Fix test coverage for `settings.app03`

tests/test_tutorial/test_settings/test_app03.py

@@ -2,6 +2,7 @@ import importlib
 from types import ModuleType
 
 import pytest
+from fastapi.testclient import TestClient
 from pytest import MonkeyPatch
 
 from ...utils import needs_py39, needs_pydanticv1, needs_pydanticv2
@@ -43,3 +44,16 @@ def test_settings_pv1(mod_path: str, monkeypatch: MonkeyPatch):
     assert settings.app_name == "Awesome API"
     assert settings.admin_email == "admin@example.com"
     assert settings.items_per_user == 50
+
+
+@needs_pydanticv2
+def test_endpoint(main_mod: ModuleType, monkeypatch: MonkeyPatch):
+    monkeypatch.setenv("ADMIN_EMAIL", "admin@example.com")
+    client = TestClient(main_mod.app)
+    response = client.get("/info")
+    assert response.status_code == 200
+    assert response.json() == {
+        "app_name": "Awesome API",
+        "admin_email": "admin@example.com",
+        "items_per_user": 50,
+    }