code: def test_default_port_protocol_gateway():
      args = set_gateway_parser().parse_args([])
      assert len(args.port) == 1
      assert args.protocol == [ProtocolType.GRPC]
  
file_path: jina/tests/unit/parsers/peapods/runtimes/test_port_protocol_parser.py
imports: import pytest
  from jina.enums import ProtocolType
  from jina.helper import ArgNamespace
  from jina.parsers import set_gateway_parser, set_pod_parser
label_desc: Use image node_id 7 for calling a global function with example usage: test_default_port_protocol_gateway() without return types