class_docstr: Test case for the downloading and preparing LUTs.
docstr: Check that the function to download LUTs operates successfully.
docstr_tok: ["Check","that","the","function","to","download","LUTs","operates","successfully","."]
code: def test_get_luts(self):
      """Check that the function to download LUTs operates successfully."""
      tempdir = tempfile.gettempdir()
      self.fh._get_luts()
      assert not os.path.exists(
          os.path.join(tempdir, "count2tbb_v102/")
      )
      for lut_name in AHI_LUT_NAMES:
          assert os.path.isfile(os.path.join(self.fh.lut_dir, lut_name))
  
imports: import os
  import shutil
  import tempfile
  import unittest
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  from pyresample.geometry import AreaDefinition
  from satpy.readers.ahi_l1b_gridded_bin import AHI_LUT_NAMES, AHIGriddedFileHandler
label_desc: Use image node_id 4 for calling the TestAHIGriddedLUTs obj's underlying member method code with example usage: obj.test_get_luts() without return types