vllm/tests/entrypoints/openai/test_models.py

import openai  # use the official client for correctness check
import pytest
# using Ray for overall ease of process management, parallel requests,
# and debugging.
import ray
# downloading lora to test lora requests
from huggingface_hub import snapshot_download

from ...utils import VLLM_PATH, RemoteOpenAIServer

# any model with a chat template should work here
MODEL_NAME = "HuggingFaceH4/zephyr-7b-beta"
# technically this needs Mistral-7B-v0.1 as base, but we're not testing
# generation quality here
LORA_NAME = "typeof/zephyr-7b-beta-lora"


@pytest.fixture(scope="module")
def zephyr_lora_files():
    return snapshot_download(repo_id=LORA_NAME)


@pytest.fixture(scope="module")
def ray_ctx():
    ray.init(runtime_env={"working_dir": VLLM_PATH})
    yield
    ray.shutdown()


@pytest.fixture(scope="module")
def server(zephyr_lora_files, ray_ctx):
    return RemoteOpenAIServer([
        "--model",
        MODEL_NAME,
        # use half precision for speed and memory savings in CI environment
        "--dtype",
        "bfloat16",
        "--max-model-len",
        "8192",
        "--enforce-eager",
        # lora config below
        "--enable-lora",
        "--lora-modules",
        f"zephyr-lora={zephyr_lora_files}",
        f"zephyr-lora2={zephyr_lora_files}",
        "--max-lora-rank",
        "64",
        "--max-cpu-loras",
        "2",
        "--max-num-seqs",
        "128",
    ])


@pytest.fixture(scope="module")
def client(server):
    return server.get_async_client()


@pytest.mark.asyncio
async def test_check_models(client: openai.AsyncOpenAI):
    models = await client.models.list()
    models = models.data
    served_model = models[0]
    lora_models = models[1:]
    assert served_model.id == MODEL_NAME
    assert all(model.root == MODEL_NAME for model in models)
    assert lora_models[0].id == "zephyr-lora"
    assert lora_models[1].id == "zephyr-lora2"