refactor(database): isolate configuration transactions

tests/test_configuration_initializer.py

@@ -0,0 +1,104 @@
+"""配置快照启动顺序测试。"""
+
+from unittest.mock import AsyncMock
+
+import pytest
+
+from app.startup import modules_initializer
+from app.startup.lifecycle import initialize_modules_component
+
+
+class _InlineWorker:
+    """按提交顺序执行配置加载操作。"""
+
+    async def run(self, operation):
+        """执行并返回操作结果。"""
+        return operation()
+
+
+@pytest.mark.asyncio
+async def test_configuration_services_publish_after_both_snapshots_load(
+    monkeypatch,
+) -> None:
+    """两个完整快照加载成功前不发布任一配置服务。"""
+    events = []
+
+    class _SystemConfig:
+        def load_snapshot(self):
+            events.append("load-system")
+
+    class _UserConfig:
+        def load_snapshot(self):
+            events.append("load-user")
+
+    monkeypatch.setattr(modules_initializer, "SystemConfigOper", _SystemConfig)
+    monkeypatch.setattr(modules_initializer, "UserConfigOper", _UserConfig)
+    monkeypatch.setattr(
+        modules_initializer,
+        "configure_system_config",
+        lambda _service: events.append("publish-system"),
+    )
+    monkeypatch.setattr(
+        modules_initializer,
+        "configure_user_configuration",
+        lambda _service: events.append("publish-user"),
+    )
+
+    await modules_initializer._initialize_configuration_services(_InlineWorker())
+
+    assert events == [
+        "load-system",
+        "load-user",
+        "publish-system",
+        "publish-user",
+    ]
+
+
+@pytest.mark.asyncio
+async def test_configuration_load_failure_does_not_publish_partial_service(
+    monkeypatch,
+) -> None:
+    """任一快照加载失败时不发布半套配置服务。"""
+    published = []
+
+    class _SystemConfig:
+        def load_snapshot(self):
+            return None
+
+    class _UserConfig:
+        def load_snapshot(self):
+            raise RuntimeError("load failed")
+
+    monkeypatch.setattr(modules_initializer, "SystemConfigOper", _SystemConfig)
+    monkeypatch.setattr(modules_initializer, "UserConfigOper", _UserConfig)
+    monkeypatch.setattr(
+        modules_initializer,
+        "configure_system_config",
+        lambda service: published.append(service),
+    )
+    monkeypatch.setattr(
+        modules_initializer,
+        "configure_user_configuration",
+        lambda service: published.append(service),
+    )
+
+    with pytest.raises(RuntimeError, match="load failed"):
+        await modules_initializer._initialize_configuration_services(_InlineWorker())
+
+    assert published == []
+
+
+@pytest.mark.asyncio
+async def test_modules_startup_failure_stops_database_worker(monkeypatch) -> None:
+    """模块启动失败时立即关闭已创建的数据库 worker。"""
+    monkeypatch.setattr(
+        "app.startup.lifecycle.init_modules",
+        AsyncMock(side_effect=RuntimeError("startup failed")),
+    )
+    stop_worker = AsyncMock()
+    monkeypatch.setattr(modules_initializer, "stop_database_worker", stop_worker)
+
+    with pytest.raises(RuntimeError, match="startup failed"):
+        await initialize_modules_component(object())
+
+    stop_worker.assert_awaited_once_with()