unsloth/studio/backend/tests/test_trained_model_scan.py
Datta Nimmaturi dccc0ebada
[Studio] Show non exported models in chat UI (#4892)
* Show non exported models in chat UI

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Distinguish b/w LoRa and full fine tune saves. Cleanup

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Roland Tannous <115670425+rolandtannous@users.noreply.github.com>
2026-04-14 15:03:58 +04:00

101 lines
3.3 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-only
# Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
"""Tests for Studio trained-model discovery used by Chat."""
import json
from pathlib import Path
import sys
import types as _types
import importlib
_BACKEND_DIR = str(Path(__file__).resolve().parent.parent)
if _BACKEND_DIR not in sys.path:
sys.path.insert(0, _BACKEND_DIR)
_loggers_stub = _types.ModuleType("loggers")
_loggers_stub.get_logger = lambda name: __import__("logging").getLogger(name)
sys.modules.setdefault("loggers", _loggers_stub)
from unittest.mock import patch
from utils.models.model_config import (
ModelConfig,
get_base_model_from_checkpoint,
get_base_model_from_lora,
scan_trained_models,
)
def test_scan_trained_models_includes_lora_and_full_finetune_outputs(tmp_path: Path):
lora_dir = tmp_path / "unsloth_SmolLM-135M_1775412608"
lora_dir.mkdir()
(lora_dir / "adapter_config.json").write_text(
json.dumps({"base_model_name_or_path": "HuggingFaceTB/SmolLM-135M"})
)
(lora_dir / "adapter_model.safetensors").write_bytes(b"")
full_dir = tmp_path / "unsloth_SmolLM-135M_full_1775412609"
full_dir.mkdir()
(full_dir / "config.json").write_text(
json.dumps({"_name_or_path": "HuggingFaceTB/SmolLM-135M"})
)
(full_dir / "model.safetensors").write_bytes(b"")
found = {
name: (path, model_type)
for name, path, model_type in scan_trained_models(str(tmp_path))
}
assert found[lora_dir.name] == (str(lora_dir), "lora")
assert found[full_dir.name] == (str(full_dir), "merged")
def test_get_base_model_from_checkpoint_falls_back_to_full_finetune_config(
tmp_path: Path,
):
(tmp_path / "config.json").write_text(
json.dumps({"_name_or_path": "HuggingFaceTB/SmolLM-135M"})
)
(tmp_path / "model.safetensors").write_bytes(b"")
assert get_base_model_from_checkpoint(str(tmp_path)) == "HuggingFaceTB/SmolLM-135M"
def test_get_base_model_from_lora_rejects_full_finetune_dirs(tmp_path: Path):
(tmp_path / "config.json").write_text(
json.dumps({"_name_or_path": "HuggingFaceTB/SmolLM-135M"})
)
(tmp_path / "model.safetensors").write_bytes(b"")
assert get_base_model_from_lora(str(tmp_path)) is None
@patch("utils.models.model_config.is_audio_input_type", return_value = False)
@patch("utils.models.model_config.detect_audio_type", return_value = None)
@patch("utils.models.model_config.is_vision_model", return_value = False)
def test_model_config_full_finetune_local_path_is_not_lora(
_mock_vision,
_mock_audio_type,
_mock_audio_input,
tmp_path: Path,
):
(tmp_path / "config.json").write_text(
json.dumps({"_name_or_path": "unsloth/Qwen3-4B"})
)
(tmp_path / "model.safetensors").write_bytes(b"")
config = ModelConfig.from_identifier(str(tmp_path))
assert config is not None
assert config.is_lora is False
assert config.base_model is None
def test_scan_trained_loras_aliases_scan_trained_models():
utils_models = importlib.import_module("utils.models")
core_module = importlib.import_module("core")
assert utils_models.scan_trained_loras is utils_models.scan_trained_models
assert core_module.scan_trained_loras is core_module.scan_trained_models