEqual(mod.func_filename, self.file_name)
|
|
del sys.modules[self.module_name]
|
|
mod = self.import_module()
|
|
self.assertEqual(mod.module_filename, self.file_name)
|
|
self.assertEqual(mod.code_filename, self.file_name)
|
|
self.assertEqual(mod.func_filename, self.file_name)
|
|
|
|
def test_incorrect_code_name(self):
|
|
py_compile.compile(self.file_name, dfile="another_module.py")
|
|
mod = self.import_module()
|
|
self.assertEqual(mod.module_filename, self.file_name)
|
|
self.assertEqual(mod.code_filename, self.file_name)
|
|
self.assertEqual(mod.func_filename, self.file_name)
|
|
|
|
def test_module_without_source(self):
|
|
target = "another_module.py"
|
|
py_compile.compile(self.file_name, dfile=target)
|
|
os.remove(self.file_name)
|
|
pyc_file = make_legacy_pyc(self.file_name)
|
|
importlib.invalidate_caches()
|
|
mod = self.import_module()
|
|
self.assertEqual(mod.module_filename, pyc_file)
|
|
self.assertEqual(mod.code_filename, target)
|
|
self.assertEqual(mod.func_filename, target)
|
|
|
|
def test_foreign_code(self):
|
|
py_compile.compile(self.file_name)
|
|
with open(self.compiled_name, "rb") as f:
|
|
header = f.read(16)
|
|
code = marshal.load(f)
|
|
constants = list(code.co_consts)
|
|
foreign_code = importlib.import_module.__code__
|
|
pos = constants.index(1)
|
|
constants[pos] = foreign_code
|
|
code = code.replace(co_consts=tuple(constants))
|
|
with open(self.compiled_name, "wb") as f:
|
|
f.write(header)
|
|
marshal.dump(code, f)
|
|
mod = self.import_module()
|
|
self.assertEqual(mod.constant.co_filename, foreign_code.co_filename)
|
|
|
|
|
|
class PathsTests(unittest.TestCase):
|
|
SAMPLES = ('test', 'test\u00e4\u00f6\u00fc\u00df', 'test\u00e9\u00e8',
|
|
'test\u00b0\u00b3\u00b2')
|
|
path = TESTFN
|
|
|
|
def setUp(self):
|
|
os.mkdir(self.path)
|
|
self.syspath = sys.path[:]
|
|
|
|
def tearDown(self):
|
|
rmtree(self.path)
|
|
sys.path[:] = self.syspath
|
|
|
|
# Regression test for http://bugs.python.org/issue1293.
|
|
def test_trailing_slash(self):
|
|
with open(os.path.join(self.path, 'test_trailing_slash.py'),
|
|
'w', encoding='utf-8') as f:
|
|
f.write("testdata = 'test_trailing_slash'")
|
|
sys.path.append(self.path+'/')
|
|
mod = __import__("test_trailing_slash")
|
|
self.assertEqual(mod.testdata, 'test_trailing_slash')
|
|
unload("test_trailing_slash")
|
|
|
|
# Regression test for http://bugs.python.org/issue3677.
|
|
@unittest.skipUnless(sys.platform == 'win32', 'Windows-specific')
|
|
def test_UNC_path(self):
|
|
with open(os.path.join(self.path, 'test_unc_path.py'), 'w') as f:
|
|
f.write("testdata = 'test_unc_path'")
|
|
importlib.invalidate_caches()
|
|
# Create the UNC path, like \\myhost\c$\foo\bar.
|
|
path = os.path.abspath(self.path)
|
|
import socket
|
|
hn = socket.gethostname()
|
|
drive = path[0]
|
|
unc = "\\\\%s\\%s$"%(hn, drive)
|
|
unc += path[2:]
|
|
try:
|
|
os.listdir(unc)
|
|
except OSError as e:
|
|
if e.errno in (errno.EPERM, errno.EACCES, errno.ENOENT):
|
|
# See issue #15338
|
|
self.skipTest("cannot access administrative share %r" % (unc,))
|
|
raise
|
|
sys.path.insert(0, unc)
|
|
try:
|
|
mod = __import__("test_unc_path")
|
|
except ImportError as e:
|
|
self.fail("could not import 'test_unc_path' from %r: %r"
|
|
% (unc, e))
|
|
self.assertEqual(mod.testdata, 'test_unc_path')
|
|
self.assertTrue(mod.__file__.startswith(unc), mod.__file__)
|
|
unload("test_unc_path")
|
|
|
|
|
|
class RelativeImportTests(unittest.TestCase):
|
|
|
|
def tearDown(self):
|
|
unload("test.relimport")
|
|
setUp = tearDown
|
|
|
|
def test_relimport_star(self):
|
|
# This will import * from .test_import.
|
|
from .. import relimport
|
|
self.assertTrue(hasattr(relimport, "RelativeImportTests"))
|
|
|
|
def test_issue3221(self):
|
|
# Note for mergers: the 'absolute' tests from the 2.x branch
|
|
# are missing in Py3k because implicit relative imports are
|
|
# a thing of the past
|
|
#
|
|
# Regression test for http://bugs.python.org/issue3221.
|
|
def check_relative():
|
|
exec("from . import relimport", ns)
|
|
|
|
# Check relative import OK with __package__ and __name__ correct
|
|
ns = dict(__package__='test', __name__='test.notarealmodule')
|
|
check_relative()
|
|
|
|
# Check relative import OK with only __name__ wrong
|
|
ns = dict(__package__='test', __name__='notarealpkg.notarealmodule')
|
|
check_relative()
|
|
|
|
# Check relative import fails with only __package__ wrong
|
|
ns = dict(__package__='foo', __name__='test.notarealmodule')
|
|
self.assertRaises(ModuleNotFoundError, check_relative)
|
|
|
|
# Check relative import fails with __package__ and __name__ wrong
|
|
ns = dict(__package__='foo', __name__='notarealpkg.notarealmodule')
|
|
self.assertRaises(ModuleNotFoundError, check_relative)
|
|
|
|
# Check relative import fails with package set to a non-string
|
|
ns = dict(__package__=object())
|
|
self.assertRaises(TypeError, check_relative)
|
|
|
|
def test_parentless_import_shadowed_by_global(self):
|
|
# Test as if this were done from the REPL where this error most commonly occurs (bpo-37409).
|
|
script_helper.assert_python_failure('-W', 'ignore', '-c',
|
|
"foo = 1; from . import foo")
|
|
|
|
def test_absolute_import_without_future(self):
|
|
# If explicit relative import syntax is used, then do not try
|
|
# to perform an absolute import in the face of failure.
|
|
# Issue #7902.
|
|
with self.assertRaises(ImportError):
|
|
from .os import sep
|
|
self.fail("explicit relative import triggered an "
|
|
"implicit absolute import")
|
|
|
|
def test_import_from_non_package(self):
|
|
path = os.path.join(os.path.dirname(__file__), 'data', 'package2')
|
|
with uncache('submodule1', 'submodule2'), DirsOnSysPath(path):
|
|
with self.assertRaises(ImportError):
|
|
import submodule1
|
|
self.assertNotIn('submodule1', sys.modules)
|
|
self.assertNotIn('submodule2', sys.modules)
|
|
|
|
def test_import_from_unloaded_package(self):
|
|
with uncache('package2', 'package2.submodule1', 'package2.submodule2'), \
|
|
DirsOnSysPath(os.path.join(os.path.dirname(__file__), 'data')):
|
|
import package2.submodule1
|
|
package2.submodule1.submodule2
|
|
|
|
|
|
class OverridingImportBuiltinTests(unittest.TestCase):
|
|
def test_override_builtin(self):
|
|
# Test that overriding builtins.__import__ can bypass sys.modules.
|
|
import os
|
|
|
|
def foo():
|
|
import os
|
|
return os
|
|
self.assertEqual(foo(), os) # Quick sanity check.
|
|
|
|
with swap_attr(builtins, "__import__", lambda *x: 5):
|
|
self.assertEqual(foo(), 5)
|
|
|
|
# Test what happens when we shadow __import__ in globals(); this
|
|
# currently does not impact the import process, but if this changes,
|
|
# other code will need to change, so keep this test as a tripwire.
|
|
with swap_item(globals(), "__import__", lambda *x: 5):
|
|
self.assertEqual(foo(), os)
|
|
|
|
|
|
class PycacheTests(unittest.TestCase):
|
|
# Test the various PEP 3147/488-related behaviors.
|
|
|
|
def _clean(self):
|
|
forget(TESTFN)
|
|
rmtree('__pycache__')
|
|
unlink(self.source)
|
|
|
|
def setUp(self):
|
|
self.source = TESTFN + '.py'
|
|
self._clean()
|
|
with open(self.source, 'w', encoding='utf-8') as fp:
|
|
print('# This is a test file written by test_import.py', file=fp)
|
|
sys.path.insert(0, os.curdir)
|
|
importlib.invalidate_caches()
|
|
|
|
def tearDown(self):
|
|
assert sys.path[0] == os.curdir, 'Unexpected sys.path[0]'
|
|
del sys.path[0]
|
|
self._clean()
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test_import_pyc_path(self):
|
|
self.assertFalse(os.path.exists('__pycache__'))
|
|
__import__(TESTFN)
|
|
self.assertTrue(os.path.exists('__pycache__'))
|
|
pyc_path = importlib.util.cache_from_source(self.source)
|
|
self.assertTrue(os.path.exists(pyc_path),
|
|
'bytecode file {!r} for {!r} does not '
|
|
'exist'.format(pyc_path, TESTFN))
|
|
|
|
@unittest.skipUnless(os.name == 'posix',
|
|
"test meaningful only on posix systems")
|
|
@skip_if_dont_write_bytecode
|
|
@os_helper.skip_unless_working_chmod
|
|
@os_helper.skip_if_dac_override
|
|
@unittest.skipIf(is_emscripten, "umask is a stub")
|
|
def test_unwritable_directory(self):
|
|
# When the umask causes the new __pycache__ directory to be
|
|
# unwritable, the import still succeeds but no .pyc file is written.
|
|
with temp_umask(0o222):
|
|
__import__(TESTFN)
|
|
self.assertTrue(os.path.exists('__pycache__'))
|
|
pyc_path = importlib.util.cache_from_source(self.source)
|
|
self.assertFalse(os.path.exists(pyc_path),
|
|
'bytecode file {!r} for {!r} '
|
|
'exists'.format(pyc_path, TESTFN))
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test_missing_source(self):
|
|
# With PEP 3147 cache layout, removing the source but leaving the pyc
|
|
# file does not satisfy the import.
|
|
__import__(TESTFN)
|
|
pyc_file = importlib.util.cache_from_source(self.source)
|
|
self.assertTrue(os.path.exists(pyc_file))
|
|
os.remove(self.source)
|
|
forget(TESTFN)
|
|
importlib.invalidate_caches()
|
|
self.assertRaises(ImportError, __import__, TESTFN)
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test_missing_source_legacy(self):
|
|
# Like test_missing_source() except that for backward compatibility,
|
|
# when the pyc file lives where the py file would have been (and named
|
|
# without the tag), it is importable. The __file__ of the imported
|
|
# module is the pyc location.
|
|
__import__(TESTFN)
|
|
# pyc_file gets removed in _clean() via tearDown().
|
|
pyc_file = make_legacy_pyc(self.source)
|
|
os.remove(self.source)
|
|
unload(TESTFN)
|
|
importlib.invalidate_caches()
|
|
m = __import__(TESTFN)
|
|
try:
|
|
self.assertEqual(m.__file__,
|
|
os.path.join(os.getcwd(), os.path.relpath(pyc_file)))
|
|
finally:
|
|
os.remove(pyc_file)
|
|
|
|
def test___cached__(self):
|
|
# Modules now also have an __cached__ that points to the pyc file.
|
|
m = __import__(TESTFN)
|
|
pyc_file = importlib.util.cache_from_source(TESTFN + '.py')
|
|
self.assertEqual(m.__cached__, os.path.join(os.getcwd(), pyc_file))
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test___cached___legacy_pyc(self):
|
|
# Like test___cached__() except that for backward compatibility,
|
|
# when the pyc file lives where the py file would have been (and named
|
|
# without the tag), it is importable. The __cached__ of the imported
|
|
# module is the pyc location.
|
|
__import__(TESTFN)
|
|
# pyc_file gets removed in _clean() via tearDown().
|
|
pyc_file = make_legacy_pyc(self.source)
|
|
os.remove(self.source)
|
|
unload(TESTFN)
|
|
importlib.invalidate_caches()
|
|
m = __import__(TESTFN)
|
|
self.assertEqual(m.__cached__,
|
|
os.path.join(os.getcwd(), os.path.relpath(pyc_file)))
|
|
|
|
@skip_if_dont_write_bytecode
|
|
def test_package___cached__(self):
|
|
# Like test___cached__ but for packages.
|
|
def cleanup():
|
|
rmtree('pep3147')
|
|
unload('pep3147.foo')
|
|
unload('pep3147')
|
|
os.mkdir('pep3147')
|
|
self.addCleanup(cleanup)
|
|
# Touch the __init__.py
|
|
with open(os.path.join('pep3147', '__init__.py'), 'wb'):
|
|
pass
|
|
with open(os.path.join('pep3147', 'foo.py'), 'wb'):
|
|
pass
|
|
importlib.invalidate_caches()
|
|
m = __import__('pep3147.foo')
|
|
init_pyc = importlib.util.cache_from_source(
|
|
os.path.join('pep3147', '__init__.py'))
|
|
self.assertEqual(m.__cached__, os.path.join(os.getcwd(), init_pyc))
|
|
foo_pyc = importlib.util.cache_from_source(os.path.join('pep3147', 'foo.py'))
|
|
self.assertEqual(sys.modules['pep3147.foo'].__cached__,
|
|
os.path.join(os.getcwd(), foo_pyc))
|
|
|
|
def test_package___cached___from_pyc(self):
|
|
# Like test___cached__ but ensuring __cached__ when imported from a
|
|
# PEP 3147 pyc file.
|
|
def cleanup():
|
|
rmtree('pep3147')
|
|
unload('pep3147.foo')
|
|
unload('pep3147')
|
|
os.mkdir('pep3147')
|
|
self.addCleanup(cleanup)
|
|
# Touch the __init__.py
|
|
with open(os.path.join('pep3147', '__init__.py'), 'wb'):
|
|
pass
|
|
with open(os.path.join('pep3147', 'foo.py'), 'wb'):
|
|
pass
|
|
importlib.invalidate_caches()
|
|
m = __import__('pep3147.foo')
|
|
unload('pep3147.foo')
|
|
unload('pep3147')
|
|
importlib.invalidate_caches()
|
|
m = __import__('pep3147.foo')
|
|
init_pyc = importlib.util.cache_from_source(
|
|
os.path.join('pep3147', '__init__.py'))
|
|
self.assertEqual(m.__cached__, os.path.join(os.getcwd(), init_pyc))
|
|
foo_pyc = importlib.util.cache_from_source(os.path.join('pep3147', 'foo.py'))
|
|
self.assertEqual(sys.modules['pep3147.foo'].__cached__,
|
|
os.path.join(os.getcwd(), foo_pyc))
|
|
|
|
def test_recompute_pyc_same_second(self):
|
|
# Even when the source file doesn't change timestamp, a change in
|
|
# source size is enough to trigger recomputation of the pyc file.
|
|
__import__(TESTFN)
|
|
unload(TESTFN)
|
|
with open(self.source, 'a', encoding='utf-8') as fp:
|
|
print("x = 5", file=fp)
|
|
m = __import__(TESTFN)
|
|
self.assertEqual(m.x, 5)
|
|
|
|
|
|
class TestSymbolicallyLinkedPackage(unittest.TestCase):
|
|
package_name = 'sample'
|
|
tagged = package_name + '-tagged'
|
|
|
|
def setUp(self):
|
|
os_helper.rmtree(self.tagged)
|
|
os_helper.rmtree(self.package_name)
|
|
self.orig_sys_path = sys.path[:]
|
|
|
|
# create a sample package; imagine you have a package with a tag and
|
|
# you want to symbolically link it from its untagged name.
|
|
os.mkdir(self.tagged)
|
|
self.addCleanup(os_helper.rmtree, self.tagged)
|
|
init_file = os.path.join(self.tagged, '__init__.py')
|
|
os_helper.create_empty_file(init_file)
|
|
assert os.path.exists(init_file)
|
|
|
|
# now create a symlink to the tagged package
|
|
# sample -> sample-tagged
|
|
os.symlink(self.tagged, self.package_name, target_is_directory=True)
|
|
self.addCleanup(os_helper.unlink, self.package_name)
|
|
importlib.invalidate_caches()
|
|
|
|
self.assertEqual(os.path.isdir(self.package_name), True)
|
|
|
|
assert os.path.isfile(os.path.join(self.package_name, '__init__.py'))
|
|
|
|
def tearDown(self):
|
|
sys.path[:] = self.orig_sys_path
|
|
|
|
# regression test for issue6727
|
|
@unittest.skipUnless(
|
|
not hasattr(sys, 'getwindowsversion')
|
|
or sys.getwindowsversion() >= (6, 0),
|
|
"Windows Vista or later required")
|
|
@os_helper.skip_unless_symlink
|
|
def test_symlinked_dir_importable(self):
|
|
# make sure sample can only be imported from the current directory.
|
|
sys.path[:] = ['.']
|
|
assert os.path.exists(self.package_name)
|
|
assert os.path.exists(os.path.join(self.package_name, '__init__.py'))
|
|
|
|
# Try to import the package
|
|
importlib.import_module(self.package_name)
|
|
|
|
|
|
@cpython_only
|
|
class ImportlibBootstrapTests(unittest.TestCase):
|
|
# These tests check that importlib is bootstrapped.
|
|
|
|
def test_frozen_importlib(self):
|
|
mod = sys.modules['_frozen_importlib']
|
|
self.assertTrue(mod)
|
|
|
|
def test_frozen_importlib_is_bootstrap(self):
|
|
from importlib import _bootstrap
|
|
mod = sys.modules['_frozen_importlib']
|
|
self.assertIs(mod, _bootstrap)
|
|
self.assertEqual(mod.__name__, 'importlib._bootstrap')
|
|
self.assertEqual(mod.__package__, 'importlib')
|
|
self.assertTrue(mod.__file__.endswith('_bootstrap.py'), mod.__file__)
|
|
|
|
def test_frozen_importlib_external_is_bootstrap_external(self):
|
|
from importlib import _bootstrap_external
|
|
mod = sys.modules['_frozen_importlib_external']
|
|
self.assertIs(mod, _bootstrap_external)
|
|
self.assertEqual(mod.__name__, 'importlib._bootstrap_external')
|
|
self.assertEqual(mod.__package__, 'importlib')
|
|
self.assertTrue(mod.__file__.endswith('_bootstrap_external.py'), mod.__file__)
|
|
|
|
def test_there_can_be_only_one(self):
|
|
# Issue #15386 revealed a tricky loophole in the bootstrapping
|
|
# This test is technically redundant, since the bug caused importing
|
|
# this test module to crash completely, but it helps prove the point
|
|
from importlib import machinery
|
|
mod = sys.modules['_frozen_importlib']
|
|
self.assertIs(machinery.ModuleSpec, mod.ModuleSpec)
|
|
|
|
|
|
@cpython_only
|
|
class GetSourcefileTests(unittest.TestCase):
|
|
|
|
"""Test importlib._bootstrap_external._get_sourcefile() as used by the C API.
|
|
|
|
Because of the peculiarities of the need of this function, the tests are
|
|
knowingly whitebox tests.
|
|
|
|
"""
|
|
|
|
def test_get_sourcefile(self):
|
|
# Given a valid bytecode path, return the path to the corresponding
|
|
# source file if it exists.
|
|
with mock.patch('importlib._bootstrap_external._path_isfile') as _path_isfile:
|
|
_path_isfile.return_value = True
|
|
path = TESTFN + '.pyc'
|
|
expect = TESTFN + '.py'
|
|
self.assertEqual(_get_sourcefile(path), expect)
|
|
|
|
def test_get_sourcefile_no_source(self):
|
|
# Given a valid bytecode path without a corresponding source path,
|
|
# return the original bytecode path.
|
|
with mock.patch('importlib._bootstrap_external._path_isfile') as _path_isfile:
|
|
_path_isfile.return_value = False
|
|
path = TESTFN + '.pyc'
|
|
self.assertEqual(_get_sourcefile(path), path)
|
|
|
|
def test_get_sourcefile_bad_ext(self):
|
|
# Given a path with an invalid bytecode extension, return the
|
|
# bytecode path passed as the argument.
|
|
path = TESTFN + '.bad_ext'
|
|
self.assertEqual(_get_sourcefile(path), path)
|
|
|
|
|
|
class ImportTracebackTests(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
os.mkdir(TESTFN)
|
|
self.old_path = sys.path[:]
|
|
sys.path.insert(0, TESTFN)
|
|
|
|
def tearDown(self):
|
|
sys.path[:] = self.old_path
|
|
rmtree(TESTFN)
|
|
|
|
def create_module(self, mod, contents, ext=".py"):
|
|
fname = os.path.join(TESTFN, mod + ext)
|
|
with open(fname, "w", encoding='utf-8') as f:
|
|
f.write(contents)
|
|
self.addCleanup(unload, mod)
|
|
importlib.invalidate_caches()
|
|
return fname
|
|
|
|
def assert_traceback(self, tb, files):
|
|
deduped_files = []
|
|
while tb:
|
|
code = tb.tb_frame.f_code
|
|
fn = code.co_filename
|
|
if not deduped_files or fn != deduped_files[-1]:
|
|
deduped_files.append(fn)
|
|
tb = tb.tb_next
|
|
self.assertEqual(len(deduped_files), len(files), deduped_files)
|
|
for fn, pat in zip(deduped_files, files):
|
|
self.assertIn(pat, fn)
|
|
|
|
def test_nonexistent_module(self):
|
|
try:
|
|
# assertRaises() clears __traceback__
|
|
import nonexistent_xyzzy
|
|
except ImportError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ImportError should have been raised")
|
|
self.assert_traceback(tb, [__file__])
|
|
|
|
def test_nonexistent_module_nested(self):
|
|
self.create_module("foo", "import nonexistent_xyzzy")
|
|
try:
|
|
import foo
|
|
except ImportError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ImportError should have been raised")
|
|
self.assert_traceback(tb, [__file__, 'foo.py'])
|
|
|
|
def test_exec_failure(self):
|
|
self.create_module("foo", "1/0")
|
|
try:
|
|
import foo
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ZeroDivisionError should have been raised")
|
|
self.assert_traceback(tb, [__file__, 'foo.py'])
|
|
|
|
def test_exec_failure_nested(self):
|
|
self.create_module("foo", "import bar")
|
|
self.create_module("bar", "1/0")
|
|
try:
|
|
import foo
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ZeroDivisionError should have been raised")
|
|
self.assert_traceback(tb, [__file__, 'foo.py', 'bar.py'])
|
|
|
|
# A few more examples from issue #15425
|
|
def test_syntax_error(self):
|
|
self.create_module("foo", "invalid syntax is invalid")
|
|
try:
|
|
import foo
|
|
except SyntaxError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("SyntaxError should have been raised")
|
|
self.assert_traceback(tb, [__file__])
|
|
|
|
def _setup_broken_package(self, parent, child):
|
|
pkg_name = "_parent_foo"
|
|
self.addCleanup(unload, pkg_name)
|
|
pkg_path = os.path.join(TESTFN, pkg_name)
|
|
os.mkdir(pkg_path)
|
|
# Touch the __init__.py
|
|
init_path = os.path.join(pkg_path, '__init__.py')
|
|
with open(init_path, 'w', encoding='utf-8') as f:
|
|
f.write(parent)
|
|
bar_path = os.path.join(pkg_path, 'bar.py')
|
|
with open(bar_path, 'w', encoding='utf-8') as f:
|
|
f.write(child)
|
|
importlib.invalidate_caches()
|
|
return init_path, bar_path
|
|
|
|
def test_broken_submodule(self):
|
|
init_path, bar_path = self._setup_broken_package("", "1/0")
|
|
try:
|
|
import _parent_foo.bar
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ZeroDivisionError should have been raised")
|
|
self.assert_traceback(tb, [__file__, bar_path])
|
|
|
|
def test_broken_from(self):
|
|
init_path, bar_path = self._setup_broken_package("", "1/0")
|
|
try:
|
|
from _parent_foo import bar
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ImportError should have been raised")
|
|
self.assert_traceback(tb, [__file__, bar_path])
|
|
|
|
def test_broken_parent(self):
|
|
init_path, bar_path = self._setup_broken_package("1/0", "")
|
|
try:
|
|
import _parent_foo.bar
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ZeroDivisionError should have been raised")
|
|
self.assert_traceback(tb, [__file__, init_path])
|
|
|
|
def test_broken_parent_from(self):
|
|
init_path, bar_path = self._setup_broken_package("1/0", "")
|
|
try:
|
|
from _parent_foo import bar
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ZeroDivisionError should have been raised")
|
|
self.assert_traceback(tb, [__file__, init_path])
|
|
|
|
@cpython_only
|
|
def test_import_bug(self):
|
|
# We simulate a bug in importlib and check that it's not stripped
|
|
# away from the traceback.
|
|
self.create_module("foo", "")
|
|
importlib = sys.modules['_frozen_importlib_external']
|
|
if 'load_module' in vars(importlib.SourceLoader):
|
|
old_exec_module = importlib.SourceLoader.exec_module
|
|
else:
|
|
old_exec_module = None
|
|
try:
|
|
def exec_module(*args):
|
|
1/0
|
|
importlib.SourceLoader.exec_module = exec_module
|
|
try:
|
|
import foo
|
|
except ZeroDivisionError as e:
|
|
tb = e.__traceback__
|
|
else:
|
|
self.fail("ZeroDivisionError should have been raised")
|
|
self.assert_traceback(tb, [__file__, '<frozen importlib', __file__])
|
|
finally:
|
|
if old_exec_module is None:
|
|
del importlib.SourceLoader.exec_module
|
|
else:
|
|
importlib.SourceLoader.exec_module = old_exec_module
|
|
|
|
@unittest.skipUnless(TESTFN_UNENCODABLE, 'need TESTFN_UNENCODABLE')
|
|
def test_unencodable_filename(self):
|
|
# Issue #11619: The Python parser and the import machinery must not
|
|
# encode filenames, especially on Windows
|
|
pyname = script_helper.make_script('', TESTFN_UNENCODABLE, 'pass')
|
|
self.addCleanup(unlink, pyname)
|
|
name = pyname[:-3]
|
|
script_helper.assert_python_ok("-c", "mod = __import__(%a)" % name,
|
|
__isolated=False)
|
|
|
|
|
|
class CircularImportTests(unittest.TestCase):
|
|
|
|
"""See the docstrings of the modules being imported for the purpose of the
|
|
test."""
|
|
|
|
def tearDown(self):
|
|
"""Make sure no modules pre-exist in sys.modules which are being used to
|
|
test."""
|
|
for key in list(sys.modules.keys()):
|
|
if key.startswith('test.test_import.data.circular_imports'):
|
|
del sys.modules[key]
|
|
|
|
def test_direct(self):
|
|
try:
|
|
import test.test_import.data.circular_imports.basic
|
|
except ImportError:
|
|
self.fail('circular import through relative imports failed')
|
|
|
|
def test_indirect(self):
|
|
try:
|
|
import test.test_import.data.circular_imports.indirect
|
|
except ImportError:
|
|
self.fail('relative import in module contributing to circular '
|
|
'import failed')
|
|
|
|
def test_subpackage(self):
|
|
try:
|
|
import test.test_import.data.circular_imports.subpackage
|
|
except ImportError:
|
|
self.fail('circular import involving a subpackage failed')
|
|
|
|
def test_rebinding(self):
|
|
try:
|
|
import test.test_import.data.circular_imports.rebinding as rebinding
|
|
except ImportError:
|
|
self.fail('circular import with rebinding of module attribute failed')
|
|
from test.test_import.data.circular_imports.subpkg import util
|
|
self.assertIs(util.util, rebinding.util)
|
|
|
|
def test_binding(self):
|
|
try:
|
|
import test.test_import.data.circular_imports.binding
|
|
except ImportError:
|
|
self.fail('circular import with binding a submodule to a name failed')
|
|
|
|
def test_crossreference1(self):
|
|
import test.test_import.data.circular_imports.use
|
|
import test.test_import.data.circular_imports.source
|
|
|
|
def test_crossreference2(self):
|
|
with self.assertRaises(AttributeError) as cm:
|
|
import test.test_import.data.circular_imports.source
|
|
errmsg = str(cm.exception)
|
|
self.assertIn('test.test_import.data.circular_imports.source', errmsg)
|
|
self.assertIn('spam', errmsg)
|
|
self.assertIn('partially initialized module', errmsg)
|
|
self.assertIn('circular import', errmsg)
|
|
|
|
def test_circular_from_import(self):
|
|
with self.assertRaises(ImportError) as cm:
|
|
import test.test_import.data.circular_imports.from_cycle1
|
|
self.assertIn(
|
|
"cannot import name 'b' from partially initialized module "
|
|
"'test.test_import.data.circular_imports.from_cycle1' "
|
|
"(most likely due to a circular import)",
|
|
str(cm.exception),
|
|
)
|
|
|
|
def test_absolute_circular_submodule(self):
|
|
with self.assertRaises(AttributeError) as cm:
|
|
import test.test_import.data.circular_imports.subpkg2.parent
|
|
self.assertIn(
|
|
"cannot access submodule 'parent' of module "
|
|
"'test.test_import.data.circular_imports.subpkg2' "
|
|
"(most likely due to a circular import)",
|
|
str(cm.exception),
|
|
)
|
|
|
|
def test_unwritable_module(self):
|
|
self.addCleanup(unload, "test.test_import.data.unwritable")
|
|
self.addCleanup(unload, "test.test_import.data.unwritable.x")
|
|
|
|
import test.test_import.data.unwritable as unwritable
|
|
with self.assertWarns(ImportWarning):
|
|
from test.test_import.data.unwritable import x
|
|
|
|
self.assertNotEqual(type(unwritable), ModuleType)
|
|
self.assertEqual(type(x), ModuleType)
|
|
with self.assertRaises(AttributeError):
|
|
unwritable.x = 42
|
|
|
|
|
|
class SubinterpImportTests(unittest.TestCase):
|
|
|
|
RUN_KWARGS = dict(
|
|
allow_fork=False,
|
|
allow_exec=False,
|
|
allow_threads=True,
|
|
allow_daemon_threads=False,
|
|
# Isolation-related config values aren't included here.
|
|
)
|
|
ISOLATED = dict(
|
|
use_main_obmalloc=False,
|
|
gil=2,
|
|
)
|
|
NOT_ISOLATED = {k: not v for k, v in ISOLATED.items()}
|
|
NOT_ISOLATED['gil'] = 1
|
|
|
|
@unittest.skipUnless(hasattr(os, "pipe"), "requires os.pipe()")
|
|
def pipe(self):
|
|
r, w = os.pipe()
|
|
self.addCleanup(os.close, r)
|
|
self.addCleanup(os.close, w)
|
|
if hasattr(os, 'set_blocking'):
|
|
os.set_blocking(r, False)
|
|
return (r, w)
|
|
|
|
def import_script(self, name, fd, filename=None, check_override=None):
|
|
override_text = ''
|
|
if check_override is not None:
|
|
override_text = f'''
|
|
import _imp
|
|
_imp._override_multi_interp_extensions_check({check_override})
|
|
'''
|
|
if filename:
|
|
return textwrap.dedent(f'''
|
|
from importlib.util import spec_from_loader, module_from_spec
|
|
from importlib.machinery import ExtensionFileLoader
|
|
import os, sys
|
|
{override_text}
|
|
loader = ExtensionFileLoader({name!r}, {filename!r})
|
|
spec = spec_from_loader({name!r}, loader)
|
|
try:
|
|
module = module_from_spec(spec)
|
|
loader.exec_module(module)
|
|
except ImportError as exc:
|
|
text = 'ImportError: ' + str(exc)
|
|
else:
|
|
text = 'okay'
|
|
os.write({fd}, text.encode('utf-8'))
|
|
''')
|
|
else:
|
|
return textwrap.dedent(f'''
|
|
import os, sys
|
|
{override_text}
|
|
try:
|
|
import {name}
|
|
except ImportError as exc:
|
|
text = 'ImportError: ' + str(exc)
|
|
else:
|
|
text = 'okay'
|
|
os.write({fd}, text.encode('utf-8'))
|
|
''')
|
|
|
|
def run_here(self, name, filename=None, *,
|
|
check_singlephase_setting=False,
|
|
check_singlephase_override=None,
|
|
isolated=False,
|
|
):
|
|
"""
|
|
Try importing the named module in a subinterpreter.
|
|
|
|
The subinterpreter will be in the current process.
|
|
The module will have already been imported in the main interpreter.
|
|
Thus, for extension/builtin modules, the module definition will
|
|
have been loaded already and cached globally.
|
|
|
|
"check_singlephase_setting" determines whether or not
|
|
the interpreter will be configured to check for modules
|
|
that are not compatible with use in multiple interpreters.
|
|
|
|
This should always return "okay" for all modules if the
|
|
setting is False (with no override).
|
|
"""
|
|
__import__(name)
|
|
|
|
kwargs = dict(
|
|
**self.RUN_KWARGS,
|
|
**(self.ISOLATED if isolated else self.NOT_ISOLATED),
|
|
check_multi_interp_extensions=check_singlephase_setting,
|
|
)
|
|
|
|
r, w = self.pipe()
|
|
script = self.import_script(name, w, filename,
|
|
check_singlephase_override)
|
|
|
|
ret = run_in_subinterp_with_config(script, **kwargs)
|
|
self.assertEqual(ret, 0)
|
|
return os.read(r, 100)
|
|
|
|
def check_compatible_here(self, name, filename=None, *,
|
|
strict=False,
|
|
isolated=False,
|
|
):
|
|
# Verify that the named module may be imported in a subinterpreter.
|
|
# (See run_here() for more info.)
|
|
out = self.run_here(name, filename,
|
|
check_singlephase_setting=strict,
|
|
isolated=isolated,
|
|
)
|
|
self.assertEqual(out, b'okay')
|
|
|
|
def check_incompatible_here(self, name, filename=None, *, isolated=False):
|
|
# Differences from check_compatible_here():
|
|
# * verify that import fails
|
|
# * "strict" is always True
|
|
out = self.run_here(name, filename,
|
|
check_singlephase_setting=True,
|
|
isolated=isolated,
|
|
)
|
|
self.assertEqual(
|
|
out.decode('utf-8'),
|
|
f'ImportError: module {name} does not support loading in subinterpreters',
|
|
)
|
|
|
|
def check_compatible_fresh(self, name, *, strict=False, isolated=False):
|
|
# Differences from check_compatible_here():
|
|
# * subinterpreter in a new process
|
|
# * module has never been imported before in that process
|
|
# * this tests importing the module for the first time
|
|
kwargs = dict(
|
|
**self.RUN_KWARGS,
|
|
**(self.ISOLATED if isolated else self.NOT_ISOLATED),
|
|
check_multi_interp_extensions=strict,
|
|
)
|
|
_, out, err = script_helper.assert_python_ok('-c', textwrap.dedent(f'''
|
|
import _testcapi, sys
|
|
assert (
|
|
{name!r} in sys.builtin_module_names or
|
|
{name!r} not in sys.modules
|
|
), repr({name!r})
|
|
ret = _testcapi.run_in_subinterp_with_config(
|
|
{self.import_script(name, "sys.stdout.fileno()")!r},
|
|
**{kwargs},
|
|
)
|
|
assert ret == 0, ret
|
|
'''))
|
|
self.assertEqual(err, b'')
|
|
self.assertEqual(out, b'okay')
|
|
|
|
def check_incompatible_fresh(self, name, *, isolated=False):
|
|
# Differences from check_compatible_fresh():
|
|
# * verify that import fails
|
|
# * "strict" is always True
|
|
kwargs = dict(
|
|
**self.RUN_KWARGS,
|
|
**(self.ISOLATED if isolated else self.NOT_ISOLATED),
|
|
check_multi_interp_extensions=True,
|
|
)
|
|
_, out, err = script_helper.assert_python_ok('-c', textwrap.dedent(f'''
|
|
import _testcapi, sys
|
|
assert {name!r} not in sys.modules, {name!r}
|
|
ret = _testcapi.run_in_subinterp_with_config(
|
|
{self.import_script(name, "sys.stdout.fileno()")!r},
|
|
**{kwargs},
|
|
)
|
|
assert ret == 0, ret
|
|
'''))
|
|
self.assertEqual(err, b'')
|
|
self.assertEqual(
|
|
out.decode('utf-8'),
|
|
f'ImportError: module {name} does not support loading in subinterpreters',
|
|
)
|
|
|
|
def test_builtin_compat(self):
|
|
# For now we avoid using sys or builtins
|
|
# since they still don't implement multi-phase init.
|
|
module = '_imp'
|
|
require_builtin(module)
|
|
with self.subTest(f'{module}: not strict'):
|
|
self.check_compatible_here(module, strict=False)
|
|
with self.subTest(f'{module}: strict, not fresh'):
|
|
self.check_compatible_here(module, strict=True)
|
|
|
|
@cpython_only
|
|
def test_frozen_compat(self):
|
|
module = '_frozen_importlib'
|
|
require_frozen(module, skip=True)
|
|
if __import__(module).__spec__.origin != 'frozen':
|
|
raise unittest.SkipTest(f'{module} is unexpectedly not frozen')
|
|
with self.subTest(f'{module}: not strict'):
|
|
self.check_compatible_here(module, strict=False)
|
|
with self.subTest(f'{module}: strict, not fresh'):
|
|
self.check_compatible_here(module, strict=True)
|
|
|
|
@requires_singlephase_init
|
|
def test_single_init_extension_compat(self):
|
|
module = '_testsinglephase'
|
|
require_extension(module)
|
|
with self.subTest(f'{module}: not strict'):
|
|
self.check_compatible_here(module, strict=False)
|
|
with self.subTest(f'{module}: strict, not fresh'):
|
|
self.check_incompatible_here(module)
|
|
with self.subTest(f'{module}: strict, fresh'):
|
|
self.check_incompatible_fresh(module)
|
|
|
|
@unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
|
|
def test_multi_init_extension_compat(self):
|
|
module = '_testmultiphase'
|
|
require_extension(module)
|
|
with self.subTest(f'{module}: not strict'):
|
|
self.check_compatible_here(module, strict=False)
|
|
with self.subTest(f'{module}: strict, not fresh'):
|
|
self.check_compatible_here(module, strict=True)
|
|
with self.subTest(f'{module}: strict, fresh'):
|
|
self.check_compatible_fresh(module, strict=True)
|
|
|
|
@unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
|
|
def test_multi_init_extension_non_isolated_compat(self):
|
|
modname = '_test_non_isolated'
|
|
filename = _testmultiphase.__file__
|
|
loader = ExtensionFileLoader(modname, filename)
|
|
spec = importlib.util.spec_from_loader(modname, loader)
|
|
module = importlib.util.module_from_spec(spec)
|
|
loader.exec_module(module)
|
|
sys.modules[modname] = module
|
|
|
|
require_extension(module)
|
|
with self.subTest(f'{modname}: isolated'):
|
|
self.check_incompatible_here(modname, filename, isolated=True)
|
|
with self.subTest(f'{modname}: not isolated'):
|
|
self.check_incompatible_here(modname, filename, isolated=False)
|
|
with self.subTest(f'{modname}: not strict'):
|
|
self.check_compatible_here(modname, filename, strict=False)
|
|
|
|
@unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
|
|
def test_multi_init_extension_per_interpreter_gil_compat(self):
|
|
modname = '_test_shared_gil_only'
|
|
filename = _testmultiphase.__file__
|
|
loader = ExtensionFileLoader(modname, filename)
|
|
spec = importlib.util.spec_from_loader(modname, loader)
|
|
module = importlib.util.module_from_spec(spec)
|
|
loader.exec_module(module)
|
|
sys.modules[modname] = module
|
|
|
|
require_extension(module)
|
|
with self.subTest(f'{modname}: isolated, strict'):
|
|
self.check_incompatible_here(modname, filename, isolated=True)
|
|
with self.subTest(f'{modname}: not isolated, strict'):
|
|
self.check_compatible_here(modname, filename,
|
|
strict=True, isolated=False)
|
|
with self.subTest(f'{modname}: not isolated, not strict'):
|
|
self.check_compatible_here(modname, filename,
|
|
strict=False, isolated=False)
|
|
|
|
def test_python_compat(self):
|
|
module = 'threading'
|
|
require_pure_python(module)
|
|
with self.subTest(f'{module}: not strict'):
|
|
self.check_compatible_here(module, strict=False)
|
|
with self.subTest(f'{module}: strict, not fresh'):
|
|
self.check_compatible_here(module, strict=True)
|
|
with self.subTest(f'{module}: strict, fresh'):
|
|
self.check_compatible_fresh(module, strict=True)
|
|
|
|
@requires_singlephase_init
|
|
def test_singlephase_check_with_setting_and_override(self):
|
|
module = '_testsinglephase'
|
|
require_extension(module)
|
|
|
|
def check_compatible(setting, override):
|
|
out = self.run_here(
|
|
module,
|
|
check_singlephase_setting=setting,
|
|
check_singlephase_override=override,
|
|
)
|
|
self.assertEqual(out, b'okay')
|
|
|
|
def check_incompatible(setting, override):
|
|
out = self.run_here(
|
|
module,
|
|
check_singlephase_setting=setting,
|
|
check_singlephase_override=override,
|
|
)
|
|
self.assertNotEqual(out, b'okay')
|
|
|
|
with self.subTest('config: check enabled; override: enabled'):
|
|
check_incompatible(True, 1)
|
|
with self.subTest('config: check enabled; override: use config'):
|
|
check_incompatible(True, 0)
|
|
with self.subTest('config: check enabled; override: disabled'):
|
|
check_compatible(True, -1)
|
|
|
|
with self.subTest('config: check disabled; override: enabled'):
|
|
check_incompatible(False, 1)
|
|
with self.subTest('config: check disabled; override: use config'):
|
|
check_compatible(False, 0)
|
|
with self.subTest('config: check disabled; override: disabled'):
|
|
check_compatible(False, -1)
|
|
|
|
def test_isolated_config(self):
|
|
module = 'threading'
|
|
require_pure_python(module)
|
|
with self.subTest(f'{module}: strict, not fresh'):
|
|
self.check_compatible_here(module, strict=True, isolated=True)
|
|
with self.subTest(f'{module}: strict, fresh'):
|
|
self.check_compatible_fresh(module, strict=True, isolated=True)
|
|
|
|
|
|
class TestSinglePhaseSnapshot(ModuleSnapshot):
|
|
|
|
@classmethod
|
|
def from_module(cls, mod):
|
|
self = super().from_module(mod)
|
|
self.summed = mod.sum(1, 2)
|
|
self.lookedup = mod.look_up_self()
|
|
self.lookedup_id = id(self.lookedup)
|
|
self.state_initialized = mod.state_initialized()
|
|
if hasattr(mod, 'initialized_count'):
|
|
self.init_count = mod.initialized_count()
|
|
return self
|
|
|
|
SCRIPT_BODY = ModuleSnapshot.SCRIPT_BODY + textwrap.dedent('''
|
|
snapshot['module'].update(dict(
|
|
int_const=mod.int_const,
|
|
str_const=mod.str_const,
|
|
_module_initialized=mod._module_initialized,
|
|
))
|
|
snapshot.update(dict(
|
|
summed=mod.sum(1, 2),
|
|
lookedup_id=id(mod.look_up_self()),
|
|
state_initialized=mod.state_initialized(),
|
|
init_count=mod.initialized_count(),
|
|
has_spam=hasattr(mod, 'spam'),
|
|
spam=getattr(mod, 'spam', None),
|
|
))
|
|
''').rstrip()
|
|
|
|
@classmethod
|
|
def parse(cls, text):
|
|
self = super().parse(text)
|
|
if not self.has_spam:
|
|
del self.spam
|
|
del self.has_spam
|
|
return self
|
|
|
|
|
|
@requires_singlephase_init
|
|
class SinglephaseInitTests(unittest.TestCase):
|
|
|
|
NAME = '_testsinglephase'
|
|
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
spec = importlib.util.find_spec(cls.NAME)
|
|
from importlib.machinery import ExtensionFileLoader
|
|
cls.FILE = spec.origin
|
|
cls.LOADER = type(spec.loader)
|
|
assert cls.LOADER is ExtensionFileLoader
|
|
|
|
# Start fresh.
|
|
cls.clean_up()
|
|
|
|
def tearDown(self):
|
|
# Clean up the module.
|
|
self.clean_up()
|
|
|
|
@classmethod
|
|
def clean_up(cls):
|
|
name = cls.NAME
|
|
filename = cls.FILE
|
|
if name in sys.modules:
|
|
if hasattr(sys.modules[name], '_clear_globals'):
|
|
assert sys.modules[name].__file__ == filename
|
|
sys.modules[name]._clear_globals()
|
|
del sys.modules[name]
|
|
# Clear all internally cached data for the extension.
|
|
_testinternalcapi.clear_extension(name, filename)
|
|
|
|
#########################
|
|
# helpers
|
|
|
|
def add_module_cleanup(self, name):
|
|
def clean_up():
|
|
# Clear all internally cached data for the extension.
|
|
_testinternalcapi.clear_extension(name, self.FILE)
|
|
self.addCleanup(clean_up)
|
|
|
|
def _load_dynamic(self, name, path):
|
|
"""
|
|
Load an extension module.
|
|
"""
|
|
# This is essentially copied from the old imp module.
|
|
from importlib._bootstrap import _load
|
|
loader = self.LOADER(name, path)
|
|
|
|
# Issue bpo-24748: Skip the sys.modules check in _load_module_shim;
|
|
# always load new extension.
|
|
spec = importlib.util.spec_from_file_location(name, path,
|
|
loader=loader)
|
|
return _load(spec)
|
|
|
|
def load(self, name):
|
|
try:
|
|
already_loaded = self.already_loaded
|
|
except AttributeError:
|
|
already_loaded = self.already_loaded = {}
|
|
assert name not in already_loaded
|
|
mod = self._load_dynamic(name, self.FILE)
|
|
self.assertNotIn(mod, already_loaded.values())
|
|
already_loaded[name] = mod
|
|
return types.SimpleNamespace(
|
|
name=name,
|
|
module=mod,
|
|
snapshot=TestSinglePhaseSnapshot.from_module(mod),
|
|
)
|
|
|
|
def re_load(self, name, mod):
|
|
assert sys.modules[name] is mod
|
|
assert mod.__dict__ == mod.__dict__
|
|
reloaded = self._load_dynamic(name, self.FILE)
|
|
return types.SimpleNamespace(
|
|
name=name,
|
|
module=reloaded,
|
|
snapshot=TestSinglePhaseSnapshot.from_module(reloaded),
|
|
)
|
|
|
|
# subinterpreters
|
|
|
|
def add_subinterpreter(self):
|
|
interpid = _interpreters.create(isolated=False)
|
|
_interpreters.run_string(interpid, textwrap.dedent('''
|
|
import sys
|
|
import _testinternalcapi
|
|
'''))
|
|
def clean_up():
|
|
_interpreters.run_string(interpid, textwrap.dedent(f'''
|
|
name = {self.NAME!r}
|
|
if name in sys.modules:
|
|
sys.modules[name]._clear_globals()
|
|
_testinternalcapi.clear_extension(name, {self.FILE!r})
|
|
'''))
|
|
_interpreters.destroy(interpid)
|
|
self.addCleanup(clean_up)
|
|
return interpid
|
|
|
|
def import_in_subinterp(self, interpid=None, *,
|
|
postscript=None,
|
|
postcleanup=False,
|
|
):
|
|
name = self.NAME
|
|
|
|
if postcleanup:
|
|
import_ = 'import _testinternalcapi' if interpid is None else ''
|
|
postcleanup = f'''
|
|
{import_}
|
|
mod._clear_globals()
|
|
_testinternalcapi.clear_extension(name, {self.FILE!r})
|
|
'''
|
|
|
|
try:
|
|
pipe = self._pipe
|
|
except AttributeError:
|
|
r, w = pipe = self._pipe = os.pipe()
|
|
self.addCleanup(os.close, r)
|
|
self.addCleanup(os.close, w)
|
|
|
|
snapshot = TestSinglePhaseSnapshot.from_subinterp(
|
|
name,
|
|
interpid,
|
|
pipe=pipe,
|
|
import_first=True,
|
|
postscript=postscript,
|
|
postcleanup=postcleanup,
|
|
)
|
|
|
|
return types.SimpleNamespace(
|
|
name=name,
|
|
module=None,
|
|
snapshot=snapshot,
|
|
)
|
|
|
|
# checks
|
|
|
|
def check_common(self, loaded):
|
|
isolated = False
|
|
|
|
mod = loaded.module
|
|
if not mod:
|
|
# It came from a subinterpreter.
|
|
isolated = True
|
|
mod = loaded.snapshot.module
|
|
# mod.__name__ might not match, but the spec will.
|
|
self.assertEqual(mod.__spec__.name, loaded.name)
|
|
self.assertEqual(mod.__file__, self.FILE)
|
|
self.assertEqual(mod.__spec__.origin, self.FILE)
|
|
if not isolated:
|
|
self.assertTrue(issubclass(mod.error, Exception))
|
|
self.assertEqual(mod.int_const, 1969)
|
|
self.assertEqual(mod.str_const, 'something different')
|
|
self.assertIsInstance(mod._module_initialized, float)
|
|
self.assertGreater(mod._module_initialized, 0)
|
|
|
|
snap = loaded.snapshot
|
|
self.assertEqual(snap.summed, 3)
|
|
if snap.state_initialized is not None:
|
|
self.assertIsInstance(snap.state_initialized, float)
|
|
self.assertGreater(snap.state_initialized, 0)
|
|
if isolated:
|
|
# The "looked up" module is interpreter-specific
|
|
# (interp->imports.modules_by_index was set for the module).
|
|
self.assertEqual(snap.lookedup_id, snap.id)
|
|
self.assertEqual(snap.cached_id, snap.id)
|
|
with self.assertRaises(AttributeError):
|
|
snap.spam
|
|
else:
|
|
self.assertIs(snap.lookedup, mod)
|
|
self.assertIs(snap.cached, mod)
|
|
|
|
def check_direct(self, loaded):
|
|
# The module has its own PyModuleDef, with a matching name.
|
|
self.assertEqual(loaded.module.__name__, loaded.name)
|
|
self.assertIs(loaded.snapshot.lookedup, loaded.module)
|
|
|
|
def check_indirect(self, loaded, orig):
|
|
# The module re-uses another's PyModuleDef, with a different name.
|
|
assert orig is not loaded.module
|
|
assert orig.__name__ != loaded.name
|
|
self.assertNotEqual(loaded.module.__name__, loaded.name)
|
|
self.assertIs(loaded.snapshot.lookedup, loaded.module)
|
|
|
|
def check_basic(self, loaded, expected_init_count):
|
|
# m_size == -1
|
|
# The module loads fresh the first time and copies m_copy after.
|
|
snap = loaded.snapshot
|
|
self.assertIsNot(snap.state_initialized, None)
|
|
self.assertIsInstance(snap.init_count, int)
|
|
self.assertGreater(snap.init_count, 0)
|
|
self.assertEqual(snap.init_count, expected_init_count)
|
|
|
|
def check_with_reinit(self, loaded):
|
|
# m_size >= 0
|
|
# The module loads fresh every time.
|
|
pass
|
|
|
|
def check_fresh(self, loaded):
|
|
"""
|
|
The module had not been loaded before (at least since fully reset).
|
|
"""
|
|
snap = loaded.snapshot
|
|
# The module's init func was run.
|
|
# A copy of the module's __dict__ was stored in def->m_base.m_copy.
|
|
# The previous m_copy was deleted first.
|
|
# _PyRuntime.imports.extensions was set.
|
|
self.assertEqual(snap.init_count, 1)
|
|
# The global state was initialized.
|
|
# The module attrs were initialized from that state.
|
|
self.assertEqual(snap.module._module_initialized,
|
|
snap.state_initialized)
|
|
|
|
def check_semi_fresh(self, loaded, base, prev):
|
|
"""
|
|
The module had been loaded before and then reset
|
|
(but the module global state wasn't).
|
|
"""
|
|
snap = loaded.snapshot
|
|
# The module's init func was run again.
|
|
# A copy of the module's __dict__ was stored in def->m_base.m_copy.
|
|
# The previous m_copy was deleted first.
|
|
# The module globals did not get reset.
|
|
self.assertNotEqual(snap.id, base.snapshot.id)
|
|
self.assertNotEqual(snap.id, prev.snapshot.id)
|
|
self.assertEqual(snap.init_count, prev.snapshot.init_count + 1)
|
|
# The global state was updated.
|
|
# The module attrs were initialized from that state.
|
|
self.assertEqual(snap.module._module_initialized,
|
|
snap.state_initialized)
|
|
self.assertNotEqual(snap.state_initialized,
|
|
base.snapshot.state_initialized)
|
|
self.assertNotEqual(snap.state_initialized,
|
|
prev.snapshot.state_initialized)
|
|
|
|
def check_copied(self, loaded, base):
|
|
"""
|
|
The module had been loaded before and never reset.
|
|
"""
|
|
snap = loaded.snapshot
|
|
# The module's init func was not run again.
|
|
# The interpreter copied m_copy, as set by the other interpreter,
|
|
# with objects owned by the other interpreter.
|
|
# The module globals did not get reset.
|
|
self.assertNotEqual(snap.id, base.snapshot.id)
|
|
self.assertEqual(snap.init_count, base.snapshot.init_count)
|
|
# The global state was not updated since the init func did not run.
|
|
# The module attrs were not directly initialized from that state.
|
|
# The state and module attrs still match the previous loading.
|
|
self.assertEqual(snap.module._module_initialized,
|
|
snap.state_initialized)
|
|
self.assertEqual(snap.state_initialized,
|
|
base.snapshot.state_initialized)
|
|
|
|
#########################
|
|
# the tests
|
|
|
|
def test_cleared_globals(self):
|
|
loaded = self.load(self.NAME)
|
|
_testsinglephase = loaded.module
|
|
init_before = _testsinglephase.state_initialized()
|
|
|
|
_testsinglephase._clear_globals()
|
|
init_after = _testsinglephase.state_initialized()
|
|
init_count = _testsinglephase.initialized_count()
|
|
|
|
self.assertGreater(init_before, 0)
|
|
self.assertEqual(init_after, 0)
|
|
self.assertEqual(init_count, -1)
|
|
|
|
def test_variants(self):
|
|
# Exercise the most meaningful variants described in Python/import.c.
|
|
self.maxDiff = None
|
|
|
|
# Check the "basic" module.
|
|
|
|
name = self.NAME
|
|
expected_init_count = 1
|
|
with self.subTest(name):
|
|
loaded = self.load(name)
|
|
|
|
self.check_common(loaded)
|
|
self.check_direct(loaded)
|
|
self.check_basic(loaded, expected_init_count)
|
|
basic = loaded.module
|
|
|
|
# Check its indirect variants.
|
|
|
|
name = f'{self.NAME}_basic_wrapper'
|
|
self.add_module_cleanup(name)
|
|
expected_init_count += 1
|
|
with self.subTest(name):
|
|
loaded = self.load(name)
|
|
|
|
self.check_common(loaded)
|
|
self.check_indirect(loaded, basic)
|
|
self.check_basic(loaded, expected_init_count)
|
|
|
|
# Currently PyState_AddModule() always replaces the cached module.
|
|
self.assertIs(basic.look_up_self(), loaded.module)
|
|
self.assertEqual(basic.initialized_count(), expected_init_count)
|
|
|
|
# The cached module shouldn't change after this point.
|
|
basic_lookedup = loaded.module
|
|
|
|
# Check its direct variant.
|
|
|
|
name = f'{self.NAME}_basic_copy'
|
|
self.add_module_cleanup(name)
|
|
expected_init_count += 1
|
|
with self.subTest(name):
|
|
loaded = self.load(name)
|
|
|
|
self.check_common(loaded)
|
|
self.check_direct(loaded)
|
|
self.check_basic(loaded, expected_init_count)
|
|
|
|
# This should change the cached module for _testsinglephase.
|
|
self.assertIs(basic.look_up_self(), basic_lookedup)
|
|
self.assertEqual(basic.initialized_count(), expected_init_count)
|
|
|
|
# Check the non-basic variant that has no state.
|
|
|
|
name = f'{self.NAME}_with_reinit'
|
|
self.add_module_cleanup(name)
|
|
with self.subTest(name):
|
|
loaded = self.load(name)
|
|
|
|
self.check_common(loaded)
|
|
self.assertIs(loaded.snapshot.state_initialized, None)
|
|
self.check_direct(loaded)
|
|
self.check_with_reinit(loaded)
|
|
|
|
# This should change the cached module for _testsinglephase.
|
|
self.assertIs(basic.look_up_self(), basic_lookedup)
|
|
self.assertEqual(basic.initialized_count(), expected_init_count)
|
|
|
|
# Check the basic variant that has state.
|
|
|
|
name = f'{self.NAME}_with_state'
|
|
self.add_module_cleanup(name)
|
|
with self.subTest(name):
|
|
loaded = self.load(name)
|
|
self.addCleanup(loaded.module._clear_module_state)
|
|
|
|
self.check_common(loaded)
|
|
self.assertIsNot(loaded.snapshot.state_initialized, None)
|
|
self.check_direct(loaded)
|
|
self.check_with_reinit(loaded)
|
|
|
|
# This should change the cached module for _testsinglephase.
|
|
self.assertIs(basic.look_up_self(), basic_lookedup)
|
|
self.assertEqual(basic.initialized_count(), expected_init_count)
|
|
|
|
def test_basic_reloaded(self):
|
|
# m_copy is copied into the existing module object.
|
|
# Global state is not changed.
|
|
self.maxDiff = None
|
|
|
|
for name in [
|
|
self.NAME, # the "basic" module
|
|
f'{self.NAME}_basic_wrapper', # the indirect variant
|
|
f'{self.NAME}_basic_copy', # the direct variant
|
|
]:
|
|
self.add_module_cleanup(name)
|
|
with self.subTest(name):
|
|
loaded = self.load(name)
|
|
reloaded = self.re_load(name, loaded.module)
|
|
|
|
self.check_common(loaded)
|
|
self.check_common(reloaded)
|
|
|
|
# Make sure the original __dict__ did not get replaced.
|
|
self.assertEqual(id(loaded.module.__dict__),
|
|
loaded.snapshot.ns_id)
|
|
self.assertEqual(loaded.snapshot.ns.__dict__,
|
|
loaded.module.__dict__)
|
|
|
|
self.assertEqual(reloaded.module.__spec__.name, reloaded.name)
|
|
self.assertEqual(reloaded.module.__name__,
|
|
reloaded.snapshot.ns.__name__)
|
|
|
|
self.assertIs(reloaded.module, loaded.module)
|
|
self.assertIs(reloaded.module.__dict__, loaded.module.__dict__)
|
|
# It only happens to be the same but that's good enough here.
|
|
# We really just want to verify that the re-loaded attrs
|
|
# didn't change.
|
|
self.assertIs(reloaded.snapshot.lookedup,
|
|
loaded.snapshot.lookedup)
|
|
self.assertEqual(reloaded.snapshot.state_initialized,
|
|
loaded.snapshot.state_initialized)
|
|
self.assertEqual(reloaded.snapshot.init_count,
|
|
loaded.snapshot.init_count)
|
|
|
|
self.assertIs(reloaded.snapshot.cached, reloaded.module)
|
|
|
|
def test_with_reinit_reloaded(self):
|
|
# The module's m_init func is run again.
|
|
self.maxDiff = None
|
|
|
|
# Keep a reference around.
|
|
basic = self.load(self.NAME)
|
|
|
|
for name, has_state in [
|
|
(f'{self.NAME}_with_reinit', False), # m_size == 0
|
|
(f'{self.NAME}_with_state', True), # m_size > 0
|
|
]:
|
|
self.add_module_cleanup(name)
|
|
with self.subTest(name=name, has_state=has_state):
|
|
loaded = self.load(name)
|
|
if has_state:
|
|
self.addCleanup(loaded.module._clear_module_state)
|
|
|
|
reloaded = self.re_load(name, loaded.module)
|
|
if has_state:
|
|
self.addCleanup(reloaded.module._clear_module_state)
|
|
|
|
self.check_common(loaded)
|
|
self.check_common(reloaded)
|
|
|
|
# Make sure the original __dict__ did not get replaced.
|
|
self.assertEqual(id(loaded.module.__dict__),
|
|
loaded.snapshot.ns_id)
|
|
self.assertEqual(loaded.snapshot.ns.__dict__,
|
|
loaded.module.__dict__)
|
|
|
|
self.assertEqual(reloaded.module.__spec__.name, reloaded.name)
|
|
self.assertEqual(reloaded.module.__name__,
|
|
reloaded.snapshot.ns.__name__)
|
|
|
|
self.assertIsNot(reloaded.module, loaded.module)
|
|
self.assertNotEqual(reloaded.module.__dict__,
|
|
loaded.module.__dict__)
|
|
self.assertIs(reloaded.snapshot.lookedup, reloaded.module)
|
|
if loaded.snapshot.state_initialized is None:
|
|
self.assertIs(reloaded.snapshot.state_initialized, None)
|
|
else:
|
|
self.assertGreater(reloaded.snapshot.state_initialized,
|
|
loaded.snapshot.state_initialized)
|
|
|
|
self.assertIs(reloaded.snapshot.cached, reloaded.module)
|
|
|
|
# Currently, for every single-phrase init module loaded
|
|
# in multiple interpreters, those interpreters share a
|
|
# PyModuleDef for that object, which can be a problem.
|
|
# Also, we test with a single-phase module that has global state,
|
|
# which is shared by all interpreters.
|
|
|
|
@requires_subinterpreters
|
|
def test_basic_multiple_interpreters_main_no_reset(self):
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# without resetting; already loaded in main interpreter
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# At this point:
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# * alive in 0 interpreters
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# * module def may or may not be loaded already
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# * module def not in _PyRuntime.imports.extensions
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# * mod init func has not run yet (since reset, at least)
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# * m_copy not set (hasn't been loaded yet or already cleared)
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# * module's global state has not been initialized yet
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# (or already cleared)
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main_loaded = self.load(self.NAME)
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_testsinglephase = main_loaded.module
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# Attrs set after loading are not in m_copy.
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_testsinglephase.spam = 'spam, spam, spam, spam, eggs, and spam'
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self.check_common(main_loaded)
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self.check_fresh(main_loaded)
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interpid1 = self.add_subinterpreter()
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interpid2 = self.add_subinterpreter()
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# At this point:
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# * alive in 1 interpreter (main)
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# * module def in _PyRuntime.imports.extensions
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# * mod init func ran for the first time (since reset, at least)
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# * m_copy was copied from the main interpreter (was NULL)
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# * module's global state was initialized
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|
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# Use an interpreter that gets destroyed right away.
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loaded = self.import_in_subinterp()
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self.check_common(loaded)
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self.check_copied(loaded, main_loaded)
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# At this point:
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# * alive in 1 interpreter (main)
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# * module def still in _PyRuntime.imports.extensions
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# * mod init func ran again
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# * m_copy is NULL (claered when the interpreter was destroyed)
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# (was from main interpreter)
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# * module's global state was updated, not reset
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|
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# Use a subinterpreter that sticks around.
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loaded = self.import_in_subinterp(interpid1)
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self.check_common(loaded)
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self.check_copied(loaded, main_loaded)
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|
|
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# At this point:
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|
# * alive in 2 interpreters (main, interp1)
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# * module def still in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
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|
# * m_copy was copied from interp1
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|
# * module's global state was updated, not reset
|
|
|
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# Use a subinterpreter while the previous one is still alive.
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loaded = self.import_in_subinterp(interpid2)
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self.check_common(loaded)
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self.check_copied(loaded, main_loaded)
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|
|
|
# At this point:
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|
# * alive in 3 interpreters (main, interp1, interp2)
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|
# * module def still in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
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|
# * m_copy was copied from interp2 (was from interp1)
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|
# * module's global state was updated, not reset
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|
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@no_rerun(reason="rerun not possible; module state is never cleared (see gh-102251)")
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@requires_subinterpreters
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def test_basic_multiple_interpreters_deleted_no_reset(self):
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# without resetting; already loaded in a deleted interpreter
|
|
|
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# At this point:
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|
# * alive in 0 interpreters
|
|
# * module def may or may not be loaded already
|
|
# * module def not in _PyRuntime.imports.extensions
|
|
# * mod init func has not run yet (since reset, at least)
|
|
# * m_copy not set (hasn't been loaded yet or already cleared)
|
|
# * module's global state has not been initialized yet
|
|
# (or already cleared)
|
|
|
|
interpid1 = self.add_subinterpreter()
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|
interpid2 = self.add_subinterpreter()
|
|
|
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# First, load in the main interpreter but then completely clear it.
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loaded_main = self.load(self.NAME)
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loaded_main.module._clear_globals()
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_testinternalcapi.clear_extension(self.NAME, self.FILE)
|
|
|
|
# At this point:
|
|
# * alive in 0 interpreters
|
|
# * module def loaded already
|
|
# * module def was in _PyRuntime.imports.extensions, but cleared
|
|
# * mod init func ran for the first time (since reset, at least)
|
|
# * m_copy was set, but cleared (was NULL)
|
|
# * module's global state was initialized but cleared
|
|
|
|
# Start with an interpreter that gets destroyed right away.
|
|
base = self.import_in_subinterp(postscript='''
|
|
# Attrs set after loading are not in m_copy.
|
|
mod.spam = 'spam, spam, mash, spam, eggs, and spam'
|
|
''')
|
|
self.check_common(base)
|
|
self.check_fresh(base)
|
|
|
|
# At this point:
|
|
# * alive in 0 interpreters
|
|
# * module def in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
|
|
# * m_copy is NULL (claered when the interpreter was destroyed)
|
|
# * module's global state was initialized, not reset
|
|
|
|
# Use a subinterpreter that sticks around.
|
|
loaded_interp1 = self.import_in_subinterp(interpid1)
|
|
self.check_common(loaded_interp1)
|
|
self.check_semi_fresh(loaded_interp1, loaded_main, base)
|
|
|
|
# At this point:
|
|
# * alive in 1 interpreter (interp1)
|
|
# * module def still in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
|
|
# * m_copy was copied from interp1 (was NULL)
|
|
# * module's global state was updated, not reset
|
|
|
|
# Use a subinterpreter while the previous one is still alive.
|
|
loaded_interp2 = self.import_in_subinterp(interpid2)
|
|
self.check_common(loaded_interp2)
|
|
self.check_copied(loaded_interp2, loaded_interp1)
|
|
|
|
# At this point:
|
|
# * alive in 2 interpreters (interp1, interp2)
|
|
# * module def still in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
|
|
# * m_copy was copied from interp2 (was from interp1)
|
|
# * module's global state was updated, not reset
|
|
|
|
@requires_subinterpreters
|
|
def test_basic_multiple_interpreters_reset_each(self):
|
|
# resetting between each interpreter
|
|
|
|
# At this point:
|
|
# * alive in 0 interpreters
|
|
# * module def may or may not be loaded already
|
|
# * module def not in _PyRuntime.imports.extensions
|
|
# * mod init func has not run yet (since reset, at least)
|
|
# * m_copy not set (hasn't been loaded yet or already cleared)
|
|
# * module's global state has not been initialized yet
|
|
# (or already cleared)
|
|
|
|
interpid1 = self.add_subinterpreter()
|
|
interpid2 = self.add_subinterpreter()
|
|
|
|
# Use an interpreter that gets destroyed right away.
|
|
loaded = self.import_in_subinterp(
|
|
postscript='''
|
|
# Attrs set after loading are not in m_copy.
|
|
mod.spam = 'spam, spam, mash, spam, eggs, and spam'
|
|
''',
|
|
postcleanup=True,
|
|
)
|
|
self.check_common(loaded)
|
|
self.check_fresh(loaded)
|
|
|
|
# At this point:
|
|
# * alive in 0 interpreters
|
|
# * module def in _PyRuntime.imports.extensions
|
|
# * mod init func ran for the first time (since reset, at least)
|
|
# * m_copy is NULL (claered when the interpreter was destroyed)
|
|
# * module's global state was initialized, not reset
|
|
|
|
# Use a subinterpreter that sticks around.
|
|
loaded = self.import_in_subinterp(interpid1, postcleanup=True)
|
|
self.check_common(loaded)
|
|
self.check_fresh(loaded)
|
|
|
|
# At this point:
|
|
# * alive in 1 interpreter (interp1)
|
|
# * module def still in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
|
|
# * m_copy was copied from interp1 (was NULL)
|
|
# * module's global state was initialized, not reset
|
|
|
|
# Use a subinterpreter while the previous one is still alive.
|
|
loaded = self.import_in_subinterp(interpid2, postcleanup=True)
|
|
self.check_common(loaded)
|
|
self.check_fresh(loaded)
|
|
|
|
# At this point:
|
|
# * alive in 2 interpreters (interp2, interp2)
|
|
# * module def still in _PyRuntime.imports.extensions
|
|
# * mod init func ran again
|
|
# * m_copy was copied from interp2 (was from interp1)
|
|
# * module's global state was initialized, not reset
|
|
|
|
|
|
@cpython_only
|
|
class CAPITests(unittest.TestCase):
|
|
def test_pyimport_addmodule(self):
|
|
# gh-105922: Test PyImport_AddModuleRef(), PyImport_AddModule()
|
|
# and PyImport_AddModuleObject()
|
|
import _testcapi
|
|
for name in (
|
|
'sys', # frozen module
|
|
'test', # package
|
|
__name__, # package.module
|
|
):
|
|
_testcapi.check_pyimport_addmodule(name)
|
|
|
|
def test_pyimport_addmodule_create(self):
|
|
# gh-105922: Test PyImport_AddModuleRef(), create a new module
|
|
import _testcapi
|
|
name = 'dontexist'
|
|
self.assertNotIn(name, sys.modules)
|
|
self.addCleanup(unload, name)
|
|
|
|
mod = _testcapi.check_pyimport_addmodule(name)
|
|
self.assertIs(mod, sys.modules[name])
|
|
|
|
|
|
if __name__ == '__main__':
|
|
# Test needs to be a package, so we can do relative imports.
|
|
unittest.main()
|