code: def test_ft_sf(self):
      e_true = e_full_true[e_full_true.dsf <= 2.0][["dsf"]]
  
      g = DeepGraph(v)
      g.create_edges_ft(ft_feature=("sf", 2.0))
      e_test = g.e.rename(columns={"ft_r": "dsf"})
  
      assert_frame_equal(
          e_test.sort_index(axis=1), e_true.sort_index(axis=1)
      )
  
imports: import pytest
  import numpy
  import pandas
  from pandas.testing import assert_frame_equal
  from deepgraph import DeepGraph
label_desc: Use image node_id 26 for calling the TestCreateEdges obj's underlying member method code with example usage: obj.test_ft_sf() without return types