class_docstr: Test the AHI enhancement functions.
class_docstr_tok: ["Test","the","AHI","enhancement","functions","."]
docstr: Create test data.
code: def setup_method(self):
      """Create test data."""
      data = da.arange(-100, 1000, 110).reshape(2, 5)
      rgb_data = np.stack([data, data, data])
      self.rgb = xr.DataArray(
          rgb_data,
          dims=("bands", "y", "x"),
          coords={"bands": ["R", "G", "B"]},
          attrs={"platform_name": "Himawari-8"},
      )
  
imports: import contextlib
  import os
  from tempfile import NamedTemporaryFile
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from satpy.enhancements import create_colormap, on_dask_array, on_separate_bands, using_map_blocks
label_desc: Use image node_id 1 for calling the TestTCREnhancement obj's underlying member method code with example usage: obj.setup_method() without return types