class_docstr: Test the MWSL1BFile reader.
docstr: Test getting the longitude of sub-satellite point at end of the product.
docstr_tok: ["Test","getting","the","longitude","of","sub-satellite","point","at","end","of","the","product","."]
code: def test_sub_satellite_longitude_end(self, reader):
      """Test getting the longitude of sub-satellite point at end of the product."""
      np.testing.assert_allclose(
          reader.sub_satellite_longitude_end, 2.47
      )
  
imports: import logging
  from datetime import datetime
  from unittest.mock import patch
  import numpy
  import pytest
  import xarray
  from netCDF4 import Dataset
  from satpy.readers.mws_l1b import MWSL1BFile, get_channel_index_from_name
label_desc: Use image node_id 7 for calling the TestMwsL1bNCFileHandler obj's underlying member method code with example usage: obj.test_sub_satellite_longitude_end(reader) without return types