import pytest

from vllm import LLM
from vllm.model_executor.utils import set_random_seed

from ....conftest import cleanup


@pytest.fixture
def baseline_llm_generator(common_llm_kwargs, per_test_common_llm_kwargs,
                           baseline_llm_kwargs, seed):
    return create_llm_generator(common_llm_kwargs, per_test_common_llm_kwargs,
                                baseline_llm_kwargs, seed)


@pytest.fixture
def test_llm_generator(common_llm_kwargs, per_test_common_llm_kwargs,
                       test_llm_kwargs, seed):
    return create_llm_generator(common_llm_kwargs, per_test_common_llm_kwargs,
                                test_llm_kwargs, seed)


def create_llm_generator(common_llm_kwargs, per_test_common_llm_kwargs,
                         distinct_llm_kwargs, seed):
    kwargs = {
        **common_llm_kwargs,
        **per_test_common_llm_kwargs,
        **distinct_llm_kwargs,
    }

    def generator_inner():
        llm = LLM(**kwargs)

        set_random_seed(seed)

        yield llm
        del llm
        cleanup()

    for llm in generator_inner():
        yield llm
        del llm
