cpython/Lib/test/test_asyncio/test_futures2.py

19 lines
694 B
Python

# IsolatedAsyncioTestCase based tests
import asyncio
import unittest
class FutureTests(unittest.IsolatedAsyncioTestCase):
async def test_recursive_repr_for_pending_tasks(self):
# The call crashes if the guard for recursive call
# in base_futures:_future_repr_info is absent
# See Also: https://bugs.python.org/issue42183
async def func():
return asyncio.all_tasks()
# The repr() call should not raise RecursiveError at first.
# The check for returned string is not very reliable but
# exact comparison for the whole string is even weaker.
self.assertIn('...', repr(await asyncio.wait_for(func(), timeout=10)))