code: def test_imag_inplace(self, dtype):
      x = cupy.zeros((2, 3), dtype=dtype)
  
      # TODO(kmaehashi) The following line should raise error for real
      # dtypes, but currently ignored silently.
      x.imag[:] = 1
  
      expected = cupy.zeros((2, 3), dtype=dtype) + (
          1j if x.dtype.kind == "c" else 0
      )
      assert cupy.all(x == expected)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 15 for calling the TestRealImag obj's underlying member method code with example usage: obj.test_imag_inplace(dtype) without return types