infrastructure-resource-leak-unclosed-client-session-error-after-deleting-opens-8916b02b

THEN Implement cleanup using try...finally pattern to ensure the OpenSearch client is closed and the index is deleted. Alternatively, explicitly call close() on the async client after use.

@pytest.fixture()
def os_store(index_name: str) -> Generator[OpensearchVectorStore, None, None]:
    client = OpensearchVectorClient(endpoint="localhost:9200", index=index_name, dim=3)
    try:
        yield OpensearchVectorStore(client)
    finally:
        evt_loop.run_until_complete(client._os_client.indices.delete(index=index_name))
        evt_loop.run_until_complete(client._os_client.close())