code: def test_successful_execution(self):
      result = asyncio.run(timeout_dummy_coroutine_fn(0.1))
      self.assertEqual(result, "Success")
  
imports: import asyncio
  import os
  import shutil
  import tempfile
  import unittest
  import time
  from unittest.mock import patch
  from fiftyone.operators.decorators import coroutine_timeout, dir_state
label_desc: Use image node_id 1 for calling the TestCoroutineTimeoutDecorator obj's underlying member method code with example usage: obj.test_successful_execution() without return types