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# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
# For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE
# Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt
from __future__ import annotations
import unittest
import astroid
from astroid import builder
from astroid.bases import Instance
class ThreadingBrainTest(unittest.TestCase):
def test_lock(self) -> None:
lock_instance = builder.extract_node(
"""
import threading
threading.Lock()
"""
)
inferred = next(lock_instance.infer())
self.assert_is_valid_lock(inferred)
acquire_method = inferred.getattr("acquire")[0]
parameters = [param.name for param in acquire_method.args.args[1:]]
assert parameters == ["blocking", "timeout"]
assert inferred.getattr("locked")
def test_rlock(self) -> None:
self._test_lock_object("RLock")
def test_semaphore(self) -> None:
self._test_lock_object("Semaphore")
def test_boundedsemaphore(self) -> None:
self._test_lock_object("BoundedSemaphore")
def _test_lock_object(self, object_name: str) -> None:
lock_instance = builder.extract_node(
f"""
import threading
threading.{object_name}()
"""
)
inferred = next(lock_instance.infer())
self.assert_is_valid_lock(inferred)
def assert_is_valid_lock(self, inferred: Instance) -> None:
self.assertIsInstance(inferred, astroid.Instance)
self.assertEqual(inferred.root().name, "threading")
for method in ("acquire", "release", "__enter__", "__exit__"):
self.assertIsInstance(next(inferred.igetattr(method)), astroid.BoundMethod)
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