code: def test_exceptions(self):
      G = pd.DataFrame(["a"])  # adj
      pytest.raises(nx.NetworkXError, nx.to_networkx_graph, G)
      G = pd.DataFrame(["a", 0.0])  # elist
      pytest.raises(nx.NetworkXError, nx.to_networkx_graph, G)
      df = pd.DataFrame(
          [[1, 1], [1, 0]], dtype=int, index=[1, 2], columns=["a", "b"]
      )
      pytest.raises(nx.NetworkXError, nx.from_pandas_adjacency, df)
  
imports: import pytest
  import networkx
  from networkx.utils import edges_equal, graphs_equal, nodes_equal
label_desc: Use image node_id 2 for calling the TestConvertPandas obj's underlying member method code with example usage: obj.test_exceptions() without return types