code: def test_step_size(self, step_size):
      e_true = e_full_true.iloc[:, 0:0]
  
      g = DeepGraph(v)
      g.create_edges(step_size=step_size)
      e_test = g.e
  
      assert_frame_equal(e_test, e_true)
  
imports: import pytest
  import numpy
  import pandas
  from pandas.testing import assert_frame_equal
  from deepgraph import DeepGraph
label_desc: Use image node_id 13 for calling the TestCreateEdges obj's underlying member method code with example usage: obj.test_step_size(step_size) without return types