Test does not pass: tests.unittests.client.test_runner.test_runner_inside_childprocess

[notoraptor]

Describe the bug
A unit test does not pass: tests.unittests.client.test_runner.test_runner_inside_childprocess

Expected behavior
Test should finish. Instead we have an infinite loop.

@pytest.mark.skipif(
    sys.version_info >= (3, 14),
    reason="Infinite execution time in Python 3.14+. "
    "NB: Python 3.14 changes multiprocessing start method from fork to spawn. "
    "Could it be related?",
)
def test_runner_inside_childprocess():
    """Runner can execute inside a child process"""
    pid = os.fork()

    # execute runner in the child process
    if pid == 0:
        run_runner()
        os._exit(0)
    else:
        # parent process wait for child process to end
        wpid, exit_status = os.wait()
        assert wpid == pid
        assert exit_status == 0

Steps to reproduce

tox -e py-all -- tests/unittests/client/test_runner.py::test_runner_inside_childprocess

Environment (please complete the following information):

• OS: Ubuntu 20.04
• Python version: 3.10+
• Oríon version: develop
• Database: MongoDB