vllm/tests/tool_use/test_deepseekv31_tool_parser.py
Chauncey c02fccdbd2
[Refactor] Lazy import tool_parser (#27974)
Signed-off-by: chaunceyjiang <chaunceyjiang@gmail.com>
2025-11-04 10:10:10 +08:00

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# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
import pytest
from vllm.entrypoints.openai.tool_parsers.deepseekv31_tool_parser import (
DeepSeekV31ToolParser,
)
from vllm.transformers_utils.tokenizer import get_tokenizer
MODEL = "deepseek-ai/DeepSeek-V3.1"
@pytest.fixture(scope="module")
def deepseekv31_tokenizer():
return get_tokenizer(tokenizer_name=MODEL)
@pytest.fixture
def parser(deepseekv31_tokenizer):
return DeepSeekV31ToolParser(deepseekv31_tokenizer)
def test_extract_tool_calls_with_tool(parser):
model_output = (
"normal text"
+ "<tool▁calls▁begin>"
+ '<tool▁call▁begin>foo<tool▁sep>{"x":1}<tool▁call▁end>'
+ "<tool▁calls▁end>"
)
result = parser.extract_tool_calls(model_output, None)
assert result.tools_called
assert len(result.tool_calls) == 1
assert result.tool_calls[0].function.name == "foo"
assert result.tool_calls[0].function.arguments == '{"x":1}'
assert result.content == "normal text"
def test_extract_tool_calls_with_multiple_tools(parser):
model_output = (
"some prefix text"
+ "<tool▁calls▁begin>"
+ '<tool▁call▁begin>foo<tool▁sep>{"x":1}<tool▁call▁end>'
+ '<tool▁call▁begin>bar<tool▁sep>{"y":2}<tool▁call▁end>'
+ "<tool▁calls▁end>"
+ " some suffix text"
)
result = parser.extract_tool_calls(model_output, None)
assert result.tools_called
assert len(result.tool_calls) == 2
assert result.tool_calls[0].function.name == "foo"
assert result.tool_calls[0].function.arguments == '{"x":1}'
assert result.tool_calls[1].function.name == "bar"
assert result.tool_calls[1].function.arguments == '{"y":2}'
# prefix is content
assert result.content == "some prefix text"