from agentci.adapters.codex import _session_id


def test_extracts_thread_id_from_jsonl() -> None:
    output = '\n'.join(
        [
            '{"type":"turn.started"}',
            '{"type":"thread.started","thread_id":"abc-123"}',
            "not json",
        ]
    )
    assert _session_id(output) == "abc-123"


def test_missing_thread_id_returns_none() -> None:
    assert _session_id('{"type":"turn.completed"}') is None