docstr: Conversion from digraph to sparse matrix to digraph.
docstr_tok: ["Conversion","from","digraph","to","sparse","matrix","to","digraph","."]
code: def test_identity_digraph_matrix(self):
      "Conversion from digraph to sparse matrix to digraph."
      A = nx.to_scipy_sparse_array(self.G2)
      self.identity_conversion(self.G2, A, nx.DiGraph())
  
imports: import pytest
  import networkx
  from networkx.generators.classic import barbell_graph, cycle_graph, path_graph
  from networkx.utils import graphs_equal
label_desc: Use image node_id 7 for calling the TestConvertScipy obj's underlying member method code with example usage: obj.test_identity_digraph_matrix() without return types