fix(testing): configure shared plugin test runtime (#6438)

tests/fixtures/architecture/dependency-baseline.json

@@ -13,8 +13,8 @@
     "runtime_to_db": [],
     "workflow_to_db": []
   },
-  "edge_count": 6595,
-  "edge_sha256": "b0709f6e54bf046386d5df81c54a3e65889f18473b8cc91bbe7c97010bda02dc",
+  "edge_count": 6599,
+  "edge_sha256": "33b44ea7d1f05a4c76fd22c4c1b798689ac8e580099c50141fbd91345a625714",
   "edges": [
     "app -> app.runtime",
     "app -> app.runtime.compat",
@@ -6425,12 +6425,16 @@
     "app.startup.lifecycle -> app.startup.lifecycle.components",
     "app.testing -> app.testing.stub",
     "app.testing.bootstrap -> app.application",
+    "app.testing.bootstrap -> app.application.service",
     "app.testing.bootstrap -> app.application.site",
     "app.testing.bootstrap -> app.db",
+    "app.testing.bootstrap -> app.db.adapters",
+    "app.testing.bootstrap -> app.db.adapters.transaction",
     "app.testing.bootstrap -> app.db.oper",
     "app.testing.bootstrap -> app.db.oper.systemconfig",
     "app.testing.bootstrap -> app.db.oper.userconfig",
     "app.testing.bootstrap -> app.db.session",
+    "app.testing.bootstrap -> app.db.uow",
     "app.testing.bootstrap -> app.startup",
     "app.testing.bootstrap -> app.startup.initializers",
     "app.testing.bootstrap -> app.startup.initializers.cache",

tests/test_testing_bootstrap_transactions.py

@@ -0,0 +1,45 @@
+"""共享测试引导的数据库事务能力回归测试。"""
+
+import pytest
+from sqlalchemy import text
+
+from app.application import service
+from app.db import uow
+from app.schemas.types import SystemConfigKey
+from app.testing.bootstrap import prepare_backend
+
+
+def test_prepare_backend_configures_sync_transaction_runner(monkeypatch):
+    """插件仓只调用共享引导时，无 Session Oper 仍应获得隔离事务执行器。"""
+    monkeypatch.setattr(uow, "_sync_transaction_runner", None)
+
+    prepare_backend()
+
+    result = uow.run_sync_transaction(
+        lambda session: session.execute(text("SELECT 1")).scalar_one()
+    )
+    assert result == 1
+
+
+@pytest.mark.asyncio
+async def test_prepare_backend_configures_async_transaction_runner(monkeypatch):
+    """共享引导同时提供异步短事务，保持与生产组合根的装配契约一致。"""
+    monkeypatch.setattr(uow, "_async_transaction_runner", None)
+
+    prepare_backend()
+
+    async def select_one(session):
+        """在共享引导创建的隔离异步会话中执行最小查询。"""
+        return (await session.execute(text("SELECT 1"))).scalar_one()
+
+    assert await uow.run_async_transaction(select_one) == 1
+
+
+def test_prepare_backend_configures_empty_service_directory(monkeypatch):
+    """未启动真实模块时，插件通知查询应得到确定性的空服务配置。"""
+    monkeypatch.setattr(service, "_config_loader", service._unconfigured_configs)
+    monkeypatch.setattr(service, "_module_loader", service._unconfigured_modules)
+
+    prepare_backend()
+
+    assert service.get_service_configs(SystemConfigKey.Notifications, object) == []