code: def test_real_complex(self, xp, dtype):
      x = testing.shaped_arange(self.shape, xp, dtype=dtype)
      x_ = x.copy()
      real = xp.real(x_)
      # real returns a view
      assert real.base is x_
      x_ += 1 + 1j
      testing.assert_array_equal(real, x.real + 1)
      return real
  
imports: import itertools
  import warnings
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 6 for calling the TestComplex obj's underlying member method code with example usage: obj.test_real_complex(xp, dtype) and returns: real