code: def test_copy(self, xp):
      a = testing.shaped_arange((2, 3, 4), xp)
      o = a.flat.copy()
      assert a is not o
      return a.flat.copy()
  
imports: import unittest
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 5 for calling the TestFlatiter obj's underlying member method code with example usage: obj.test_copy(xp) and returns: a