code: def test_add_outer_scalar(self, xp):
      return xp.add.outer(2, 3)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestUfuncOuter obj's underlying member method code with example usage: obj.test_add_outer_scalar(xp) and returns: xp