code: def test__get_demos(mock_get_demos):
      """Test that the method get_demos is being called properly."""
  
      # run
      cli._get_demos(None)  # Args are not being used.
  
      # assert
      mock_get_demos.assert_called_once_with()
  
file_path: ATM/tests/test_cli.py
imports: from mock import Mock, patch
  from atm import cli
label_desc: Use image node_id 1 for calling a global function with example usage: test__get_demos(mock_get_demos) without return types