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https://github.com/bytedance/deer-flow.git
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6beea682d2
Tail-end of Phase 2: - Migrate ~70 remaining test sites off AppConfig.current(): drop dead monkey-patches (production no longer calls current), hoist the mocked config into a local variable and pass it explicitly. Verified with `grep -rn 'AppConfig\.current' backend/tests` → empty. - Delete the AppConfig.current() classmethod entirely. The transitional raise-only shim is no longer needed now that no test references it. - Update docs: plan marked shipped (P2-6..P2-10 in commit 84dccef2); backend/CLAUDE.md Config Lifecycle rewritten to describe the explicit-parameter design; gateway/deps.py docstrings no longer point at the removed current() surface. AppConfig is now a pure Pydantic value object. Every consumer holds its own captured instance — Gateway (app.state.config via Depends(get_config)), DeerFlowClient (self._app_config), agent runtime (DeerFlowContext.app_config), LangGraph Server bootstrap (AppConfig.from_file() inside make_lead_agent). 2337 non-e2e tests pass.
225 lines
8.8 KiB
Python
225 lines
8.8 KiB
Python
"""Unit tests for checkpointer config and singleton factory."""
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import sys
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from unittest.mock import AsyncMock, MagicMock, patch
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import pytest
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from deerflow.config.app_config import AppConfig
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from deerflow.config.checkpointer_config import CheckpointerConfig
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from deerflow.config.sandbox_config import SandboxConfig
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from deerflow.runtime.checkpointer import get_checkpointer, reset_checkpointer
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def _make_config(checkpointer: CheckpointerConfig | None = None) -> AppConfig:
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return AppConfig(sandbox=SandboxConfig(use="test"), checkpointer=checkpointer)
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@pytest.fixture(autouse=True)
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def reset_state():
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"""Reset singleton state before each test."""
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reset_checkpointer()
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yield
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reset_checkpointer()
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# ---------------------------------------------------------------------------
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# Config tests
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# ---------------------------------------------------------------------------
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class TestCheckpointerConfig:
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def test_memory_config(self):
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config = CheckpointerConfig(type="memory")
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assert config.type == "memory"
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assert config.connection_string is None
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def test_sqlite_config(self):
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config = CheckpointerConfig(type="sqlite", connection_string="/tmp/test.db")
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assert config.type == "sqlite"
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assert config.connection_string == "/tmp/test.db"
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def test_postgres_config(self):
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config = CheckpointerConfig(type="postgres", connection_string="postgresql://localhost/db")
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assert config.type == "postgres"
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assert config.connection_string == "postgresql://localhost/db"
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def test_default_connection_string_is_none(self):
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config = CheckpointerConfig(type="memory")
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assert config.connection_string is None
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def test_invalid_type_raises(self):
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with pytest.raises(Exception):
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CheckpointerConfig(type="unknown")
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# ---------------------------------------------------------------------------
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# Factory tests
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# ---------------------------------------------------------------------------
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class TestGetCheckpointer:
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def test_returns_in_memory_saver_when_not_configured(self):
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"""get_checkpointer should return InMemorySaver when not configured."""
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from langgraph.checkpoint.memory import InMemorySaver
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cfg = _make_config()
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cp = get_checkpointer(cfg)
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assert cp is not None
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assert isinstance(cp, InMemorySaver)
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def test_memory_returns_in_memory_saver(self):
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from langgraph.checkpoint.memory import InMemorySaver
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cfg = _make_config(CheckpointerConfig(type="memory"))
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cp = get_checkpointer(cfg)
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assert isinstance(cp, InMemorySaver)
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def test_memory_singleton(self):
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cfg = _make_config(CheckpointerConfig(type="memory"))
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cp1 = get_checkpointer(cfg)
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cp2 = get_checkpointer(cfg)
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assert cp1 is cp2
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def test_reset_clears_singleton(self):
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cfg = _make_config(CheckpointerConfig(type="memory"))
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cp1 = get_checkpointer(cfg)
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reset_checkpointer()
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cp2 = get_checkpointer(cfg)
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assert cp1 is not cp2
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def test_sqlite_raises_when_package_missing(self):
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cfg = _make_config(CheckpointerConfig(type="sqlite", connection_string="/tmp/test.db"))
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with patch.dict(sys.modules, {"langgraph.checkpoint.sqlite": None}):
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reset_checkpointer()
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with pytest.raises(ImportError, match="langgraph-checkpoint-sqlite"):
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get_checkpointer(cfg)
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def test_postgres_raises_when_package_missing(self):
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cfg = _make_config(CheckpointerConfig(type="postgres", connection_string="postgresql://localhost/db"))
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with patch.dict(sys.modules, {"langgraph.checkpoint.postgres": None}):
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reset_checkpointer()
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with pytest.raises(ImportError, match="langgraph-checkpoint-postgres"):
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get_checkpointer(cfg)
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def test_postgres_raises_when_connection_string_missing(self):
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cfg = _make_config(CheckpointerConfig(type="postgres"))
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mock_saver = MagicMock()
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mock_module = MagicMock()
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mock_module.PostgresSaver = mock_saver
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with patch.dict(sys.modules, {"langgraph.checkpoint.postgres": mock_module}):
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reset_checkpointer()
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with pytest.raises(ValueError, match="connection_string is required"):
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get_checkpointer(cfg)
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def test_sqlite_creates_saver(self):
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"""SQLite checkpointer is created when package is available."""
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cfg = _make_config(CheckpointerConfig(type="sqlite", connection_string="/tmp/test.db"))
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mock_saver_instance = MagicMock()
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mock_cm = MagicMock()
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mock_cm.__enter__ = MagicMock(return_value=mock_saver_instance)
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mock_cm.__exit__ = MagicMock(return_value=False)
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mock_saver_cls = MagicMock()
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mock_saver_cls.from_conn_string = MagicMock(return_value=mock_cm)
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mock_module = MagicMock()
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mock_module.SqliteSaver = mock_saver_cls
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with patch.dict(sys.modules, {"langgraph.checkpoint.sqlite": mock_module}):
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reset_checkpointer()
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cp = get_checkpointer(cfg)
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assert cp is mock_saver_instance
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mock_saver_cls.from_conn_string.assert_called_once()
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mock_saver_instance.setup.assert_called_once()
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def test_postgres_creates_saver(self):
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"""Postgres checkpointer is created when packages are available."""
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cfg = _make_config(CheckpointerConfig(type="postgres", connection_string="postgresql://localhost/db"))
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mock_saver_instance = MagicMock()
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mock_cm = MagicMock()
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mock_cm.__enter__ = MagicMock(return_value=mock_saver_instance)
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mock_cm.__exit__ = MagicMock(return_value=False)
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mock_saver_cls = MagicMock()
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mock_saver_cls.from_conn_string = MagicMock(return_value=mock_cm)
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mock_pg_module = MagicMock()
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mock_pg_module.PostgresSaver = mock_saver_cls
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with patch.dict(sys.modules, {"langgraph.checkpoint.postgres": mock_pg_module}):
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reset_checkpointer()
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cp = get_checkpointer(cfg)
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assert cp is mock_saver_instance
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mock_saver_cls.from_conn_string.assert_called_once_with("postgresql://localhost/db")
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mock_saver_instance.setup.assert_called_once()
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class TestAsyncCheckpointer:
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@pytest.mark.anyio
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async def test_sqlite_creates_parent_dir_via_to_thread(self):
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"""Async SQLite setup should move mkdir off the event loop."""
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from deerflow.runtime.checkpointer.async_provider import make_checkpointer
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mock_config = MagicMock()
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mock_config.checkpointer = CheckpointerConfig(type="sqlite", connection_string="relative/test.db")
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mock_saver = AsyncMock()
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mock_cm = AsyncMock()
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mock_cm.__aenter__.return_value = mock_saver
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mock_cm.__aexit__.return_value = False
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mock_saver_cls = MagicMock()
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mock_saver_cls.from_conn_string.return_value = mock_cm
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mock_module = MagicMock()
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mock_module.AsyncSqliteSaver = mock_saver_cls
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with (
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patch.dict(sys.modules, {"langgraph.checkpoint.sqlite.aio": mock_module}),
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patch("deerflow.runtime.checkpointer.async_provider.asyncio.to_thread", new_callable=AsyncMock) as mock_to_thread,
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patch(
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"deerflow.runtime.checkpointer.async_provider.resolve_sqlite_conn_str",
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return_value="/tmp/resolved/test.db",
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),
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):
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async with make_checkpointer(mock_config) as saver:
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assert saver is mock_saver
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mock_to_thread.assert_awaited_once()
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called_fn, called_path = mock_to_thread.await_args.args
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assert called_fn.__name__ == "ensure_sqlite_parent_dir"
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assert called_path == "/tmp/resolved/test.db"
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mock_saver_cls.from_conn_string.assert_called_once_with("/tmp/resolved/test.db")
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mock_saver.setup.assert_awaited_once()
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# ---------------------------------------------------------------------------
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# app_config.py integration
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# ---------------------------------------------------------------------------
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class TestAppConfigLoadsCheckpointer:
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def test_load_checkpointer_section(self):
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"""AppConfig with checkpointer section has the correct config."""
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cfg = _make_config(CheckpointerConfig(type="memory"))
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assert cfg.checkpointer is not None
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assert cfg.checkpointer.type == "memory"
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# ---------------------------------------------------------------------------
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# DeerFlowClient falls back to config checkpointer
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# ---------------------------------------------------------------------------
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class TestClientCheckpointerFallback:
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def test_client_uses_config_checkpointer_when_none_provided(self):
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"""DeerFlowClient._ensure_agent falls back to get_checkpointer(app_config) when checkpointer=None."""
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# This is a structural test — verifying the fallback path exists.
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cfg = _make_config(CheckpointerConfig(type="memory"))
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assert cfg.checkpointer is not None
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