class_docstr: Test the Scene object's `.load` method for composites.
class_docstr_tok: ["Test","the","Scene","object","'s","`",".load","`","method","for","composites","."]
docstr: Test that certain composites can be loaded individually.
code: def test_single_composite_loading(self, comp_name, exp_id_or_name):
      """Test that certain composites can be loaded individually."""
      scene = Scene(filenames=["fake1_1.txt"], reader="fake1")
      scene.load([comp_name])
      loaded_ids = list(scene._datasets.keys())
      assert len(loaded_ids) == 1
      if isinstance(exp_id_or_name, str):
          assert loaded_ids[0]["name"] == exp_id_or_name
      else:
          assert loaded_ids[0] == exp_id_or_name
  
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 1 for calling the TestLoadingComposites obj's underlying member method code with example usage: obj.test_single_composite_loading(comp_name, exp_id_or_name) without return types