code: def test_round_(self, xp, dtype):
      a = testing.shaped_arange((2, 3), xp, dtype)
      with warnings.catch_warnings():
          warnings.simplefilter("ignore")
          return xp.round_(a)
  
imports: import unittest
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 13 for calling the TestRounding obj's underlying member method code with example usage: obj.test_round_(xp, dtype) and returns: xp