class_docstr: Test the MWSL1BFile reader.
docstr: Test get auxillary dataset not supported.
docstr_tok: ["Test","get","auxillary","dataset","not","supported","."]
code: def test_get_dataset_aux_data_not_supported(self, reader):
      """Test get auxillary dataset not supported."""
      dataset_id = {"name": "scantime_utc"}
      dataset_info = {"file_key": "non/existing"}
  
      with pytest.raises(NotImplementedError) as exec_info:
          _ = reader.get_dataset(dataset_id, dataset_info)
  
      assert (
          str(exec_info.value)
          == "Dataset 'scantime_utc' not supported!"
      )
  
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 14 for calling the TestMwsL1bNCFileHandler obj's underlying member method code with example usage: obj.test_get_dataset_aux_data_not_supported(reader) without return types