langchain/tests/unit_tests/llms/test_loading.py

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"""Test LLM saving and loading functions."""
from pathlib import Path
from unittest.mock import patch
from langchain.llms.loading import load_llm
from tests.unit_tests.llms.fake_llm import FakeLLM
@patch("langchain.llms.loading.type_to_cls_dict", {"fake": FakeLLM})
def test_saving_loading_round_trip(tmp_path: Path) -> None:
"""Test saving/loading a Fake LLM."""
fake_llm = FakeLLM()
fake_llm.save(file_path=tmp_path / "fake_llm.yaml")
loaded_llm = load_llm(tmp_path / "fake_llm.yaml")
assert loaded_llm == fake_llm