code: def test_shapes_1d_vectorvalue(self, xp, scp, test_xs):
      true_poly = xp.poly1d([-3, -1, 4, 9, 8])
      xs = xp.linspace(-1, 10, 10)
      ys = true_poly(xs)
      P = scp.interpolate.BarycentricInterpolator(
          xs, xp.outer(ys, xp.array([1]))
      )
      test_xs = xp.array(test_xs)
      return xp.shape(P(test_xs))
  
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 8 for calling the TestBarycentric obj's underlying member method code with example usage: obj.test_shapes_1d_vectorvalue(xp, scp, test_xs) and returns: xp