[xcvrd] Fix issue: logical_port_name is not defined (#482)

* [xcvrd] Fix issue: logical_port_name is not defined

* Add UT

---------

Co-authored-by: Prince George <45705344+prgeor@users.noreply.github.com>

sonic-xcvrd/tests/test_xcvrd.py

@@ -854,6 +854,15 @@ def test_fetch_optics_si_setting_with_comma(self):
     def test_fetch_optics_si_setting_with_port(self):
        self._check_fetch_optics_si_setting(1)
 
+    @patch('xcvrd.xcvrd_utilities.optics_si_parser.g_optics_si_dict', port_optics_si_settings)
+    @patch('xcvrd.xcvrd_utilities.optics_si_parser.get_module_vendor_key', MagicMock(return_value=(None, None)))
+    @patch('xcvrd.xcvrd._wrapper_get_presence', MagicMock(return_value=True))
+    def test_fetch_optics_si_setting_negative(self):
+        port = 1
+        lane_speed = 100
+        mock_sfp = MagicMock()
+        assert not optics_si_parser.fetch_optics_si_setting(port, lane_speed, mock_sfp)
+
     @patch('xcvrd.xcvrd._wrapper_get_presence', MagicMock(return_value=True))
     @patch('xcvrd.xcvrd_utilities.optics_si_parser.get_module_vendor_key', MagicMock(return_value=('CREDO-CAC82X321M','CREDO')))
     def _check_fetch_optics_si_setting(self, index):

sonic-xcvrd/xcvrd/xcvrd_utilities/optics_si_parser.py

@@ -113,7 +113,7 @@ def fetch_optics_si_setting(physical_port, lane_speed, sfp):
         return optics_si
     vendor_key, vendor_name = get_module_vendor_key(physical_port, sfp)
     if vendor_key is None or vendor_name is None:
-        helper_logger.log_error("Error: No Vendor Key found for port '{}'".format(logical_port_name))
+        helper_logger.log_error("Error: No Vendor Key found for Module {}".format(physical_port))
         return optics_si
     optics_si = get_optics_si_settings_value(physical_port, lane_speed, vendor_key, vendor_name)
     return optics_si