code: def check_zerodim_op(self, op, xp, dtype):
      a = xp.array(-2).astype(dtype)
      return op(a)
  
imports: import operator
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 8 for calling the TestArrayUnaryOp obj's underlying member method code with example usage: obj.check_zerodim_op(op, xp, dtype) and returns: op