code: def test_auto_play(self):
      html = plotly.offline.plot(fig_frames, output_type="div")
      self.assertIn(add_frames, html)
      self.assertIn(do_auto_play, html)
  
imports: import json
  import os
  from unittest import TestCase
  import pytest
  import plotly
  import plotly.io
  from plotly.io._utils import plotly_cdn_url
label_desc: Use image node_id 25 for calling the PlotlyOfflineTestCase obj's underlying member method code with example usage: obj.test_auto_play() without return types