feat(tplus): 新增 T+ 只读同步服务与同步管理

backend/tests/conftest.py

@@ -4,6 +4,36 @@ import pytest
 from fastapi.testclient import TestClient
 
 
+@pytest.fixture
+def tplus_session(monkeypatch):
+    """T+ 管理逻辑的真实内存事务；MySQL 并发锁另做集成验证。"""
+    from sqlalchemy import DefaultClause, Integer, MetaData, create_engine, text
+    from sqlalchemy.orm import Session
+
+    from app.core.config import Settings
+    from app.models import TPlusSyncBatch, TPlusSyncError, TPlusSyncRecord
+
+    engine = create_engine("sqlite:///:memory:")
+    metadata = MetaData()
+    for model in (TPlusSyncBatch, TPlusSyncError, TPlusSyncRecord):
+        table = model.__table__.to_metadata(metadata)
+        table.c.id.type = Integer()
+        table.c.update_time.server_default = DefaultClause(text("CURRENT_TIMESTAMP"))
+    metadata.create_all(engine)
+    settings = Settings(
+        _env_file=None,
+        app_secret_key="x" * 32,
+        t_plus_enabled=True,
+        t_plus_database="unit_tplus",
+        t_plus_user="reader",
+        t_plus_odbc_driver="unit",
+    )
+    monkeypatch.setattr("app.services.tplus.task_service.get_settings", lambda: settings)
+    with Session(engine, expire_on_commit=False) as session:
+        yield session
+    engine.dispose()
+
+
 @pytest.fixture(scope="session")
 def client() -> TestClient:
     """构造应用测试客户端（会话级复用，避免重复构建应用）。