code: def test_nnz_axis_not_none(self):
      for xp, sp in ((numpy, scipy.sparse), (cupy, sparse)):
          m = self.make(xp, sp, self.dtype)
          with pytest.raises(NotImplementedError):
              m.getnnz(axis=0)
  
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 4 for calling the TestDiaMatrixScipyComparison obj's underlying member method code with example usage: obj.test_nnz_axis_not_none() without return types