code: def test_zeros_scalar_none(self, xp, dtype, order):
      with testing.assert_warns(DeprecationWarning):
          return xp.zeros(None, dtype=dtype, order=order)
  
imports: import numpy
  import pytest
  import warnings
  import cupy
  from cupy import testing
label_desc: Use image node_id 21 for calling the TestBasic obj's underlying member method code with example usage: obj.test_zeros_scalar_none(xp, dtype, order) and returns: xp