code: def test_spline_filter(self, xp, scp):
      data = testing.shaped_random(
          (12, 12), xp, xp.float64, scale=1, seed=12457
      )
      data = 10 * (1 - 2 * data)
      return scp.signal.spline_filter(data, 0)
  
imports: import sys
  import unittest
  import pytest
  import cupy
  from cupy import testing
  import cupyx.scipy.signal
  import numpy
label_desc: Use image node_id 2 for calling the TestSplineFilter obj's underlying member method code with example usage: obj.test_spline_filter(xp, scp) and returns: scp