code: def test_single_dim(self, xp, scp, dtype):
      image = self._make_image((100,), xp, dtype)
      labels = testing.shaped_random(
          (100,), xp, dtype=xp.int32, scale=4
      )
      index = xp.array([1, 2, 3])
      op = getattr(scp.ndimage, self.op)
      with warnings.catch_warnings():
          warnings.simplefilter("ignore", _util.PerformanceWarning)
          result = op(image, labels, index)
      if self.op == "center_of_mass":
          assert isinstance(result, list)
          # assert isinstance(result[0], tuple)
          assert len(result[0]) == image.ndim
          result = xp.asarray(result)
      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 2 for calling the TestStats obj's underlying member method code with example usage: obj.test_single_dim(xp, scp, dtype) and returns: result