code: def test_graph_basics(self):
      (
          G,
          x,
          y,
          edge_x,
          edge_y,
          edge_index,
          graph_x,
          graph_y,
      ) = simple_networkx_graph()
  
      dg = Graph(
          node_feature=x,
          node_label=y,
          edge_index=edge_index,
          edge_feature=edge_x,
          edge_label=edge_y,
          graph_feature=graph_x,
          graph_label=graph_y,
          directed=True,
      )
  
      for item in [
          "directed",
          "node_feature",
          "node_label",
          "edge_feature",
          "edge_label",
          "graph_feature",
          "graph_label",
          "edge_index",
          "edge_label_index",
          "node_label_index",
      ]:
          self.assertEqual(item in dg, True)
      self.assertEqual(len([key for key in dg]), 10)
  
file_path: deepsnap/tests/test_graph_tensor_backend.py
imports: import copy
  import torch
  import unittest
  import numpy
  from tests.utils import simple_networkx_graph
  from deepsnap.graph import Graph
  from torch_geometric.datasets import Planetoid
label_desc: Use image node_id 1 for calling the TestGraphTensorBackend obj's underlying member method code with example usage: obj.test_graph_basics() without return types