code: def test_require_owndata(self, dtype):
      x = cupy.zeros((2, 3, 4), dtype)
      arr = x.view()
      arr = cupy.require(arr, dtype, ["O"])
      assert arr.flags["OWNDATA"]
  
imports: import unittest
  import pytest
  import numpy
  import cupy
  from cupy import testing
label_desc: Use image node_id 10 for calling the TestKind obj's underlying member method code with example usage: obj.test_require_owndata(dtype) without return types