code: def test_spikes_padding_datetime_nonsquare(self):
      spikes = Spikes(
          [np.datetime64("2016-04-0%d" % i) for i in range(1, 4)]
      ).opts(padding=0.1, aspect=2)
      plot = mpl_renderer.get_plot(spikes)
      x_range = plot.handles["axis"].get_xlim()
      self.assertEqual(x_range[0], 16891.9)
      self.assertEqual(x_range[1], 16894.1)
  
imports: import numpy
  import pytest
  from holoviews.core.options import AbbreviatedException
  from holoviews.core.overlay import NdOverlay
  from holoviews.core.spaces import HoloMap
  from holoviews.element import Spikes
  from ..utils import ParamLogStream
  from .test_plot import TestMPLPlot, mpl_renderer
label_desc: Use image node_id 10 for calling the TestSpikesPlot obj's underlying member method code with example usage: obj.test_spikes_padding_datetime_nonsquare() without return types