test_async.py

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import pytest

asyncio = pytest.importorskip("asyncio")
m = pytest.importorskip("pybind11_tests.async_module")


@pytest.fixture
def event_loop():
    loop = asyncio.new_event_loop()
    yield loop
    loop.close()


async def get_await_result(x):
    return await x


def test_await(event_loop):
    assert 5 == event_loop.run_until_complete(get_await_result(m.SupportsAsync()))


def test_await_missing(event_loop):
    with pytest.raises(TypeError):
        event_loop.run_until_complete(get_await_result(m.DoesNotSupportAsync()))