code: def test_data_input(self):
      G = self.Graph({1: [2], 2: [1]}, name="test")
      assert G.name == "test"
      expected = [(1, {2: {0: {}}}), (2, {1: {0: {}}})]
      assert sorted(G.adj.items()) == expected
  
imports: from collections import UserDict
  import pytest
  import networkx
  from networkx.utils import edges_equal
  from .test_graph import BaseAttrGraphTester
  from .test_graph import TestGraph
label_desc: Use image node_id 2 for calling the TestMultiGraph obj's underlying member method code with example usage: obj.test_data_input() without return types