code: def test_bspline_continuity(self, xp, scp):
      # assert continuity at internal knots
      b = self._make_random_spline(xp, scp)
      t, _, k = b.tck
      return b(t[k + 1 : -k - 1] - 1e-10), b(t[k + 1 : -k - 1] + 1e-10)
  
imports: import pytest
  import inspect
  from cupy import testing
  from cupy_backends.cuda.api import driver
  from cupy_backends.cuda.api import runtime
  import numpy
  import cupyx.scipy.interpolate
label_desc: Use image node_id 9 for calling the TestBSpline obj's underlying member method code with example usage: obj.test_bspline_continuity(xp, scp) and returns: b,  b