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# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
from __future__ import annotations
'''Test cases for QtAsyncio'''
import os
import sys
import unittest
from concurrent.futures import ThreadPoolExecutor
from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from init_paths import init_test_paths
init_test_paths(False)
import asyncio
from PySide6.QtCore import QThread
from PySide6.QtAsyncio import QAsyncioEventLoopPolicy
class QAsyncioTestCaseExecutor(unittest.TestCase):
def setUp(self) -> None:
super().setUp()
self.executor_thread = None
def tearDown(self) -> None:
super().tearDown()
def blocking_function(self):
self.executor_thread = QThread.currentThread()
return 42
async def run_asyncio_executor(self):
main_thread = QThread.currentThread()
with ThreadPoolExecutor(max_workers=2) as executor:
result = await asyncio.get_running_loop().run_in_executor(
executor, self.blocking_function)
# Assert that we are back to the main thread.
self.assertEqual(QThread.currentThread(), main_thread)
# Assert that the blocking function was executed in a different thread.
self.assertNotEqual(self.executor_thread, main_thread)
self.assertEqual(result, 42)
def test_qasyncio_executor(self):
asyncio.set_event_loop_policy(QAsyncioEventLoopPolicy())
asyncio.run(self.run_asyncio_executor())
if __name__ == '__main__':
unittest.main()
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