code: def test_correctness(self, xp, scp):
      x = xp.asarray([-1, 0, 1, 2, 3, 4])
      # y = xp.asarray([-1, 2, 3])
      y = testing.shaped_random((6, 1), xp)
      s = scp.interpolate.Akima1DInterpolator(x, y)
      return s(x), s(x, 1)
  
imports: import io
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy.cuda import runtime
  from cupy import testing
  import cupyx.scipy.interpolate
  from cupyx.scipy.interpolate import CubicHermiteSpline
label_desc: Use image node_id 1 for calling the TestAkima1D obj's underlying member method code with example usage: obj.test_correctness(xp, scp) and returns: s,  s