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File Content: `test_threads.py`

"""Tests for asyncio/threads.py"""

import asyncio
import unittest

from contextvars import ContextVar
from unittest import mock


def tearDownModule():
    asyncio.set_event_loop_policy(None)


class ToThreadTests(unittest.IsolatedAsyncioTestCase):
    async def test_to_thread(self):
        result = await asyncio.to_thread(sum, [40, 2])
        self.assertEqual(result, 42)

    async def test_to_thread_exception(self):
        def raise_runtime():
            raise RuntimeError("test")

        with self.assertRaisesRegex(RuntimeError, "test"):
            await asyncio.to_thread(raise_runtime)

    async def test_to_thread_once(self):
        func = mock.Mock()

        await asyncio.to_thread(func)
        func.assert_called_once()

    async def test_to_thread_concurrent(self):
        func = mock.Mock()

        futs = []
        for _ in range(10):
            fut = asyncio.to_thread(func)
            futs.append(fut)
        await asyncio.gather(*futs)

        self.assertEqual(func.call_count, 10)

    async def test_to_thread_args_kwargs(self):
        # Unlike run_in_executor(), to_thread() should directly accept kwargs.
        func = mock.Mock()

        await asyncio.to_thread(func, 'test', something=True)

        func.assert_called_once_with('test', something=True)

    async def test_to_thread_contextvars(self):
        test_ctx = ContextVar('test_ctx')

        def get_ctx():
            return test_ctx.get()

        test_ctx.set('parrot')
        result = await asyncio.to_thread(get_ctx)

        self.assertEqual(result, 'parrot')


if __name__ == "__main__":
    unittest.main()

Name	Size	Permission
__pycache__	---	0755
__init__.py	283 bytes	0644
__main__.py	58 bytes	0644
echo.py	148 bytes	0644
echo2.py	123 bytes	0644
echo3.py	276 bytes	0644
functional.py	7477 bytes	0644
test_base_events.py	80963 bytes	0644
test_buffered_proto.py	2337 bytes	0644
test_context.py	1069 bytes	0644
test_events.py	106537 bytes	0644
test_futures.py	29937 bytes	0644
test_futures2.py	1621 bytes	0644
test_locks.py	30165 bytes	0644
test_pep492.py	5783 bytes	0644
test_proactor_events.py	37918 bytes	0644
test_protocols.py	2290 bytes	0644
test_queues.py	19049 bytes	0644
test_runners.py	5307 bytes	0644
test_selector_events.py	49116 bytes	0644
test_sendfile.py	21454 bytes	0644
test_server.py	3894 bytes	0644
test_sock_lowlevel.py	18502 bytes	0644
test_sslproto.py	26390 bytes	0644
test_streams.py	37387 bytes	0644
test_subprocess.py	26892 bytes	0644
test_tasks.py	114487 bytes	0644
test_threads.py	1626 bytes	0644
test_transports.py	3816 bytes	0644
test_unix_events.py	62581 bytes	0644
test_waitfor.py	8671 bytes	0644
test_windows_events.py	10945 bytes	0644
test_windows_utils.py	4236 bytes	0644
utils.py	17349 bytes	0644

File Content: test_threads.py

File Content: `test_threads.py`