code: def test_update_root(self):
      h = [0, 20, 10, 60, 30, 50, 40]
      h_updated = [10, 20, 35, 60, 30, 50, 40]
      q = self._make_mapped_queue(h)
      removed = q.update(0, 35, priority=35)
      assert q.heap == h_updated
  
imports: import pytest
  from networkx.utils.mapped_queue import MappedQueue, _HeapElement
label_desc: Use image node_id 10 for calling the TestMappedDict obj's underlying member method code with example usage: obj.test_update_root() without return types