code: def test_bspline_rndm_unity(self, xp, scp, dtype):
      if xp.dtype(dtype).kind == "u":
          pytest.skip()
  
      b = self._make_random_spline(xp, scp)
      b.c = xp.ones_like(b.c)
      xx = xp.linspace(b.t[b.k], b.t[-b.k - 1], 100)
      return b(xx)
  
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 5 for calling the TestBSpline obj's underlying member method code with example usage: obj.test_bspline_rndm_unity(xp, scp, dtype) and returns: b