LLaMA-Factory/tests/e2e/test_sglang.py
Qiaolin Yu 30038d9ce7
[inference] support sglang backend (#7278)
* Mimic SGLang offline Engine

* Add more tests and args

* Pass all current tests

* Clean Code

* fix sample_params

* clean code

* Fix Stream Chat

* change sglang from engine mode to server mode

* fix

* Fix Review Issues

* Use SGLang Built-In Utilities

* Fix test SGLang

* Some Doc Issue

* fix sglang engine

* add readme

---------

Co-authored-by: Jin Pan <jpan236@wisc.edu>
Co-authored-by: hiyouga <hiyouga@buaa.edu.cn>
2025-03-15 04:37:58 +08:00

72 lines
1.9 KiB
Python

# Copyright 2025 the LlamaFactory team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
import pytest
from llamafactory.chat import ChatModel
from llamafactory.extras.packages import is_sglang_available
MODEL_NAME = "meta-llama/Llama-3.2-1B-Instruct"
INFER_ARGS = {
"model_name_or_path": MODEL_NAME,
"finetuning_type": "lora",
"template": "llama3",
"infer_dtype": "float16",
"infer_backend": "sglang",
"do_sample": False,
"max_new_tokens": 1,
}
MESSAGES = [
{"role": "user", "content": "Hi"},
]
@pytest.mark.skipif(not is_sglang_available(), reason="SGLang is not installed")
def test_chat():
r"""Test the SGLang engine's basic chat functionality."""
chat_model = ChatModel(INFER_ARGS)
response = chat_model.chat(MESSAGES)[0]
# TODO: Change to EXPECTED_RESPONSE
print(response.response_text)
@pytest.mark.skipif(not is_sglang_available(), reason="SGLang is not installed")
def test_stream_chat():
r"""Test the SGLang engine's streaming chat functionality."""
chat_model = ChatModel(INFER_ARGS)
response = ""
for token in chat_model.stream_chat(MESSAGES):
response += token
print("Complete response:", response)
assert response, "Should receive a non-empty response"
# Run tests if executed directly
if __name__ == "__main__":
if not is_sglang_available():
print("SGLang is not available. Please install it.")
sys.exit(1)
test_chat()
test_stream_chat()