code: def test_ones(self, xp, dtype, order):
      return xp.ones((2, 3, 4), dtype=dtype, order=order)
  
imports: import numpy
  import pytest
  import warnings
  import cupy
  from cupy import testing
label_desc: Use image node_id 26 for calling the TestBasic obj's underlying member method code with example usage: obj.test_ones(xp, dtype, order) and returns: xp