code: def test_binary_op_out(self, dtype):
      a1 = cupy.array(numpy.array([0, 1, 2]), dtype=dtype)
      a2 = cupy.array(numpy.array([0, 1, 2]), dtype=dtype)
      outa = cupy.array(numpy.array([0, 1, 2]), dtype=dtype)
      numpy.add(a1, a2, out=outa)
      b1 = a1.get()
      b2 = a2.get()
      outb = numpy.add(b1, b2)
      assert numpy.allclose(outa.get(), outb)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 4 for calling the TestArrayUfunc obj's underlying member method code with example usage: obj.test_binary_op_out(dtype) without return types