66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
"""Tests for AsyncOmniEngine.try_get_output and try_get_output_async.
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Focuses on the critical behavior: when the orchestrator thread dies,
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subsequent attempts to collect output raise RuntimeError.
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"""
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import queue
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from unittest.mock import MagicMock
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import pytest
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from vllm_omni.engine.async_omni_engine import AsyncOmniEngine
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pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
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def _make_engine(output_queue, *, thread_alive: bool = True) -> AsyncOmniEngine:
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"""Create an AsyncOmniEngine bypassing __init__."""
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engine = object.__new__(AsyncOmniEngine)
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engine.output_queue = output_queue
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engine.orchestrator_thread = MagicMock(
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is_alive=MagicMock(return_value=thread_alive),
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)
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return engine
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def test_try_get_output_raises_after_orchestrator_dies():
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"""Draining remaining results then hitting an empty queue with a dead
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orchestrator must raise RuntimeError so callers know the pipeline is gone."""
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mock_queue = MagicMock()
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# First call succeeds; second call finds the queue empty.
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mock_queue.sync_q.get.side_effect = [
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{"type": "output", "request_id": "r1"},
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queue.Empty,
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]
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engine = _make_engine(mock_queue, thread_alive=True)
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# Collect the one buffered result.
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assert engine.try_get_output()["request_id"] == "r1"
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# Orchestrator thread crashes between polls.
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engine.orchestrator_thread.is_alive.return_value = False
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with pytest.raises(RuntimeError, match="Orchestrator died unexpectedly"):
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engine.try_get_output()
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@pytest.mark.asyncio
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async def test_try_get_output_async_raises_after_orchestrator_dies():
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"""Same scenario as above but for the async variant."""
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mock_queue = MagicMock()
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mock_queue.sync_q.get_nowait.side_effect = [
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{"type": "output", "request_id": "r1"},
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queue.Empty,
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]
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engine = _make_engine(mock_queue, thread_alive=True)
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assert (await engine.try_get_output_async())["request_id"] == "r1"
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engine.orchestrator_thread.is_alive.return_value = False
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with pytest.raises(RuntimeError, match="Orchestrator died unexpectedly"):
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await engine.try_get_output_async()
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