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vllm-omni/tests/entrypoints/test_async_omni_diffusion.py
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Wu JIAZHENandjader 3fd4a4dc27 [Feat] Support step-boundary abort in diffusion (#1769)
Signed-off-by: jader <yjader@foxmail.com>
Signed-off-by: asukaqaq-s <1311722138@qq.com>
Co-authored-by: jader <yjader@foxmail.com>
2026-04-01 17:25:02 +08:00

114 lines
3.7 KiB
Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
import asyncio
import threading
from concurrent.futures import ThreadPoolExecutor
from types import SimpleNamespace
from unittest.mock import Mock
import pytest
import vllm_omni.diffusion.stage_diffusion_client as stage_diffusion_client_module
from vllm_omni.diffusion.data import DiffusionRequestAbortedError
from vllm_omni.diffusion.stage_diffusion_client import StageDiffusionClient
from vllm_omni.entrypoints.async_omni_diffusion import AsyncOmniDiffusion
from vllm_omni.inputs.data import OmniDiffusionSamplingParams
pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
def test_get_diffusion_od_config_returns_direct_config():
diffusion = object.__new__(AsyncOmniDiffusion)
diffusion.od_config = object()
assert diffusion.get_diffusion_od_config() is diffusion.od_config
def test_async_omni_diffusion_generate_aborts_engine_on_cancel():
async def run_test():
started = threading.Event()
release = threading.Event()
abort = Mock()
def step(request):
del request
started.set()
release.wait(timeout=5)
return [SimpleNamespace(request_id="req-1")]
diffusion = object.__new__(AsyncOmniDiffusion)
diffusion.engine = SimpleNamespace(step=step, abort=abort)
diffusion._executor = ThreadPoolExecutor(max_workers=1)
task = asyncio.create_task(
diffusion.generate(
prompt="hello",
sampling_params=OmniDiffusionSamplingParams(),
request_id="req-1",
)
)
try:
assert await asyncio.to_thread(started.wait, 1)
task.cancel()
with pytest.raises(asyncio.CancelledError):
await task
finally:
release.set()
diffusion._executor.shutdown(wait=True)
abort.assert_called_once_with("req-1")
asyncio.run(run_test())
def test_stage_diffusion_client_abort_requests_forwards_to_engine():
async def run_test():
aborted_request_ids: list[list[str]] = []
async def abort(request_ids):
aborted_request_ids.append(request_ids)
client = object.__new__(StageDiffusionClient)
client._engine = SimpleNamespace(abort=abort)
client._tasks = {}
task = asyncio.create_task(asyncio.sleep(60))
client._tasks["req-1"] = task
await client.abort_requests_async(["req-1", "req-2"])
with pytest.raises(asyncio.CancelledError):
await task
assert client._tasks == {}
assert aborted_request_ids == [["req-1", "req-2"]]
asyncio.run(run_test())
def test_stage_diffusion_client_run_treats_abort_as_normal_path(monkeypatch):
async def run_test():
async def generate(prompt, sampling_params, request_id):
del prompt, sampling_params
raise DiffusionRequestAbortedError(f"Request {request_id} aborted.")
info = Mock()
exception = Mock()
monkeypatch.setattr(stage_diffusion_client_module.logger, "info", info)
monkeypatch.setattr(stage_diffusion_client_module.logger, "exception", exception)
client = object.__new__(StageDiffusionClient)
client.stage_id = 3
client._engine = SimpleNamespace(generate=generate)
client._output_queue = asyncio.Queue()
client._tasks = {"req-1": object()}
await client._run("req-1", "prompt", OmniDiffusionSamplingParams())
assert client._output_queue.empty()
assert client._tasks == {}
info.assert_called_once()
exception.assert_not_called()
asyncio.run(run_test())