class_docstr: Tests for the radiances.
docstr: Test getting the radiances.
docstr_tok: ["Test","getting","the","radiances","."]
code: def test_get_dataset_radiance(self):
      """Test getting the radiances."""
      for ch in self.channels:
          if not is_vis_channel(ch):
              radiance = self.reader.get_dataset(
                  key=make_dataid(name=ch, calibration="radiance"),
                  info={},
              )
              # ... this only compares the valid (unmasked) elements
              assert np.all(
                  self.radiance == radiance.to_masked_array()
              ), f"get_dataset() returns invalid radiance for channel {ch}"
  
file_path: satpy/satpy/tests/reader_tests/test_goes_imager_nc_eum.py
imports: import unittest
  from unittest import mock
  import numpy
  import xarray
  from satpy.readers.goes_imager_nc import is_vis_channel
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 2 for calling the GOESNCEUMFileHandlerRadianceTest obj's underlying member method code with example usage: obj.test_get_dataset_radiance() without return types