haiku.rag/tests/test_download_models.py
2026-04-24 14:42:53 +03:00

111 lines
3.6 KiB
Python

from contextlib import asynccontextmanager
from unittest.mock import AsyncMock, patch
import httpx
import pytest
from haiku.rag.client.downloads import download_models
from haiku.rag.config import Config
@pytest.fixture
def mock_to_thread():
"""Patch asyncio.to_thread to skip docling/tokenizer downloads."""
with patch("haiku.rag.client.downloads.asyncio.to_thread", new_callable=AsyncMock):
yield
@asynccontextmanager
async def _mock_httpx_client(stream_fn):
"""Create a mock httpx.AsyncClient context manager with a given stream function."""
mock_client = AsyncMock()
mock_client.stream = stream_fn
yield mock_client
async def test_download_models_ollama_connect_error(mock_to_thread):
"""When Ollama is not running, download_models raises ConnectionError."""
@asynccontextmanager
async def failing_stream(method, url, **kwargs):
raise httpx.ConnectError("All connection attempts failed")
yield # unreachable, but needed for generator syntax
with patch(
"haiku.rag.client.downloads.httpx.AsyncClient",
return_value=_mock_httpx_client(failing_stream),
):
with pytest.raises(
ConnectionError, match="Cannot connect to Ollama"
) as exc_info:
async for _ in download_models(Config):
pass
assert "ollama serve" in str(exc_info.value)
async def test_download_models_ollama_pulls_models(mock_to_thread):
"""download_models yields correct progress events for Ollama model pulls."""
stream_lines = [
'{"status": "pulling manifest"}',
"",
'{"status": "downloading", "digest": "sha256:abc", "total": 1000, "completed": 500}',
'{"status": "downloading", "digest": "sha256:abc", "total": 1000, "completed": 1000}',
"not valid json",
'{"status": "verifying sha256 digest"}',
'{"status": "writing manifest"}',
'{"status": "success"}',
]
@asynccontextmanager
async def mock_stream(method, url, **kwargs):
mock_resp = AsyncMock()
async def aiter_lines():
for line in stream_lines:
yield line
mock_resp.aiter_lines = aiter_lines
yield mock_resp
with patch(
"haiku.rag.client.downloads.httpx.AsyncClient",
return_value=_mock_httpx_client(mock_stream),
):
events = []
async for progress in download_models(Config):
events.append(progress)
# Default config has embeddings=qwen3-embedding:4b, qa/research=gpt-oss
ollama_models = {"gpt-oss", "qwen3-embedding:4b"}
ollama_events = [e for e in events if e.model in ollama_models]
pulling_events = [e for e in ollama_events if e.status == "pulling"]
done_events = [e for e in ollama_events if e.status == "done"]
download_events = [e for e in ollama_events if e.status == "downloading"]
assert len(pulling_events) == 2
assert len(done_events) == 2
assert len(download_events) > 0
for de in download_events:
assert de.digest == "sha256:abc"
assert de.total == 1000
assert de.completed > 0
async def test_download_models_no_ollama_models(mock_to_thread):
"""When no Ollama models are configured, no Ollama pull events are yielded."""
from haiku.rag.config import AppConfig
config = AppConfig()
config.embeddings.model.provider = "openai"
config.qa.model.provider = "openai"
config.research.model.provider = "openai"
events = []
async for progress in download_models(config):
events.append(progress)
models = {e.model for e in events}
assert "qwen3-embedding:4b" not in models
assert "gpt-oss" not in models