🧪 Add test for not duplicating dependencies without scopes

tests/test_security_scopes.py

@@ -0,0 +1,47 @@
+from typing import Annotated, Dict
+
+import pytest
+from fastapi import Depends, FastAPI, Security
+from fastapi.testclient import TestClient
+
+
+@pytest.fixture(name="call_counter")
+def call_counter_fixture():
+    return {"count": 0}
+
+
+@pytest.fixture(name="app")
+def app_fixture(call_counter: Dict[str, int]):
+    def get_db():
+        call_counter["count"] += 1
+        return f"db_{call_counter['count']}"
+
+    def get_user(db: Annotated[str, Depends(get_db)]):
+        return "user"
+
+    app = FastAPI()
+
+    @app.get("/")
+    def endpoint(
+        db: Annotated[str, Depends(get_db)],
+        user: Annotated[str, Security(get_user, scopes=["read"])],
+    ):
+        return {"db": db}
+
+    return app
+
+
+@pytest.fixture(name="client")
+def client_fixture(app: FastAPI):
+    return TestClient(app)
+
+
+def test_security_scopes_dependency_called_once(
+    client: TestClient, call_counter: Dict[str, int]
+):
+    response = client.get("/")
+
+    assert response.status_code == 200
+    assert call_counter["count"] == 1, (
+        f"get_db called {call_counter['count']}x (expected: 1)"
+    )