diff --git a/tests/conftest.py b/tests/conftest.py
index e38e5e5..4016ff0 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,29 +1 @@
-from collections.abc import AsyncIterator
-
-import pytest
-from fastapi.testclient import TestClient
-
-from app.config import Settings
-from app.main import create_app
-from app.models import CurrentStatus, MonitorState, utc_now
-
-
-class FakeChecker:
-    async def check(self, monitor_id: str, target_url: str) -> CurrentStatus:
-        return CurrentStatus(
-            state=MonitorState.UP,
-            checked_at=utc_now(),
-            latency_ms=3.5,
-            http_status=204,
-        )
-
-
-@pytest.fixture
-def anyio_backend() -> str:
-    return "asyncio"
-
-
-@pytest.fixture
-def client() -> AsyncIterator[TestClient]:
-    with TestClient(create_app(Settings(), checker=FakeChecker())) as test_client:  # type: ignore[arg-type]
-        yield test_client
+# Env var setup that must run before app.config is imported.