class_docstr: Test the MITIFF Writer class.
docstr: Test writer operation as palette.
docstr_tok: ["Test","writer","operation","as","palette","."]
code: def test_save_dataset_palette(self):
      """Test writer operation as palette."""
      from satpy.writers.mitiff import MITIFFWriter
  
      expected = [np.full((100, 200), 0)]
  
      exp_c = [
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      color_map = (0, 1, 2, 3, 4, 5)
      pal_desc = ["test", "test2"]
      unit = "Test"
  
      dataset = self._get_test_one_dataset()
      palette = {
          "palette": True,
          "palette_color_map": color_map,
          "palette_description": pal_desc,
          "palette_unit": unit,
          "palette_channel_name": dataset.attrs["name"],
      }
  
      w = MITIFFWriter(base_dir=self.base_dir)
      w.save_dataset(dataset, **palette)
      filename = "{:s}_{:%Y%m%d_%H%M%S}.mitiff".format(
          dataset.attrs["name"], dataset.attrs["start_time"]
      )
      pillow_tif = Image.open(os.path.join(self.base_dir, filename))
      # Need to check PHOTOMETRIC is 3, ie palette
      assert pillow_tif.tag_v2.get(262) == 3
      # Check the colormap of the palette image
      palette = pillow_tif.palette
      colormap = list((palette.getdata())[1])
      assert colormap == exp_c
      imgdesc = self._imagedescription_from_mitiff(
          os.path.join(self.base_dir, filename)
      )
      found_color_info = False
      unit_name_found = False
      name_length_found = False
      name_length = 0
      names = []
      unit_name = None
      for key in imgdesc:
          if name_length_found and name_length > len(names):
              names.append(key)
              continue
          elif unit_name_found:
              name_length = int(key)
              name_length_found = True
              unit_name_found = False
          elif found_color_info:
              unit_name = key
              unit_name_found = True
              found_color_info = False
          elif "COLOR INFO:" in key:
              found_color_info = True
      # Check the name of the palette description
      assert name_length == 2
      # Check the name and unit name of the palette
      assert unit_name == " Test"
      # Check the palette description of the palette
      assert names == [" test", " test2"]
      self._read_back_mitiff_and_check(
          os.path.join(self.base_dir, filename), expected
      )
  
imports: import logging
  import os
  import unittest
  import numpy
  from PIL import Image
label_desc: Use image node_id 26 for calling the TestMITIFFWriter obj's underlying member method code with example usage: obj.test_save_dataset_palette() without return types