add exchange table

backend/tests/test_app.py

@@ -0,0 +1,18 @@
+from collections.abc import Generator
+
+import pytest
+from fastapi.testclient import TestClient
+
+from app import API_BASE, app
+
+
+@pytest.fixture
+def client() -> Generator[TestClient, None, None]:
+    with TestClient(app) as client:
+        yield client
+
+
+def test_get_status(client: TestClient) -> None:
+    response = client.get(f"{API_BASE}/status")
+    assert response.status_code == 200
+    assert response.json() == {"status": "ok"}