test_prompt_validation.py

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project

import pytest
import os

from vllm import LLM
from ...utils import models_path_prefix


@pytest.fixture(autouse=True)
def v1(run_with_both_engines):
    # Simple autouse wrapper to run both engines for each test
    # This can be promoted up to conftest.py to run for every
    # test in a package
    pass


def test_empty_prompt():
    llm = LLM(model=os.path.join(models_path_prefix, "openai-community/gpt2"), enforce_eager=True)
    with pytest.raises(ValueError, match='decoder prompt cannot be empty'):
        llm.generate([""])


@pytest.mark.skip_v1
def test_out_of_vocab_token():
    llm = LLM(model=os.path.join(models_path_prefix, "openai-community/gpt2"), enforce_eager=True)
    with pytest.raises(ValueError, match='out of vocabulary'):
        llm.generate({"prompt_token_ids": [999999]})