Method setUpClass

Lib/test/test_peg_generator/test_c_parser.py:78–112

(cls)

    @classmethod
    def setUpClass(cls):
        if cls._has_run:
            # Since gh-104798 (Use setuptools in peg-generator and reenable
            # tests), this test case has been producing ref leaks. Initial
            # debugging points to bug(s) in setuptools and/or importlib.
            # See gh-105063 for more info.
            raise unittest.SkipTest("gh-105063: can not rerun because of ref. leaks")
        cls._has_run = True

        # When running under regtest, a separate tempdir is used
        # as the current directory and watched for left-overs.
        # Reusing that as the base for temporary directories
        # ensures everything is cleaned up properly and
        # cleans up afterwards if not (with warnings).
        cls.tmp_base = os.getcwd()
        if os.path.samefile(cls.tmp_base, os_helper.SAVEDCWD):
            cls.tmp_base = None
        # Create a directory for the reuseable static library part of
        # the pegen extension build process.  This greatly reduces the
        # runtime overhead of spawning compiler processes.
        cls.library_dir = tempfile.mkdtemp(dir=cls.tmp_base)
        cls.addClassCleanup(shutil.rmtree, cls.library_dir)

        with contextlib.ExitStack() as stack:
            python_exe = stack.enter_context(support.setup_venv_with_pip_setuptools("venv"))
            platlib_path = subprocess.check_output(
                [python_exe, "-c", "import sysconfig; print(sysconfig.get_path('platlib'))"],
                text=True,
            ).strip()
            purelib_path = subprocess.check_output(
                [python_exe, "-c", "import sysconfig; print(sysconfig.get_path('purelib'))"],
                text=True,
            ).strip()
            stack.enter_context(import_helper.DirsOnSysPath(platlib_path, purelib_path))
            cls.addClassCleanup(stack.pop_all().close)

    @support.requires_venv_with_pip()
    def setUp(self):