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