code: def test_reduce_add(self, xp, dtype):
      x = testing.shaped_random((3, 4), xp=xp, dtype=dtype, seed=0)
      return xp.add.accumulate(x, axis=-1)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestUfuncAccumulate obj's underlying member method code with example usage: obj.test_reduce_add(xp, dtype) and returns: xp