code: def test_diag2(self, xp):
      a = testing.shaped_arange((3, 3), xp)
      return xp.diag(a, 1)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestMatrix obj's underlying member method code with example usage: obj.test_diag2(xp) and returns: xp