code: def test_emacs_reverse_search():
      history = _history()
  
      # ControlR  (reverse-search-history)
      result, cli = _feed_cli_with_input(
          "\x12input\n\n", history=history
      )
      assert result.text == "line3 third input"
  
      # Hitting ControlR twice.
      result, cli = _feed_cli_with_input(
          "\x12input\x12\n\n", history=history
      )
      assert result.text == "line2 second input"
  
imports: from __future__ import unicode_literals
  from prompt_toolkit.application import Application
  from prompt_toolkit.buffer import Buffer, AcceptAction
  from prompt_toolkit.clipboard import InMemoryClipboard, ClipboardData
  from prompt_toolkit.enums import DEFAULT_BUFFER, EditingMode
  from prompt_toolkit.eventloop.posix import PosixEventLoop
  from prompt_toolkit.history import InMemoryHistory
  from prompt_toolkit.input import PipeInput
  from prompt_toolkit.interface import CommandLineInterface
  from prompt_toolkit.key_binding.manager import KeyBindingManager
  from prompt_toolkit.output import DummyOutput
  from prompt_toolkit.terminal.vt100_input import ANSI_SEQUENCES
  from functools import partial
  import pytest
label_desc: Use image node_id 11 for calling a global function with example usage: test_emacs_reverse_search() without return types