class_docstr: Test the Scene's handling of various dependencies.
class_docstr_tok: ["Test","the","Scene","'s","handling","of","various","dependencies","."]
docstr: Test the available datasets for one reader.
code: def test_available_datasets_one_reader(self):
      """Test the available datasets for one reader."""
      scene = Scene(filenames=["fake1_1ds_1.txt"], reader="fake1_1ds")
      id_list = scene.available_dataset_ids()
      assert len(id_list) == 1
      id_list = scene.available_dataset_ids(composites=True)
      # ds1, comp1, comp14, comp16, static_image, comp26
      assert len(id_list) == 6
  
imports: from unittest import mock
  import pytest
  import xarray
  from dask import array
  from satpy import Scene
  from satpy.tests.utils import make_cid, make_dataid, make_dsq, spy_decorator
label_desc: Use image node_id 7 for calling the TestSceneAllAvailableDatasets obj's underlying member method code with example usage: obj.test_available_datasets_one_reader() without return types