code: def test_unicode_keys(self):
      q = "qualité"
      G = nx.Graph()
      G.add_node(1, **{q: q})
      s = node_link_data(G)
      output = json.dumps(s, ensure_ascii=False)
      data = json.loads(output)
      H = node_link_graph(data)
      assert H.nodes[1][q] == q
  
file_path: networkx/networkx/readwrite/json_graph/tests/test_node_link.py
imports: import json
  import pytest
  import networkx
  from networkx.readwrite.json_graph import node_link_data, node_link_graph
label_desc: Use image node_id 8 for calling the TestNodeLink obj's underlying member method code with example usage: obj.test_unicode_keys() without return types