code: def test_feed_simple(processor, handlers):
      processor.feed(KeyPress(Keys.ControlX, "\x18"))
      processor.feed(KeyPress(Keys.ControlC, "\x03"))
      processor.process_keys()
  
      assert handlers.called == ["controlx_controlc"]
  
file_path: catboost/contrib/python/prompt-toolkit/py2/tests/test_key_binding.py
imports: from __future__ import unicode_literals
  from prompt_toolkit.key_binding.input_processor import InputProcessor, KeyPress
  from prompt_toolkit.key_binding.registry import Registry
  from prompt_toolkit.keys import Keys
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: test_feed_simple(processor, handlers) without return types