code: def test_points_cbar_extend_min(self):
      img = Points(([0, 1], [0, 3])).redim(y=dict(range=(1, None)))
      plot = mpl_renderer.get_plot(
          img.opts(colorbar=True, color_index=1)
      )
      self.assertEqual(plot.handles["cbar"].extend, "min")
  
imports: import matplotlib.pyplot
  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 Points
  from ..utils import ParamLogStream
  from .test_plot import TestMPLPlot, mpl_renderer
label_desc: Use image node_id 3 for calling the TestPointPlot obj's underlying member method code with example usage: obj.test_points_cbar_extend_min() without return types