class_docstr: Unit tests for the :func:`~networkx.graph_atlas_g` function.
class_docstr_tok: ["Unit","tests","for","the",":","func",":","`","~networkx.graph_atlas_g","`","function","."]
code: def test_sizes(self):
      G = self.GAG[0]
      assert G.number_of_nodes() == 0
      assert G.number_of_edges() == 0
  
      G = self.GAG[7]
      assert G.number_of_nodes() == 3
      assert G.number_of_edges() == 3
  
file_path: networkx/networkx/generators/tests/test_atlas.py
imports: from itertools import groupby
  import pytest
  import networkx
  from networkx import graph_atlas, graph_atlas_g
  from networkx.generators.atlas import NUM_GRAPHS
  from networkx.utils import edges_equal, nodes_equal, pairwise
label_desc: Use image node_id 2 for calling the TestAtlasGraphG obj's underlying member method code with example usage: obj.test_sizes() without return types