docstr: Test the get_timer_summary function
docstr_tok: ["Test","the","get_timer_summary","function"]
code: def test_get_timer_summary(self) -> None:
      """Test the get_timer_summary function"""
  
      timer = Timer()
      summary = get_timer_summary(timer)
      self.assertEqual(summary, f"Timer Report{os.linesep}")
  
      with timer.time("action_1"):
          time.sleep(0.5)
      summary = get_timer_summary(timer)
      self.assertTrue("action_1" in summary)
  
imports: import os
  import time
  import unittest
  from datetime import timedelta
  from random import random
  from unittest import mock
  from unittest.mock import Mock, patch
  import torch
  import torch.distributed
  from pyre_extensions import none_throws
  from torchtnt.utils.test_utils import skip_if_not_distributed, skip_if_not_gpu, spawn_multi_process
  from torchtnt.utils.timer import BoundedTimer, FullSyncPeriodicTimer, get_durations_histogram, get_recorded_durations_table, get_synced_durations_histogram, get_timer_summary, log_elapsed_time, logger, Timer
label_desc: Use image node_id 6 for calling the TimerTest obj's underlying member method code with example usage: obj.test_get_timer_summary() without return types