code: def test_processing_timer_handlers_profiler():
      true_processing_time = 0.1
      true_max_epochs = 2
      true_num_iters = 2
  
      def train_updater(engine, batch):
          time.sleep(true_processing_time)
  
      profiler = HandlersTimeProfiler()
      dummy_trainer = Engine(train_updater)
      profiler.attach(dummy_trainer)
      dummy_trainer.run(
          range(true_num_iters), max_epochs=true_max_epochs
      )
      results = profiler.get_results()
      processing_results = results[-2]
  
      assert processing_results[0] == "Processing"
      # event name
      assert processing_results[1] == "None"
      # total
      assert processing_results[2] == approx(
          true_max_epochs * true_num_iters * true_processing_time,
          abs=1e-1,
      )
      # min
      assert processing_results[3][0] == approx(
          true_processing_time, abs=1e-1
      )
      # max
      assert processing_results[4][0] == approx(
          true_processing_time, abs=1e-1
      )
      # mean
      assert processing_results[5] == approx(
          true_processing_time, abs=1e-1
      )
      # stddev
      assert processing_results[6] == approx(0.0, abs=1e-1)
  
imports: import sys
  import time
  from unittest.mock import patch
  import pytest
  from pytest import approx
  from ignite.engine import Engine, EventEnum, Events
  from ignite.handlers.time_profilers import BasicTimeProfiler, HandlersTimeProfiler
label_desc: Use image node_id 8 for calling a global function with example usage: test_processing_timer_handlers_profiler() without return types