Files
FastDeploy/tests/utils/test_clamp_prompt_logprobs.py
2025-12-04 10:38:51 +08:00

139 lines
5.1 KiB
Python

"""
# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
#
# 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 unittest
from fastdeploy.utils import clamp_prompt_logprobs
from fastdeploy.worker.output import Logprob
class TestClampPromptLogprobs(unittest.TestCase):
def test_none_input(self):
"""Test case when input is None"""
result = clamp_prompt_logprobs(None)
self.assertIsNone(result)
def test_empty_list(self):
"""Test empty list input"""
result = clamp_prompt_logprobs([])
self.assertEqual(result, [])
def test_normal_logprobs(self):
"""Test normal logprobs values (without -inf)"""
logprob_dict = {
1: Logprob(logprob=-2.5, rank=1, decoded_token="hello"),
2: Logprob(logprob=-1.0, rank=2, decoded_token="world"),
}
prompt_logprobs = [logprob_dict]
result = clamp_prompt_logprobs(prompt_logprobs)
# Original values should remain unchanged
self.assertEqual(result[0][1].logprob, -2.5)
self.assertEqual(result[0][2].logprob, -1.0)
def test_negative_inf_logprobs_gets_clamped(self):
"""Test that logprobs containing -inf get clamped to -9999.0"""
logprob_dict = {
1: Logprob(logprob=float("-inf"), rank=1, decoded_token="hello"),
2: Logprob(logprob=-1.0, rank=2, decoded_token="world"),
}
prompt_logprobs = [logprob_dict]
# Since Logprob is now a dataclass, its fields can be modified
result = clamp_prompt_logprobs(prompt_logprobs)
# The -inf value should be clamped to -9999.0
self.assertEqual(result[0][1].logprob, -9999.0)
self.assertEqual(result[0][2].logprob, -1.0) # unchanged
def test_multiple_negative_inf_gets_clamped(self):
"""Test that multiple -inf logprobs values get clamped to -9999.0"""
logprob_dict = {
1: Logprob(logprob=float("-inf"), rank=1, decoded_token="hello"),
2: Logprob(logprob=float("-inf"), rank=2, decoded_token="world"),
3: Logprob(logprob=-0.5, rank=3, decoded_token="test"),
}
prompt_logprobs = [logprob_dict]
# Since Logprob is now a dataclass, its fields can be modified
result = clamp_prompt_logprobs(prompt_logprobs)
# All -inf values should be clamped to -9999.0
self.assertEqual(result[0][1].logprob, -9999.0)
self.assertEqual(result[0][2].logprob, -9999.0)
self.assertEqual(result[0][3].logprob, -0.5) # unchanged
def test_none_dict_in_list(self):
"""Test case when list contains None"""
prompt_logprobs = [None]
result = clamp_prompt_logprobs(prompt_logprobs)
# None should be skipped
self.assertIsNone(result[0])
def test_multiple_dicts_normal_values(self):
"""Test multiple dictionaries case (without -inf)"""
logprob_dict1 = {
1: Logprob(logprob=-2.0, rank=1, decoded_token="hello"),
}
logprob_dict2 = {
2: Logprob(logprob=-2.0, rank=1, decoded_token="world"),
}
prompt_logprobs = [logprob_dict1, logprob_dict2]
result = clamp_prompt_logprobs(prompt_logprobs)
# Should return normally, values remain unchanged
self.assertEqual(result[0][1].logprob, -2.0)
self.assertEqual(result[1][2].logprob, -2.0)
def test_mixed_values_without_inf(self):
"""Test mixed values case (without -inf)"""
logprob_dict = {
1: Logprob(logprob=-9999.0, rank=1, decoded_token="hello"),
2: Logprob(logprob=-9999.0, rank=2, decoded_token="world"),
3: Logprob(logprob=0.0, rank=3, decoded_token="test"),
4: Logprob(logprob=-1.5, rank=4, decoded_token="again"),
}
prompt_logprobs = [logprob_dict]
result = clamp_prompt_logprobs(prompt_logprobs)
# All values should remain unchanged
self.assertEqual(result[0][1].logprob, -9999.0)
self.assertEqual(result[0][2].logprob, -9999.0)
self.assertEqual(result[0][3].logprob, 0.0)
self.assertEqual(result[0][4].logprob, -1.5)
def test_return_same_object(self):
"""Test that function returns the same object (in-place modification)"""
logprob_dict = {
1: Logprob(logprob=-2.0, rank=1, decoded_token="hello"),
}
prompt_logprobs = [logprob_dict]
result = clamp_prompt_logprobs(prompt_logprobs)
# Should return the same object (function performs in-place modification)
self.assertIs(result, prompt_logprobs)
self.assertIs(result[0], prompt_logprobs[0])
if __name__ == "__main__":
unittest.main()