code: def test_feature_funcs(self):
      sv_true = self.sv_full_true
  
      sv_test = g.partition_nodes("color", {"time": lambda x: list(x)})
  
      assert_frame_equal(sv_test, sv_true)
  
imports: import pytest
  import numpy
  import pandas
  from pandas.testing import assert_frame_equal
  from numpy.testing import assert_allclose
  from deepgraph import DeepGraph
label_desc: Use image node_id 2 for calling the TestPartitionNodes obj's underlying member method code with example usage: obj.test_feature_funcs() without return types