code: def test_image_rtol_failure(self):
      vals = np.random.rand(20, 20)
      xs = np.linspace(0, 10, 20)
      ys = np.linspace(0, 10, 20)
      ys[-1] += 0.1
      Image({"vals": vals, "xs": xs, "ys": ys}, ["xs", "ys"], "vals")
      substr = (
          "set a higher tolerance on hv.config.image_rtol or "
          "the rtol parameter in the Image constructor."
      )
      self.log_handler.assertEndsWith("WARNING", substr)
  
file_path: holoviews/holoviews/tests/element/test_image.py
imports: import numpy
  import holoviews
  from holoviews.element import Curve, Image
  from ..utils import LoggingComparisonTestCase
label_desc: Use image node_id 7 for calling the TestImage obj's underlying member method code with example usage: obj.test_image_rtol_failure() without return types