code: def test_neg_array(self, xp, dtype):
      a = testing.shaped_arange((2, 3), xp, 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 3 for calling the TestArrayUnaryOp obj's underlying member method code with example usage: obj.test_neg_array(xp, dtype) and returns: operator