Catch generic error while verifying redfish availablity.

src/hw_tools.py

@@ -365,6 +365,9 @@ def redfish_available() -> bool:
     except (SessionCreationError, InvalidCredentialsError):
         # redfish available, wrong credentials or not able to create a session
         result = True
+    except Exception:  # pylint: disable=W0718
+        # mark redfish unavailable for any generic exception
+        result = False
     else:  # login succeeded with empty credentials
         result = True
         redfish_obj.logout()

tests/unit/test_hw_tools.py

@@ -716,6 +716,20 @@ def test_redfish_not_available(self, mock_bmc_address, mock_redfish_client):
         mock_redfish_client.assert_called_once()
         mock_redfish_obj.login.assert_called_once()
 
+    @mock.patch("hw_tools.redfish_client")
+    @mock.patch("hw_tools.get_bmc_address", return_value="1.2.3.4")
+    def test_redfish_not_available_generic(self, mock_bmc_address, mock_redfish_client):
+        mock_redfish_obj = mock.Mock()
+        mock_redfish_client.return_value = mock_redfish_obj
+        mock_redfish_obj.login.side_effect = Exception()
+
+        result = redfish_available()
+
+        self.assertEqual(result, False)
+        mock_bmc_address.assert_called_once()
+        mock_redfish_client.assert_called_once()
+        mock_redfish_obj.login.assert_called_once()
+
     @mock.patch("hw_tools.redfish_client")
     @mock.patch("hw_tools.get_bmc_address", return_value="1.2.3.4")
     def test_redfish_available(self, mock_bmc_address, mock_redfish_client):