mirror of
https://git.datalinker.icu/vllm-project/vllm.git
synced 2025-12-10 01:05:01 +08:00
121 lines
2.8 KiB
Python
121 lines
2.8 KiB
Python
# SPDX-License-Identifier: Apache-2.0
|
|
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
|
|
|
|
from typing import Any
|
|
|
|
import pytest
|
|
|
|
from vllm import LLM, SamplingParams
|
|
|
|
MODEL = "meta-llama/llama-2-7b-hf"
|
|
MAX_TOKENS = 200
|
|
|
|
|
|
def _test_stopping(
|
|
llm: LLM,
|
|
expected_output: str,
|
|
expected_reason: Any,
|
|
stop: list[str] | None = None,
|
|
stop_token_ids: list[int] | None = None,
|
|
include_in_output: bool = False,
|
|
) -> None:
|
|
output = llm.generate(
|
|
"A story about vLLM:\n",
|
|
SamplingParams(
|
|
temperature=0.0,
|
|
max_tokens=MAX_TOKENS,
|
|
stop=stop,
|
|
stop_token_ids=stop_token_ids,
|
|
include_stop_str_in_output=include_in_output,
|
|
),
|
|
)[0].outputs[0]
|
|
|
|
assert output is not None
|
|
assert output.text == expected_output
|
|
assert output.stop_reason == expected_reason
|
|
|
|
|
|
def _stop_basic(llm):
|
|
_test_stopping(
|
|
llm,
|
|
stop=["."],
|
|
include_in_output=False,
|
|
expected_output="VLLM is a 100% volunteer organization",
|
|
expected_reason=".",
|
|
)
|
|
|
|
_test_stopping(
|
|
llm,
|
|
stop=["."],
|
|
include_in_output=True,
|
|
expected_output="VLLM is a 100% volunteer organization.",
|
|
expected_reason=".",
|
|
)
|
|
|
|
|
|
def _stop_multi_tokens(llm):
|
|
_test_stopping(
|
|
llm,
|
|
stop=["group of peo", "short"],
|
|
include_in_output=False,
|
|
expected_output="VLLM is a 100% volunteer organization. We are a ",
|
|
expected_reason="group of peo",
|
|
)
|
|
|
|
_test_stopping(
|
|
llm,
|
|
stop=["group of peo", "short"],
|
|
include_in_output=True,
|
|
expected_output="VLLM is a 100% volunteer organization. We are a group of peo",
|
|
expected_reason="group of peo",
|
|
)
|
|
|
|
|
|
def _stop_partial_token(llm):
|
|
_test_stopping(
|
|
llm,
|
|
stop=["gani"],
|
|
include_in_output=False,
|
|
expected_output="VLLM is a 100% volunteer or",
|
|
expected_reason="gani",
|
|
)
|
|
|
|
_test_stopping(
|
|
llm,
|
|
stop=["gani"],
|
|
include_in_output=True,
|
|
expected_output="VLLM is a 100% volunteer organi",
|
|
expected_reason="gani",
|
|
)
|
|
|
|
|
|
def _stop_token_id(llm):
|
|
# token id 13013 => " organization"
|
|
|
|
_test_stopping(
|
|
llm,
|
|
stop_token_ids=[13013],
|
|
include_in_output=False,
|
|
expected_output="VLLM is a 100% volunteer",
|
|
expected_reason=13013,
|
|
)
|
|
|
|
_test_stopping(
|
|
llm,
|
|
stop_token_ids=[13013],
|
|
include_in_output=True,
|
|
expected_output="VLLM is a 100% volunteer organization",
|
|
expected_reason=13013,
|
|
)
|
|
|
|
|
|
@pytest.mark.skip_global_cleanup
|
|
def test_stop_strings():
|
|
llm = LLM(MODEL, enforce_eager=True)
|
|
|
|
_stop_basic(llm)
|
|
_stop_multi_tokens(llm)
|
|
_stop_partial_token(llm)
|
|
# FIXME: this does not respect include_in_output=False
|
|
# _stop_token_id(llm)
|