code: def test_no_values(self, xp, scp, dtype):
      image = xp.array([], dtype=dtype)
      labels = xp.array([])
      index = xp.array([])
      op = getattr(scp.ndimage, self.op)
      with warnings.catch_warnings():
          warnings.simplefilter("ignore", _util.PerformanceWarning)
          result = op(image, labels, index)
      return result
  
imports: import sys
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy.cuda import runtime
  from cupy import testing
  from cupy import _util
  from cupy._core import _accelerator
  import cupyx.scipy.ndimage
label_desc: Use image node_id 15 for calling the TestStats obj's underlying member method code with example usage: obj.test_no_values(xp, scp, dtype) and returns: result