code: def test_isdense(self):
      assert_equal(sputils.isdense(np.array([1])), True)
      assert_equal(sputils.isdense(matrix([1])), True)
  
file_path: catboost/contrib/python/scipy/py2/scipy/sparse/tests/test_sputils.py
imports: from __future__ import division, print_function, absolute_import
  import numpy
  from numpy.testing import assert_equal
  from pytest import raises
  from scipy.sparse import sputils
  from scipy.sparse.sputils import matrix
  from scipy._lib._numpy_compat import suppress_warnings
label_desc: Use image node_id 8 for calling the TestSparseUtils obj's underlying member method code with example usage: obj.test_isdense() without return types