Method test_signature

Lib/test/test_threading.py:2322–2343

(self)

    locktype = staticmethod(threading._CRLock)

    def test_signature(self):  # gh-102029
        with warnings.catch_warnings(record=True) as warnings_log:
            threading.RLock()
        self.assertEqual(warnings_log, [])

        arg_types = [
            ((1,), {}),
            ((), {'a': 1}),
            ((1, 2), {'a': 1}),
        ]
        for args, kwargs in arg_types:
            with self.subTest(args=args, kwargs=kwargs):
                self.assertRaises(TypeError, threading.RLock, *args, **kwargs)

        # Subtypes with custom `__init__` are allowed (but, not recommended):
        class CustomRLock(self.locktype):
            def __init__(self, a, *, b) -> None:
                super().__init__()

        with warnings.catch_warnings(record=True) as warnings_log:
            CustomRLock(1, b=2)
        self.assertEqual(warnings_log, [])

class EventTests(lock_tests.EventTests):
    eventtype = staticmethod(threading.Event)