`unitest.mock.create_autospec(async_def)` does not create functions valid for `inspect.iscoroutinefunction`

[graingert]

discovered while creating #94923

Bug report

import unittest.mock
import inspect
import asyncio
import sys

def main():
    async def demo():
        pass
    print(f"{inspect.iscoroutinefunction(unittest.mock.create_autospec(demo))=}")
    print(f"{asyncio.iscoroutinefunction(unittest.mock.create_autospec(demo))=}")


# this prints:
# inspect.iscoroutinefunction(unittest.mock.create_autospec(demo))=False
# asyncio.iscoroutinefunction(unittest.mock.create_autospec(demo))=True

if __name__ == "__main__":
    sys.exit(main())

see also #84753

Linked PRs

• gh-94924: support inspect.iscoroutinefunction in create_autospec(async_def) #94962

[graingert]

this will need backporting to 3.10 and 3.11 just like #84753