code: def test_imag_setter_raise(self, dtype):
      for xp in (numpy, cupy):
          x = testing.shaped_arange((2, 3), xp, dtype)
          with pytest.raises(TypeError):
              x.imag = testing.shaped_reverse_arange((2, 3), xp, dtype)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 13 for calling the TestRealImag obj's underlying member method code with example usage: obj.test_imag_setter_raise(dtype) without return types