code: def check_casting_dtype(self, in0_type, in1_type, dtype, casting, xp):
      a = testing.shaped_arange((2, 3), xp, in0_type)
      b = testing.shaped_arange((2, 3), xp, in1_type)
      if casting != "unsafe":
          # may raise TypeError
          return xp.add(a, b, dtype=dtype, casting=casting)
  
      with warnings.catch_warnings(record=True) as ws:
          warnings.simplefilter("always")
          ret = xp.add(a, b, dtype=dtype, casting="unsafe")
      ws = [w.category for w in ws]
      assert all([w == numpy.ComplexWarning for w in ws]), str(ws)
      return ret, xp.array(len(ws))
  
imports: import itertools
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the UfuncTestBase obj's underlying member method code with example usage: obj.check_casting_dtype(in0_type, in1_type, dtype, casting, xp) and returns: ret,  xp, xp