test: add start_server-level no_auth warning regression test (review: suzunn)

Signed-off-by: FugoP <264910004+AgentGymLeader@users.noreply.github.com>

Author: AgentGymLeader

sdk/python/tests/unit/test_registry_server.py

@@ -1,9 +1,10 @@
 import logging
+from types import SimpleNamespace
 
 import pytest
 
 from feast.permissions.server.utils import AuthManagerType
-from feast.registry_server import _warn_if_auth_disabled
+from feast.registry_server import _warn_if_auth_disabled, start_server
 
 
 def test_warn_if_auth_disabled_emits_warning_for_none(caplog):
@@ -18,3 +19,35 @@ def test_warn_if_auth_disabled_no_warning_for_oidc(caplog):
     with caplog.at_level(logging.WARNING, logger="feast.registry_server"):
         _warn_if_auth_disabled(AuthManagerType.OIDC)
     assert len(caplog.records) == 0
+
+
+def test_start_server_warns_when_auth_disabled(caplog, monkeypatch):
+    class Sentinel(Exception):
+        pass
+
+    store = SimpleNamespace(
+        config=SimpleNamespace(
+            auth_config=SimpleNamespace(type=AuthManagerType.NONE.value)
+        )
+    )
+
+    def fail_after_warning(auth_type, fs):
+        assert auth_type == AuthManagerType.NONE
+        assert fs is store
+        assert any(
+            record.levelno == logging.WARNING and "no_auth" in record.message
+            for record in caplog.records
+        )
+        raise Sentinel
+
+    monkeypatch.setattr(
+        "feast.registry_server.init_security_manager", fail_after_warning
+    )
+
+    with caplog.at_level(logging.WARNING, logger="feast.registry_server"):
+        with pytest.raises(Sentinel):
+            start_server(store, port=0)
+
+    assert len(caplog.records) == 1
+    assert caplog.records[0].levelno == logging.WARNING
+    assert "no_auth" in caplog.records[0].message