code: def test_reverse_nocopy(self):
      G = nx.DiGraph([(0, 1), (1, 2)])
      R = G.reverse(copy=False)
      assert sorted(R.edges()) == [(1, 0), (2, 1)]
      with pytest.raises(nx.NetworkXError):
          R.remove_edge(1, 0)
  
imports: import pytest
  import networkx
  from networkx.utils import nodes_equal
  from .test_graph import BaseAttrGraphTester, BaseGraphTester
  from .test_graph import TestEdgeSubgraph
  from .test_graph import TestGraph
label_desc: Use image node_id 17 for calling the BaseDiGraphTester obj's underlying member method code with example usage: obj.test_reverse_nocopy() without return types