code: def test_insat3d_returns_lonlat(insat_filename, resolution):
      """Test that lons and lats are loaded."""
      res = open_dataset(insat_filename, resolution=resolution)
      expected = values_by_resolution[resolution].squeeze() / 100.0
      assert isinstance(res["Latitude"].data, da.Array)
      np.testing.assert_allclose(res["Latitude"], expected)
      assert isinstance(res["Longitude"].data, da.Array)
      np.testing.assert_allclose(res["Longitude"], expected)
  
imports: import os
  from datetime import datetime
  import dask.array
  import h5netcdf
  import numpy
  import pytest
  from satpy import Scene
  from satpy.readers.insat3d_img_l1b_h5 import CHANNELS_BY_RESOLUTION, LUT_SUFFIXES, Insat3DIMGL1BH5FileHandler, get_lonlat_suffix, open_dataset, open_datatree
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 9 for calling a global function with example usage: test_insat3d_returns_lonlat(insat_filename, resolution) without return types