class_docstr: Test the get_service_mode function.
docstr: Test fetching of SEVIRI service mode information for FES.
docstr_tok: ["Test","fetching","of","SEVIRI","service","mode","information","for","FES","."]
code: def test_get_seviri_service_mode_fes(self):
      """Test fetching of SEVIRI service mode information for FES."""
      ssp_lon = 0.0
      name = "fes"
      desc = "Full Earth Scanning service"
      res = get_service_mode("seviri", ssp_lon)
      assert res["service_name"] == name
      assert res["service_desc"] == desc
  
imports: import unittest
  from datetime import datetime
  import numpy
  from satpy.readers.eum_base import get_service_mode, recarray2dict, time_cds, time_cds_expanded, time_cds_short, timecds2datetime
  from satpy.readers.seviri_base import mpef_product_header
label_desc: Use image node_id 1 for calling the TestGetServiceMode obj's underlying member method code with example usage: obj.test_get_seviri_service_mode_fes() without return types