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FIX Mock tokenizer in unit test to avoid HuggingFace network call #1402

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Merged
romanlutz merged 1 commit into from
Feb 25, 2026
Merged

FIX Mock tokenizer in unit test to avoid HuggingFace network call #1402

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15 changes: 12 additions & 3 deletions tests/unit/message_normalizer/test_chat_normalizer_tokenizer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,6 @@
from unittest.mock import MagicMock, patch

import pytest
from transformers import AutoTokenizer

from pyrit.message_normalizer import TokenizerTemplateNormalizer
from pyrit.models import Message, MessagePiece
Expand Down Expand Up @@ -116,8 +115,18 @@ class TestNormalizeStringAsync:

@pytest.fixture
def chatml_tokenizer_normalizer(self):
tokenizer = AutoTokenizer.from_pretrained("HuggingFaceH4/zephyr-7b-beta")
return TokenizerTemplateNormalizer(tokenizer=tokenizer)
def _apply_chatml_template(messages, tokenize=False, add_generation_prompt=False):
"""Simulate ChatML template formatting."""
result = ""
for msg in messages:
result += f"<|{msg['role']}|>\n{msg['content']}</s>\n"
if add_generation_prompt:
result += "<|assistant|>\n"
return result

mock_tokenizer = MagicMock()
mock_tokenizer.apply_chat_template.side_effect = _apply_chatml_template
return TokenizerTemplateNormalizer(tokenizer=mock_tokenizer)

@pytest.mark.asyncio
async def test_normalize_chatml(self, chatml_tokenizer_normalizer: TokenizerTemplateNormalizer):
Expand Down