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# Copyright 2014-2021 The aiosmtpd Developers
# SPDX-License-Identifier: Apache-2.0
"""Test other aspects of the server implementation."""
import asyncio
import warnings
from typing import Generator, Optional
import pytest
from aiosmtpd import _get_or_new_eventloop
@pytest.fixture(scope="module")
def close_existing_loop() -> Generator[Optional[asyncio.AbstractEventLoop], None, None]:
loop: Optional[asyncio.AbstractEventLoop]
with warnings.catch_warnings():
warnings.filterwarnings("error")
try:
loop = asyncio.get_event_loop()
except (DeprecationWarning, RuntimeError):
loop = None
if loop:
loop.stop()
loop.close()
asyncio.set_event_loop(None)
yield loop
else:
yield None
class TestInit:
def test_create_new_if_none(self, close_existing_loop):
old_loop = close_existing_loop
loop: Optional[asyncio.AbstractEventLoop]
loop = _get_or_new_eventloop()
assert loop is not None
assert loop is not old_loop
assert isinstance(loop, asyncio.AbstractEventLoop)
def test_not_create_new_if_exist(self, close_existing_loop):
old_loop = close_existing_loop
loop: Optional[asyncio.AbstractEventLoop]
loop = asyncio.new_event_loop()
assert loop is not old_loop
asyncio.set_event_loop(loop)
ret_loop = _get_or_new_eventloop()
assert ret_loop is not old_loop
assert ret_loop == loop
assert ret_loop is loop
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