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import pytest
from fastapi import HTTPException
from api.dependencies import (
cleanup_provider,
get_provider,
get_provider_for_type,
get_settings,
)
from config.nim import NimSettings
from providers.lmstudio import LMStudioProvider
from providers.nvidia_nim import NvidiaNimProvider
from providers.open_router import OpenRouterProvider
def _make_mock_settings(**overrides):
"""Create a mock settings object with all required fields for get_provider()."""
mock = MagicMock()
mock.model = "nvidia_nim/meta/llama3"
mock.provider_type = "nvidia_nim"
mock.nvidia_nim_api_key = "test_key"
mock.provider_rate_limit = 40
mock.provider_rate_window = 60
mock.provider_max_concurrency = 5
mock.open_router_api_key = "test_openrouter_key"
mock.lm_studio_base_url = "http://localhost:1234/v1"
mock.nim = NimSettings()
mock.http_read_timeout = 300.0
mock.http_write_timeout = 10.0
mock.http_connect_timeout = 2.0
for key, value in overrides.items():
setattr(mock, key, value)
return mock
@pytest.fixture(autouse=True)
def reset_provider():
"""Reset the global _providers registry between tests."""
import api.dependencies
saved = api.dependencies._providers
api.dependencies._providers = {}
yield
api.dependencies._providers = saved
@pytest.mark.asyncio
async def test_get_provider_singleton():
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
p1 = get_provider()
p2 = get_provider()
assert isinstance(p1, NvidiaNimProvider)
assert p1 is p2
@pytest.mark.asyncio
async def test_get_settings():
settings = get_settings()
assert settings is not None
# Verify it calls the internal _get_settings
with patch("api.dependencies._get_settings") as mock_get:
get_settings()
mock_get.assert_called_once()
@pytest.mark.asyncio
async def test_cleanup_provider():
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
provider = get_provider()
assert isinstance(provider, NvidiaNimProvider)
provider._client = AsyncMock()
await cleanup_provider()
provider._client.aclose.assert_called_once()
@pytest.mark.asyncio
async def test_cleanup_provider_no_client():
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
provider = get_provider()
if hasattr(provider, "_client"):
del provider._client
await cleanup_provider()
# Should not raise
@pytest.mark.asyncio
async def test_get_provider_open_router():
"""Test that provider_type=open_router returns OpenRouterProvider."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(provider_type="open_router")
provider = get_provider()
assert isinstance(provider, OpenRouterProvider)
assert provider._base_url == "https://openrouter.ai/api/v1"
assert provider._api_key == "test_openrouter_key"
@pytest.mark.asyncio
async def test_get_provider_lmstudio():
"""Test that provider_type=lmstudio returns LMStudioProvider."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(provider_type="lmstudio")
provider = get_provider()
assert isinstance(provider, LMStudioProvider)
assert provider._base_url == "http://localhost:1234/v1"
@pytest.mark.asyncio
async def test_get_provider_lmstudio_uses_lm_studio_base_url():
"""LM Studio provider uses lm_studio_base_url from settings."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(
provider_type="lmstudio",
lm_studio_base_url="http://custom:9999/v1",
)
provider = get_provider()
assert isinstance(provider, LMStudioProvider)
assert provider._base_url == "http://custom:9999/v1"
@pytest.mark.asyncio
async def test_get_provider_passes_http_timeouts_from_settings():
"""Provider receives http timeouts from settings when creating client."""
with (
patch("api.dependencies.get_settings") as mock_settings,
patch("providers.openai_compat.AsyncOpenAI") as mock_openai,
):
mock_settings.return_value = _make_mock_settings(
http_read_timeout=600.0,
http_write_timeout=20.0,
http_connect_timeout=5.0,
)
provider = get_provider()
assert isinstance(provider, NvidiaNimProvider)
call_kwargs = mock_openai.call_args[1]
timeout = call_kwargs["timeout"]
assert timeout.read == 600.0
assert timeout.write == 20.0
assert timeout.connect == 5.0
@pytest.mark.asyncio
async def test_get_provider_nvidia_nim_missing_api_key():
"""NVIDIA NIM with empty API key raises HTTPException 503."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(nvidia_nim_api_key="")
with pytest.raises(HTTPException) as exc_info:
get_provider()
assert exc_info.value.status_code == 503
assert "NVIDIA_NIM_API_KEY" in exc_info.value.detail
assert "build.nvidia.com" in exc_info.value.detail
@pytest.mark.asyncio
async def test_get_provider_nvidia_nim_whitespace_only_api_key():
"""NVIDIA NIM with whitespace-only API key raises HTTPException 503."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(nvidia_nim_api_key=" ")
with pytest.raises(HTTPException) as exc_info:
get_provider()
assert exc_info.value.status_code == 503
assert "NVIDIA_NIM_API_KEY" in exc_info.value.detail
@pytest.mark.asyncio
async def test_get_provider_open_router_missing_api_key():
"""OpenRouter with empty API key raises HTTPException 503."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(
provider_type="open_router",
open_router_api_key="",
)
with pytest.raises(HTTPException) as exc_info:
get_provider()
assert exc_info.value.status_code == 503
assert "OPENROUTER_API_KEY" in exc_info.value.detail
assert "openrouter.ai" in exc_info.value.detail
@pytest.mark.asyncio
async def test_get_provider_unknown_type():
"""Test that unknown provider_type raises ValueError."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(provider_type="unknown")
with pytest.raises(ValueError, match="Unknown provider_type"):
get_provider()
@pytest.mark.asyncio
async def test_cleanup_provider_aclose_raises():
"""cleanup_provider handles aclose() raising an exception."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
provider = get_provider()
assert isinstance(provider, NvidiaNimProvider)
provider._client = AsyncMock()
provider._client.aclose = AsyncMock(side_effect=RuntimeError("cleanup failed"))
# Should propagate the error
with pytest.raises(RuntimeError, match="cleanup failed"):
await cleanup_provider()
# --- Provider Registry Tests ---
@pytest.mark.asyncio
async def test_get_provider_for_type_caches():
"""get_provider_for_type returns cached provider on second call."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
p1 = get_provider_for_type("nvidia_nim")
p2 = get_provider_for_type("nvidia_nim")
assert p1 is p2
assert isinstance(p1, NvidiaNimProvider)
@pytest.mark.asyncio
async def test_get_provider_for_type_different_types():
"""get_provider_for_type creates separate providers per type."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
nim = get_provider_for_type("nvidia_nim")
lmstudio = get_provider_for_type("lmstudio")
assert isinstance(nim, NvidiaNimProvider)
assert isinstance(lmstudio, LMStudioProvider)
assert nim is not lmstudio
@pytest.mark.asyncio
async def test_get_provider_for_type_missing_key_raises_503():
"""get_provider_for_type raises HTTPException 503 for missing API key."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings(open_router_api_key="")
with pytest.raises(HTTPException) as exc_info:
get_provider_for_type("open_router")
assert exc_info.value.status_code == 503
assert "OPENROUTER_API_KEY" in exc_info.value.detail
@pytest.mark.asyncio
async def test_cleanup_provider_cleans_all():
"""cleanup_provider cleans up all providers in the registry."""
with patch("api.dependencies.get_settings") as mock_settings:
mock_settings.return_value = _make_mock_settings()
nim = get_provider_for_type("nvidia_nim")
lmstudio = get_provider_for_type("lmstudio")
assert isinstance(nim, NvidiaNimProvider)
assert isinstance(lmstudio, LMStudioProvider)
nim._client = AsyncMock()
lmstudio._client = AsyncMock()
await cleanup_provider()
nim._client.aclose.assert_called_once()
lmstudio._client.aclose.assert_called_once()
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