class_docstr: Tests for the radiances.
docstr: Test sector identification.
docstr_tok: ["Test","sector","identification","."]
code: def test_get_sector(self):
      """Test sector identification."""
      from satpy.readers.goes_imager_nc import (
          FULL_DISC,
          NORTH_HEMIS_EAST,
          NORTH_HEMIS_WEST,
          SOUTH_HEMIS_EAST,
          SOUTH_HEMIS_WEST,
          UNKNOWN_SECTOR,
      )
  
      shapes = {
          (2700, 5200): FULL_DISC,
          (1850, 3450): NORTH_HEMIS_EAST,
          (600, 3500): SOUTH_HEMIS_EAST,
          (1310, 3300): NORTH_HEMIS_WEST,
          (1099, 2800): SOUTH_HEMIS_WEST,
          (123, 456): UNKNOWN_SECTOR,
      }
      for (nlines, ncols), sector_ref in shapes.items():
          for channel in ("00_7", "10_7"):
              sector = self.reader._get_sector(
                  channel=channel, nlines=nlines, ncols=ncols
              )
              assert (
                  sector == sector_ref
              ), "Incorrect sector identification"
  
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 4 for calling the GOESNCEUMFileHandlerRadianceTest obj's underlying member method code with example usage: obj.test_get_sector() without return types