code: def _test_hover_info(
      self, element, tooltips, line_policy="nearest", formatters=None
  ):
      if formatters is None:
          formatters = {}
      plot = bokeh_renderer.get_plot(element)
      plot.initialize_plot()
      fig = plot.state
      renderers = [
          r
          for r in plot.traverse(
              lambda x: x.handles.get("glyph_renderer")
          )
          if r is not None
      ]
      hover = fig.select(dict(type=HoverTool))
      self.assertTrue(len(hover))
      self.assertEqual(hover[0].tooltips, tooltips)
      self.assertEqual(hover[0].formatters, formatters)
      self.assertEqual(hover[0].line_policy, line_policy)
  
      if isinstance(element, Element):
          cds = fig.select_one(dict(type=ColumnDataSource))
          for label, lookup in hover[0].tooltips:
              if label in element.dimensions():
                  self.assertIn(lookup[2:-1], cds.data)
  
      # Ensure all the glyph renderers have a hover tool
      print(renderers, hover)
      for renderer in renderers:
          self.assertTrue(any(renderer in h.renderers for h in hover))
  
imports: import numpy
  import pyviz_comms
  from bokeh.models import ColumnDataSource, CustomJS, HoverTool, LinearColorMapper, LogColorMapper
  from param import concrete_descendents
  from holoviews import Curve
  from holoviews.core.element import Element
  from holoviews.core.options import Store
  from holoviews.element.comparison import ComparisonTestCase
  from holoviews.plotting.bokeh.callbacks import Callback
  from holoviews.plotting.bokeh.element import ElementPlot
  from ..None import option_intersections
label_desc: Use image node_id 4 for calling the TestBokehPlot obj's underlying member method code with example usage: obj._test_hover_info(element, tooltips, line_policy, formatters) without return types