code: def test_neg_zerodim(self, xp, dtype):
      a = xp.array(-2).astype(dtype)
      return operator.neg(a)
  
imports: import operator
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 10 for calling the TestArrayUnaryOp obj's underlying member method code with example usage: obj.test_neg_zerodim(xp, dtype) and returns: operator