code: def test_conj(self, xp, sp):
      n = _make_complex(xp, sp, self.dtype)
      cupy.testing.assert_array_equal(n.conj().data, n.data.conj())
  
imports: import pickle
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy.cuda import driver
  from cupy.cuda import runtime
  from cupyx.scipy import sparse
label_desc: Use image node_id 11 for calling the TestDiaMatrixInit obj's underlying member method code with example usage: obj.test_conj(xp, sp) without return types