vllm/tests/plugins_tests/test_scheduler_plugins.py
Sibi a73e183e36
[Misc] Replace os environ to monkeypatch in test suite (#14516)
Signed-off-by: sibi <85477603+t-sibiraj@users.noreply.github.com>
Signed-off-by: Aaron Pham <contact@aarnphm.xyz>
Co-authored-by: Cyrus Leung <cyrus.tl.leung@gmail.com>
Co-authored-by: Aaron Pham <contact@aarnphm.xyz>
2025-03-16 20:35:57 -07:00

69 lines
2.2 KiB
Python

# SPDX-License-Identifier: Apache-2.0
import pytest
from vllm.core.scheduler import Scheduler
from vllm.engine.arg_utils import EngineArgs
from vllm.engine.llm_engine import LLMEngine
from vllm.sampling_params import SamplingParams
from vllm.v1.core.scheduler import Scheduler as V1Scheduler
from vllm.v1.engine.llm_engine import LLMEngine as V1LLMEngine
class DummyV0Scheduler(Scheduler):
def schedule(self):
raise Exception("Exception raised by DummyV0Scheduler")
class DummyV1Scheduler(V1Scheduler):
def schedule(self):
raise Exception("Exception raised by DummyV1Scheduler")
def test_scheduler_plugins_v0(monkeypatch: pytest.MonkeyPatch):
with monkeypatch.context() as m:
m.setenv("VLLM_USE_V1", "0")
with pytest.raises(Exception) as exception_info:
engine_args = EngineArgs(
model="facebook/opt-125m",
enforce_eager=True, # reduce test time
scheduler_cls=DummyV0Scheduler,
)
engine = LLMEngine.from_engine_args(engine_args=engine_args)
sampling_params = SamplingParams(max_tokens=1)
engine.add_request("0", "foo", sampling_params)
engine.step()
assert str(
exception_info.value) == "Exception raised by DummyV0Scheduler"
def test_scheduler_plugins_v1(monkeypatch: pytest.MonkeyPatch):
with monkeypatch.context() as m:
m.setenv("VLLM_USE_V1", "1")
# Explicitly turn off engine multiprocessing so
# that the scheduler runs in this process
m.setenv("VLLM_ENABLE_V1_MULTIPROCESSING", "0")
with pytest.raises(Exception) as exception_info:
engine_args = EngineArgs(
model="facebook/opt-125m",
enforce_eager=True, # reduce test time
scheduler_cls=DummyV1Scheduler,
)
engine = V1LLMEngine.from_engine_args(engine_args=engine_args)
sampling_params = SamplingParams(max_tokens=1)
engine.add_request("0", "foo", sampling_params)
engine.step()
assert str(
exception_info.value) == "Exception raised by DummyV1Scheduler"