移除示例项目初始化并修复前后端稳定性问题

backend/tests/test_app_startup.py

@@ -0,0 +1,78 @@
+from contextlib import asynccontextmanager
+from unittest.mock import AsyncMock
+
+import pytest
+from fastapi import FastAPI
+
+from app import main
+
+
+class _DummyTask:
+    def __init__(self):
+        self.awaited = False
+
+    def __await__(self):
+        async def _wait():
+            self.awaited = True
+
+        return _wait().__await__()
+
+
+class _DummySession:
+    async def __aenter__(self):
+        return self
+
+    async def __aexit__(self, exc_type, exc, tb):
+        return False
+
+
+class _DummyBegin:
+    async def __aenter__(self):
+        return self
+
+    async def __aexit__(self, exc_type, exc, tb):
+        return False
+
+    async def run_sync(self, fn):
+        return None
+
+
+class _DummyEngine:
+    def begin(self):
+        return _DummyBegin()
+
+
+@pytest.mark.asyncio
+async def test_development_startup_does_not_seed_demo_fees(monkeypatch):
+    ensure_admin_exists = AsyncMock()
+    seed_demo_fees = AsyncMock()
+    create_all = AsyncMock()
+    legacy_pk = AsyncMock()
+    scheduler_task = _DummyTask()
+
+    async def fake_scheduler(stop_event):
+        return None
+
+    def fake_create_task(coroutine):
+        coroutine.close()
+        return scheduler_task
+
+    @asynccontextmanager
+    async def fake_session_local():
+        yield _DummySession()
+
+    monkeypatch.setattr(main.settings, "ENV", "development")
+    monkeypatch.setattr(main, "ensure_admin_exists", ensure_admin_exists)
+    monkeypatch.setattr(main, "seed_demo_fees", seed_demo_fees, raising=False)
+    monkeypatch.setattr(main, "run_daily_lost_visit_job", fake_scheduler)
+    monkeypatch.setattr(main.asyncio, "create_task", fake_create_task)
+    monkeypatch.setattr(main, "engine", _DummyEngine())
+    monkeypatch.setattr(main, "SessionLocal", fake_session_local)
+    monkeypatch.setattr(main, "_ensure_legacy_primary_keys", legacy_pk)
+    monkeypatch.setattr(main.Base.metadata, "create_all", create_all)
+
+    async with main.lifespan(FastAPI()):
+        pass
+
+    ensure_admin_exists.assert_awaited_once()
+    seed_demo_fees.assert_not_awaited()