code: def test_no_warnings_raised(self):
      # Test that no warnings are raised when Networkx graph
      # is converted to Pygraphviz graph and 'pos'
      # attribute is given
      G = nx.Graph()
      G.add_node(0, pos=(0, 0))
      G.add_node(1, pos=(1, 1))
      A = nx.nx_agraph.to_agraph(G)
      with warnings.catch_warnings(record=True) as record:
          A.layout()
      assert len(record) == 0
  
imports: import warnings
  import pytest
  import networkx
  from networkx.utils import edges_equal, graphs_equal, nodes_equal
label_desc: Use image node_id 25 for calling the TestAGraph obj's underlying member method code with example usage: obj.test_no_warnings_raised() without return types