class_docstr: Test the AHI gridded reader definition.
docstr: Ensure an error is raised for an usupported area.
docstr_tok: ["Ensure","an","error","is","raised","for","an","usupported","area","."]
code: def test_bad_area(self):
      """Ensure an error is raised for an usupported area."""
      tmp_fh = self.make_fh("ext.01")
      tmp_fh.areaname = "scanning"
      with pytest.raises(NotImplementedError):
          tmp_fh.get_area_def(None)
      with pytest.raises(NotImplementedError):
          self.make_fh("ext.01", area="scanning")
  
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 7 for calling the TestAHIGriddedArea obj's underlying member method code with example usage: obj.test_bad_area() without return types