class_docstr: Test identification of channel type.
class_docstr_tok: ["Test","identification","of","channel","type","."]
docstr: Test vis channel identification.
code: def test_is_vis_channel(self, channel_name, expected):
      """Test vis channel identification."""
      assert is_vis_channel(channel_name) == expected
  
imports: import datetime
  import unittest
  from unittest import mock
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
  from satpy.readers.goes_imager_nc import is_vis_channel
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 1 for calling the TestChannelIdentification obj's underlying member method code with example usage: obj.test_is_vis_channel(channel_name, expected) without return types