fix: resolve mypy lint errors for AuthManagerFactory and test type annotations

Author: Gayathri Srividya Rajavarapu

pyiceberg/catalog/rest/__init__.py

@@ -486,7 +486,7 @@ def _create_session(self) -> Session:
                 raise ValueError(
                     f"auth.impl can only be specified when using custom auth.type{f' (from {source_env_var})' if source_env_var else ''}"
                 )
-            self._auth_manager = AuthManagerFactory.create(auth_impl or auth_type, auth_type_config)
+            self._auth_manager = AuthManagerFactory.create(auth_impl or auth_type, auth_type_config or {})
             session.auth = AuthManagerAdapter(self._auth_manager)
         else:
             self._auth_manager = self._create_legacy_oauth2_auth_manager(session)

tests/catalog/test_rest.py

@@ -3212,7 +3212,13 @@ def test_load_table_without_storage_credentials(
         ),
     ],
 )
-def test_rest_catalog_with_auth_json_string(requests_mock, rest_mock, auth_dict, expected_header, mocker_type):
+def test_rest_catalog_with_auth_json_string(
+    requests_mock: Any,
+    rest_mock: Any,
+    auth_dict: dict[str, Any],
+    expected_header: Any,
+    mocker_type: str,
+) -> None:
     """Test various auth configs as JSON string (from env var) are decoded and handled correctly."""
     if mocker_type == "rest_mock":
         rest_mock.get(
@@ -3344,8 +3350,12 @@ def test_rest_catalog_with_basic_auth_flat_properties(rest_mock: Mocker) -> None
     ],
 )
 def test_rest_catalog_with_flat_properties_edge_cases(
-    requests_mock, rest_mock, catalog_properties, token_response, expected_scopes
-):
+    requests_mock: Any,
+    rest_mock: Any,
+    catalog_properties: dict[str, Any],
+    token_response: dict[str, Any] | None,
+    expected_scopes: str | list[str],
+) -> None:
     """Test flat property env-var style for OAuth2, Google, Entra with list[str] scopes and edge cases."""
     if catalog_properties["auth.type"] == "oauth2":
         requests_mock.post(