Files
ledgerdock/backend/tests/test_app_settings_provider_resilience.py

150 lines
5.8 KiB
Python

"""Unit coverage for resilient provider sanitization in persisted app settings."""
from __future__ import annotations
import sys
import unittest
from pathlib import Path
from types import ModuleType
from typing import Any
from unittest.mock import patch
BACKEND_ROOT = Path(__file__).resolve().parents[1]
if str(BACKEND_ROOT) not in sys.path:
sys.path.insert(0, str(BACKEND_ROOT))
if "pydantic_settings" not in sys.modules:
pydantic_settings_stub = ModuleType("pydantic_settings")
class _BaseSettings:
"""Minimal BaseSettings replacement for dependency-light unit test execution."""
def __init__(self, **kwargs: object) -> None:
for key, value in kwargs.items():
setattr(self, key, value)
def _settings_config_dict(**kwargs: object) -> dict[str, object]:
"""Returns configuration values using dict semantics expected by settings module."""
return kwargs
pydantic_settings_stub.BaseSettings = _BaseSettings
pydantic_settings_stub.SettingsConfigDict = _settings_config_dict
sys.modules["pydantic_settings"] = pydantic_settings_stub
from app.services import app_settings
def _sample_current_payload() -> dict[str, Any]:
"""Builds a sanitized payload used as in-memory persistence fixture for update tests."""
return app_settings._sanitize_settings(app_settings._default_settings())
class AppSettingsProviderResilienceTests(unittest.TestCase):
"""Verifies read-path resilience for corrupt persisted providers without weakening writes."""
def test_sanitize_settings_skips_invalid_persisted_provider_entries(self) -> None:
"""Invalid persisted providers are skipped and tasks rebind to remaining valid providers."""
payload = {
"providers": [
{
"id": "insecure-provider",
"label": "Insecure Provider",
"provider_type": "openai_compatible",
"base_url": "http://api.openai.com/v1",
"timeout_seconds": 45,
"api_key": "",
},
{
"id": "secure-provider",
"label": "Secure Provider",
"provider_type": "openai_compatible",
"base_url": "https://api.openai.com/v1",
"timeout_seconds": 45,
"api_key": "",
},
],
"tasks": {
app_settings.TASK_OCR_HANDWRITING: {"provider_id": "insecure-provider"},
app_settings.TASK_SUMMARY_GENERATION: {"provider_id": "insecure-provider"},
app_settings.TASK_ROUTING_CLASSIFICATION: {"provider_id": "insecure-provider"},
},
}
sanitized = app_settings._sanitize_settings(payload)
self.assertEqual([provider["id"] for provider in sanitized["providers"]], ["secure-provider"])
self.assertEqual(
sanitized["tasks"][app_settings.TASK_OCR_HANDWRITING]["provider_id"],
"secure-provider",
)
self.assertEqual(
sanitized["tasks"][app_settings.TASK_SUMMARY_GENERATION]["provider_id"],
"secure-provider",
)
self.assertEqual(
sanitized["tasks"][app_settings.TASK_ROUTING_CLASSIFICATION]["provider_id"],
"secure-provider",
)
def test_sanitize_settings_uses_default_provider_when_all_persisted_entries_are_invalid(self) -> None:
"""Default provider is restored when all persisted provider rows are invalid."""
payload = {
"providers": [
{
"id": "insecure-provider",
"label": "Insecure Provider",
"provider_type": "openai_compatible",
"base_url": "http://api.openai.com/v1",
"timeout_seconds": 45,
"api_key": "",
}
]
}
sanitized = app_settings._sanitize_settings(payload)
defaults = app_settings._default_settings()
default_provider_id = defaults["providers"][0]["id"]
self.assertEqual(sanitized["providers"][0]["id"], default_provider_id)
self.assertEqual(sanitized["providers"][0]["base_url"], defaults["providers"][0]["base_url"])
self.assertEqual(
sanitized["tasks"][app_settings.TASK_OCR_HANDWRITING]["provider_id"],
default_provider_id,
)
self.assertEqual(
sanitized["tasks"][app_settings.TASK_SUMMARY_GENERATION]["provider_id"],
default_provider_id,
)
self.assertEqual(
sanitized["tasks"][app_settings.TASK_ROUTING_CLASSIFICATION]["provider_id"],
default_provider_id,
)
def test_update_app_settings_keeps_provider_base_url_validation_strict(self) -> None:
"""Provider write updates still reject invalid base URLs instead of silently sanitizing."""
current_payload = _sample_current_payload()
current_provider = current_payload["providers"][0]
provider_update = {
"id": current_provider["id"],
"label": current_provider["label"],
"provider_type": current_provider["provider_type"],
"base_url": "http://api.openai.com/v1",
"timeout_seconds": current_provider["timeout_seconds"],
}
with (
patch.object(app_settings, "_read_raw_settings", return_value=current_payload),
patch.object(app_settings, "_write_settings") as write_settings_mock,
):
with self.assertRaises(app_settings.AppSettingsValidationError):
app_settings.update_app_settings(providers=[provider_update])
write_settings_mock.assert_not_called()
if __name__ == "__main__":
unittest.main()