class_docstr: Test the MWSL1BFile reader.
docstr: Test standardize dims.
docstr_tok: ["Test","standardize","dims","."]
code: def test_standardize_dims(self, reader, dims):
      """Test standardize dims."""
      variable = xr.DataArray(
          np.arange(6).reshape(2, 3),
          dims=dims,
      )
      standardized = reader._standardize_dims(variable)
      assert standardized.dims == ("y", "x")
  
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 16 for calling the TestMwsL1bNCFileHandler obj's underlying member method code with example usage: obj.test_standardize_dims(reader, dims) without return types